How to Choose a Contractor for Commercial Roof Repair

If installed and maintained properly, a commercial roof should last you decades. But to ensure that it does, you must select your roofing contractor carefully. Given that a commercial roof is a relatively large investment, it’s best to spend your time and energy researching which contractors are right for the job. We promise it will save you from a costly headache later on.

Interstate Roofing has been helping clients with their roof repair needs for more than three decades. We know what it takes to get and keep a satisfied customer. We also know what to look for in a qualified contractor. Here are a few of our top tips for selecting a contractor for your commercial roof repair needs.

Get Feedback

A good place to start when looking to hire someone for just about anything is with your friends and family. Do you have any relatives or know any fellow business owners who recently had roof repair work done? If so, ask them who they used and how satisfied they were with the contractor’s work.

Can’t think of anyone who has hired someone for commercial roof repair recently? You can always turn to social media and post the question there. If you’re unable to find someone you personally know to make a recommendation, you can still solicit feedback about contractors in your area through online reviews.

Some of Interstate Roofing’s reviews and testimonials are posted directly on our site. These testimonials come from customers and companies we have worked with in the past and provide good insight into how our client base feels about our work. You can also go to sites like Facebook, Google, and Yelp to see what others have to say about us and any other contractors you are considering.

Verify Credentials

Once you find some roofing contractors with solid reviews, you should check each company’s credentials to make sure that it is properly licensed. There are many people who pose as experienced contractors when they don’t actually have valid credentials. So always be cautious when someone approaches you offering to perform work you haven’t requested. Instead, do your own research and make sure you are selecting the best person for the job.

Any legitimate roofing contractor in the Portland area will be properly licensed because Oregon law requires it. Anyone can say a company is licensed so never simply take someone’s word for it. Instead, be sure to look into it for yourself.

The Oregon Construction Contractors Board (Oregon CCB) and the Washington State Department of Labor and Industries provide online resources for you to verify licensing information. Most states do, so if you reside outside the Pacific Northwest, find an equivalent resource in your state to check for this information.

You can find Interstate Roofing’s license number at the bottom of our webpage, but any licensed contractor should be able to provide this for you upon request. Using the search option on the Oregon CCB website, we can plug in a license number and hit search to confirm the company’s license is active. Once you get to the result page, you can hit Choose Option on the left-hand side to pull up more detailed information about the company. You can also confirm this information using the verify tool on the Washington State Department of Labor and Industries webpage.

Check for Consumer Complaints

Once you have verified that the contractor is properly licensed, you should look into the company’s background to find out if there has been a history of consumer complaints. To do this, start with the resource used to verify the contractor’s licensing information. Once you pull up a more detailed company history on the Oregon CCB website, you can check for the company’s complaint and disciplinary history for the last 10 years. If a company does have consumer complaints, you want to see that the contractor has taken action to address them appropriately.

In addition to checking with the board that maintains licensing information, you can also check resources like your State Attorney General Office, State Department of Justice, or the Better Business Bureau to find out whether the company is in good standing. A search of Interstate Roofing on the Better Business Bureau webpage, for example, shows that we have an A+ rating with the BBB, a five-star customer rating, and zero consumer complaints.

Compare Costs

Although it can be tempting to go with the contractor who offers you the lowest bid, you should compare costs in other respects as well. For instance, if a contractor is coming in with a bid much lower than other contractors you have spoken with, ask yourself why. It could be a red flag that something isn’t quite right.

You want to look for a company that’s offering a competitive price while also having the know-how and experience to deliver quality work. So compare prices and be wary about anyone who offers a bid that’s way under what other contractors are offering. To request a free estimate from Interstate Roofing, follow the link here.

Once you have checked credentials, researched customer reviews and complaints, and compared prices, prepare a list of your top contractor choices. Meet them in person to discuss your commercial roof repair project. First impressions and your gut feeling can also go a long way in helping you make the right decision.

If you’re based in the Pacific Northwest and have a commercial roof repair need that you would like us to help you out with, give us a call. Interstate Roofing has been in business for more than 30 years because we know how to deliver quality work and customer service. Allow us to show you exactly how we’ve built our name and reputation.


What Services to Expect from Commercial Roofers Near You

Roofs are something that many people may not pay close enough attention to until it’s too late. Don’t let that happen with your commercial property. Whether you own one property or multiple, and no matter if they’re large or small, it’s necessary to have a commercial roofer on hand. You will, of course, want to find a trusted, licensed contractor who performs a number of different services. You may be wondering, what exactly are the types of services I would get from a commercial roofer near me? Read on below to find out.

Commercial roofing requires particular skills and knowledge. The roofs of these buildings are different than those of residential properties. At Interstate Roofing, we have plenty of experience and expertise specific to the flat or low-slope roofs found on most commercial properties. We also have a portfolio of some past work examples on our website.

Commercial roofers are experienced with different types of commercial properties as well, from warehouses to offices to factories. No matter how large or small your property is, the roofing technicians will be equipped to handle it. This also extends to knowledge of different types of roofing materials and which suits an individual property best. When choosing a commercial roofer near you, also make sure they employ skilled, experienced technicians. That will pay off with all of the following services.


To start, contact a commercial roofer near you to do a regular inspection. The inspections will be thorough and let you know if there are warning signs of water damage or other problems. Don’t put an inspection off because you assume there’s nothing wrong. Your roof may have a small leak that has gone undetected but has already cost you money and will only get worse.

Contractors and technicians are specifically trained to notice the kind of issues that could lead to big, costly problems down the line. By taking care of them now, you can avoid more complex repairs that might require the business to be temporarily shut down. An inspection is also helpful if you suspect there may be an issue but are not sure what it is or how to handle it.

Even if all appears to be well, regular observation should still be kept up over time. And if there is something, the commercial roofer will then discuss options with you. Due to their own experience and expertise, they’ll be able to recommend the best solution and break it down for you to fully understand.


Interstate Roofing’s well-trained technicians come to you with plenty of experience. This means they’re able to quickly and easily spot problems in the commercial roof that need to be repaired. And they will usually know exactly how to fix it. And how to do so as efficiently, quickly, and affordable as possible. This is true no matter the size of the issue, from small leaks to more extensive damage.

Preventative Maintenance and Cleaning

Regular maintenance is key to keeping the roof in good condition for as long as possible. Technicians will provide maintenance according to the requirements of industry standards, manufacturer warranties, and their own workmanship warranties. Depending on the materials, roofs should be able to last for years. The more you can extend the life of your roof the better, in order to put off needing a new one for as long as possible.

Maintenance also helps the roof look its best. This is also a benefit of regular cleaning. Cleaning services available include pressure washing and gutter cleaning.

Installation and Replacement

Sometimes, unfortunately, commercial roofs have such extensive damage that they’re beyond any repairs. Thankfully, a commercial roofer near you will also be able to provide roof replacement and installation services.

If you’re unhappy with the current roof, you don’t necessarily need to wait for extensive damage to occur before you get rid of it. You can also ask about installing a roof for aesthetic value or for a better and more efficient option.

Interstate Roofing technicians know the best ways to install different types of roofs and how styles and sizes of buildings affect matters. And they’re experts in roofing materials. You’ll have thorough discussions concerning the different options, their benefits, and their downsides. And we’ll answer whatever questions or concerns you have. We’re here to guide you through the process so you can be well-informed enough to make the best choice.

For commercial roofs, popular choices include metal roofing, PVC, and TPO (thermoplastic polyolefin). No matter which you ultimately choose, you can trust that the technicians will only use trusted, quality, durable materials.

Energy Efficient Solutions and Services

Interstate Roofing is a Trade Ally of the Energy Trust of Oregon. If you’re interested in more energy-saving options for your commercial properties, this is something you can discuss with us. This includes certain money-saving initiatives like insulation.

Emergency Services

You never know when a problem will occur that needs to be addressed immediately. That’s why Interstate Roofing is able to be reached 24 hours a day, any day of the year. You can find the number to contact in case of an emergency on our website.

At Interstate Roofing, we take pride in our notable certifications. We have earned the GAF Master Elite and Master Select designations, the highest status from the largest roofing manufacturer in the country. We have also earned the Triple Excellence Award for three years in a row. This award recognizes the high quality of our work as well as the training and education our technicians receive. These aren’t the only awards we have won either. You can find more information about that on our website. With these honors, you can be confident that we’ll provide the best possible services for your commercial roof.

You can find out more information on Interstate Roofing on our website. You’ll find more about our services, contact information, collections of photos of past work, and customer testimonials. We look forward to becoming the go-to commercial roofer near you.

5 Benefits of Working with a Commercial Roofing Expert

Have you ever thought you could complete a roofing task on your own? You have a ladder and a few tools, so maybe you could head up there yourself and get the job done. But be warned: experts don’t recommend it. There are plenty of reasons why you should hire a commercial roofing expert instead of risking it yourself. And we want to tell you about them.

Not only will a commercial roofing expert do a great job for you, but you’ll love to hear that they can make the whole process much easier for you. Whether it’s dry rot repair, gutter needs, or residential and commercial roofing, Interstate Roofing has the professional staff and experience to get you the results you’re looking for. Here are five benefits to working with a commercial roofing expert.

It’s Safer

Roofing can be a dangerous task, even if you have some experience doing it. According to OSHA, falls are the leading cause of fatalities in construction, accounting for about one-third of industry fatalities. And those statistics are only counting the professionals attempting the task, meaning, if you’re untrained, your likelihood of sustaining an injury is even greater.

The last thing you’d want is to sustain an injury while attempting to fix a roof on your own. Aside from becoming injured by falling, you could also injure yourself with tools you’re not experienced in using. But those aren’t the only ways you can sustain an injury while fixing your roof; electrocution and burns are also possibilities. Want to know a great way to avoid any risk of potential injury? Leave all the roofing activities to the professionals.

Experts are trained to know how to best avoid these safety risks. They’re taught how to use the tools and materials properly, on the ground and on the roof. And when these experts are working for a professional commercial roofing company, like Interstate Roofing, they’re insured in case any injuries do occur. Along with being trained to use the right tools, they also have the proper safety gear required by OSHA to do that kind of construction work.

It Can Save You Money and Time

One way a commercial roofing expert is able to save you money while completing a roofing job is that they can be cost-effective is by the quality of their work. More often than not, if you fix something on your own, you could lose peace of mind by wondering if you did it correctly. Having to fix a problem a second time on your own or having to call in a professional after you’ve spent your time and money on materials and tools yourself will end up costing you much more down the line, as well as taking up more time. Experts get the job done right the first time, are faster, and are in possession of the necessary tools.

They Offer Warranty Options

When you work with a commercial roofing expert, you don’t have to question if the work will hold up. Aside from being trustworthy workers with years of experience, commercial roofing companies also have warranties to back up their work. Experts will provide you with manufacturer warranties for the materials they’re using, but they also have a warranty on the labor being completed.

Because of these warranties, you don’t have to worry about something happening to your roof right after they leave. Warranties remove the risk of having to spend extra money on a bad product or incorrect job. If you’re looking for peace of mind for your roofing job, you should probably get yourself a roofing expert.

They Can Fix Problems You Don’t Know You Have

Some roof fixes aren’t as simple as just patching up a hole. And doing it yourself could end up causing more harm than good. Commercial roofing experts are both licensed and trained to complete the difficult tasks associated with roofing. Aside from that, they have completed these tasks many times. Plus, they’re familiar with the tools, materials, services, and things you won’t be able to catch on your own.

When you hire a professional, you know that they’re going to fix the problem accurately, and in a way, they can also prevent a future problem from happening any time soon. An expert can repair your roof and catch issues even before there are apparent signs of it. For over 30 years, Interstate Roofing has been servicing the Portland, Oregon, area. You can’t gain roofing expertise without the hands-on experience our team has. Knowing the ins and outs of roofing from experience is what sets commercial roofing experts apart.

You Can Set Up Regular Maintenance Programs

If you want to protect your roof and gutters for a long time, you’ll benefit from the maintenance programs that commercial roofing experts offer. Keeping up with regular maintenance for your roof can help prevent bigger issues from happening at inconvenient times. This type of preventative maintenance can prolong the life of your roof, as well as maintain the requirements of the manufacturer’s warranty. Instead of fixing preexisting issues, you’ll be taking concrete action to prevent issues in the future with programs like this.

When you have a maintenance agreement with Interstate Roofing, you ensure your roof will continue looking its best. Youll also have access to priority services if there is ever a leak and maintain Interstate’s workmanship warranty. While keeping up with industry standards, a professional roofing contractor will check your roof regularly when you’re a maintenance agreement customer.

The benefits of working with a commercial roofing expert are substantial. If you take advantage of them, your roof can live up to its full potential. With a variety of services available, Interstate Roofing has the experts to perform all of your roofing needs.

Low Roof Pitch Options for Your Building

A roof has a “low pitch” if it slopes anywhere from 2/12 to 4/12 inches—meaning that for every foot the roof extends horizontally, the level of the roof rises two to four vertical inches. Some roofs have extremely low slopes and appear to be nearly flat. No roof, of course, should actually be completely flat. If it is, puddles of water will accumulate on the roof and ultimately damage it.

Low-slope roofs are seen on both commercial and residential buildings, although they are primarily associated with businesses. There is a reason for this: in commercial buildings, it is generally considered more prudent to maximize the use of space, leading to a flatter roof. Residential homes, on the other hand, tend to have a much steeper incline for cosmetic reasons.

Regardless of whether you’re looking for low roof pitch options for your home or your place of business, you’ll need to consider what materials are best. In this article, we’ll take a look at the choices available to you and other variables to consider when putting in a roof.

The Trouble with Low Roof Pitch

The primary advantage of a low roof pitch is maximizing space. It will allow you to utilize the space in your area all the way up to the top. This can create a number of advantages. Heating and cooling are easier in a building with a flatter roof, for example. However, low-slope roofs come with disadvantages that don’t trouble steeper roofs. The primary problem with a low slope has to do with drainage: water damages roofs, and water can begin to pool on a roof with too low of a slope. Ice and snow can also be a problem, depending on the climate. If water accumulates on your roof and can’t drain properly, it will eventually cause decay.

Direct sunlight can be another problem for a low-pitch roof, although this is certainly not an issue unique to these types of roofs. In fact, ultraviolet light can do a number on any type of roof, unless the proper materials are used.

This brings us to the primary disadvantage of a low slope roof: you are somewhat limited in the materials you can use to construct them. This is because of the importance of waterproofing. On a roof with a higher pitch, water will easily roll off, and that means you don’t need to concern yourself as much with waterproof materials. A low-pitch roof, on the other hand, absolutely must be waterproofed.


Low-pitch roofs are usually waterproofed through the use of a roof membrane, which can be made from synthetic rubber, a thermoplastic such as PVC, or modified bitumen. Any of these materials can effectively carry water off the roof without allowing it to pool anywhere or penetrate vulnerable areas and cause damage. Occasionally, asphalt roofing systems are also still in use, and while these types of roofs were extremely common in the past, they’ve largely been supplanted by synthetic membranes. This is because asphalt roofs don’t seal as effectively as other membranes do.

Types of Low-Pitch Roofs

There are several options when having a low-pitch roof installed for your building. These options, however, are more limited than those for a gable roof or other higher-pitch roof. Even so, there are several choices you can make as far as the construction of your roof, each with its own set of pros and cons.


Asphalt shingles are, as their name suggests, shingles made from asphalt and layered on your roof over felt, a synthetic underlayment, or thicker “ice and water shield”–type membrane. Shingles can be a controversial option for a low-slope roof. Most manufacturers allow shingles on slopes of 2/12 and greater, but most roofing contractors insist on greater slopes, as shingles aren’t “waterproof” but water shedding. Shingles are popular primarily because of their relatively low cost, ease of installation, and aesthetic benefits. However, installing shingles on a low-slope roof might be asking for problems. Consult a professional roofing contractor with many years of experience.

Single-Ply Membranes

Unlike with other roofing systems, where the material is built up over the membrane or layered on top of other materials, single-ply membranes are installed without the help of other layers. A thermoset or thermoplastic membrane is laid across the surface of the roof (generally over rigid insulation) and hot-air welded together. The most popular materials for single-ply membranes are PVC and TPO, which are usually reinforced with the addition of polyester or fiberglass. Single-ply membranes are a great, relatively inexpensive option that’s easy to install. However, because they’re only one layer, maintenance is critical.

Torch Down Roofing

This roofing system is made from sheets of modified bitumen—a hydrocarbon-based material—which is then sealed to the surface of the roof through the use of a handheld propane torch. The seams of the bitumen will melt and fuse together as a result of the welding process, creating seams that are completely waterproof.

This roofing material is great if you live in a particularly harsh climate. While other materials may expand or contract if the weather is hot or cold, modified bitumen will not. This material also has a long life span and is easy to repair, though it can be extremely difficult to install due to the use of the torch. As most of the roof decks in the Pacific Northwest are made of wood, the risk of fire should be a significant consideration. Only use a contractor with the CERTA certification.

Coated Roofs

For commercial buildings, one of the other popular low-pitch roof options is coated metal. Metal roofs aren’t waterproof in and of themselves, but they can be treated with a coating that makes them so. This coating helps reduce the instances of rust, increasing the life span of the roof. Generally, the coating that’s applied is a fluoropolymer paint, which allows the metal roof to become resistant to water and ultraviolet radiation. This option, of course, isn’t practical for commercial buildings that don’t have metal roofs.

If you’d like to discuss roofing options for your building, contact the professionals at Interstate Roofing. We’ve been serving Pacific Northwest for over 20 years and are always ready to share our expertise.

5 Things to Know About Commercial Flat Roof Repair

Whether or not you have experience with roofing projects, you’re probably aware that the flat roof of a commercial building must be handled differently than other types of roofs. It’s precisely because the roofs of most commercial buildings are flat that they have different needs, in maintenance, care, and of course, repair. While in some cases, it can be easier to deal with a commercial roof, in others, it can be significantly more challenging. Here are five of the most important things you should know before beginning any commercial flat roof repair:

Understand Why Your Roof Is Flat

Many people don’t give any consideration to why commercial buildings usually have flat roofs, but have you ever thought about it? What benefits does a flat roof provide to the owner of a building? Why do almost all commercial buildings make use of them, from grocery stores to factories to hospitals? While the majority of residential buildings have sloped roofing.

As you may suspect, the primary reason is cost-effectiveness, however, there is a lot more to it. Building a sloped roof requires a lot more materials, which can be an unnecessary expenditure when your building is required to be practical but not flashy. There’s also another practical reason for commercial buildings to have flat roofs: in many municipalities, there are height restrictions on buildings. You can maximize the space available to you if you simply keep your roof flat. There’s an aesthetic element to all of this as well: try to picture your local grocery store trying to pull off a sloped roof!

It should be noted that a flat roof is never completely flat. There always has to be at least a slight slant to it to allow for proper water drainage.

Know the Different Types of Commercial Flat Roofs

When you’re constructing a commercial building, it’s not as simple as just ordering a “commercial flat roof.” Actually, there are several types of flat roofs that you can consider. Which one you choose depends on your budget and requirements, but no matter which, you’ll have to consider things like drainage and UV protection. Here are a few of the options available to you:

Built-Up Roof System (BUR)

Also known as the “tar and gravel” roof by some, the built-up roof system was one of the most common types of commercial flat roofs for decades. This particular style of roof is one of the oldest types of roofing still in common use, and its continued popularity speaks to its effectiveness and durability. The name “built-up roof” comes from the fact that this type of roof is literally “built up” out of layers of tar and asphalt paper. The layers of roofing material are then reinforced with fiberglass matting. Finally, another thin layer of tar is added to the top of the roof, which is then covered by a layer of aggregate stone.

Advantages of this particular roofing system include durability—these types of roof can last for up to 50 years with proper maintenance—but the chief disadvantage is cost and fumes. Because it requires many hours of labor, this is one of the most expensive flat commercial roofing systems to install.

Metal Panel Roof System

If you’re looking to save on costs, a metal panel roof system may be the choice you should make. It is very simple in its design: metal panels with a special sealant between the joints and a neoprene seal anywhere there are washers in place. These roofs are cheap and have a relatively short lifespan, and so they are usually only used for warehouses and factories.

Single Ply

A relatively new product to the industry, single ply has quickly become one of the most popular choices. The synthetic membrane is applied in a single layer, is flexible and lightweight, and is UV resistant. Single-ply roofing is fairly economical to install, depending on the type of membrane used and preparation needed. It has a comparable lifespan, depending on millimeter thickness used.

Understand Your Warranty

Most commercial roofs are under some type of warranty after they’re constructed. Your warranty can last anywhere from 5 years all the way up to 20 years. If your roof is still under warranty, you won’t have to worry about repair for most minor issues: it will be covered. Other, larger issues, and certain unusual circumstances, may not be covered. If you are in an older building, it may also not be covered. Do some research on, and try to understand, the warranty that covers your roof (if you have one).

Fixing Minor Issues

Now that you have some awareness of different types—and the purpose—of commercial flat roofs, let’s discuss some of the more common minor issues. Both residential and commercial roofs are prone to leaks, and even the most sophisticated roofing technology occasionally requires repair. In some cases, you’ll be able to fix problems yourself. Under most circumstances, however, you’ll want to seek out the services of a qualified professional.

One common example of a problem with a commercial flat roof is a leak. If you have noticed a leak in the roof of your building, the first thing you must do is locate it. Doing so can be relatively easy, or difficult, depending on where the leak is located. Try to tape off an area about two feet around in either direction from where the dripping is coming from. Once you have done that, you can search the roof for any signs of damage. Occasionally, you’ll easily find an obvious hole. However, more commonly, you’ll need to call a professional to help locate the leak for you. Contact a professional at Interstate Roofing if you are having trouble finding the source of your leak.

Finding a Qualified Professional Roofer

With most elements of commercial flat roof repair, you’ll need to find a competent professional to do the job for you. Finding one involves a fair amount of research. While there are many roof service professionals out there, choosing the right one involves a little homework. Read online reviews, check references, and talk to other satisfied customers. You will also want to check what, if any, certifications your prospective roofer has.

If you are in the Portland area, Interstate Roofing is your best option. They have earned the highest possible certification level from GAF, which is the largest roofing manufacturer in North America. This status, combined with their other awards and years of experience, make them a top choice for commercial flat roof repair in and around Portland, Oregon.

5 Questions to Ask When Looking for Commercial Roofing in Vancouver, WA

When it comes to commercial roofing, you don’t want to skimp. A sturdy roof is one of the most important aspects of any building, and especially of one that is being used by a wide array of people. Because of this, it’s important to hire a roofing company that knows what it is doing.

Commercial roofing takes a specialized skill set, and you must ensure the company you’re hiring encompasses all of these skills. Additionally, if you’re looking for commercial roofing in Vancouver, WA, particularly, you want to make sure that the company you choose knows the area and has experience working in it.

It is important to be assured of certain things before you commit to a particular company. Here are five questions to ask when looking for commercial roofing in Vancouver, WA.

Are you licensed and insured?

This may seem like common sense, but it’s important to ask. In Washington State, all general and specialty contractors must register with the Department of Labor & Industries. You don’t want to commit to a roofing company only to find out that they aren’t registered, as this could get you into trouble with the state. For further confirmation, ask for proof of the license.

In terms of being insured, this is also something you need to ask for proof of. Be sure to ask what type of insurance the contractor has. You want a company that has both workers’ comp and general liability insurance. If an employee is injured on your property, you don’t want to be liable for the medical bills.

Furthermore, if any damage happens to your property while the work is being done, you don’t want to be liable for that either. So it’s important to be sure the company has general liability insurance. Accidents happen, and it’s important to confirm that the roofing company you are in talks with has the proper protection.

What types of commercial roofs have you worked on previously?

Not all roofs are the same. For instance, the roof on an office building is not the same as the roof found on a church. Working on a roof that is low-sloped can involve a different skill set than working on a roof that is steep. Because of this, it’s important to choose a contractor who has experience working on the type of roof that is found on your property. This will help ensure you’re getting the best quality work possible on your roof, in turn, giving you better, longer lasting results.

At Interstate Roofing, we know how important this is. We have been replacing the roofs on churches, office buildings, medical complexes, restaurants, warehouses, and multi-family structures since 1988. We are the commercial roofing experts in Vancouver, WA, and we have the skills and expertise to protect your commercial property.

What is your projected timeline?

In terms of logistics and your budget (assuming there is one), it’s important to know how long repairs or installation of a new roof will take. Work being done on the roof will have at least some disruptive effect on your everyday business practices. If you can’t operate your normal business because of the roof repair, you will obviously need to know how many days you’ll be closed so you can alert employees, customers, clients, or residents accordingly.

It’s also important to make sure you aren’t liable for any extra costs if the timeline goes beyond the expected end date. Furthermore, ask about potential weather delays and how that might impact the timeline. A roofing company with experience will account for weather delays when providing you with their timeline.

In case of bad weather, what do you do?

It’s no secret that it rains in Washington, which is why asking how a roofing company handles this is critical. You don’t want a company that doesn’t properly shield its work from the rain, resulting in even more damage to your business.

Ask the contractor if they use plastic sheeting or tarpaulin to protect the roof in bad weather. If the answer is no, ask what other weather-proof materials they plan to use to keep your property safe while they’re working on the roof.

Additionally, be sure to ask about the contractor’s plan if there’s rain for consecutive days and/or if there are high winds. Will the contractor regularly check your property to ensure the protective covering is working and that everything is dry? Make sure you know from the get-go whether this is something you’ll be responsible for.

What is the warranty on the new roof?

We understand that you’re doing roof work now in hopes of not having to do further work for a while. If you hire a professional, experienced roofing company that does high-quality work, this should be the case, barring damage caused by an extreme storm or natural disaster.

However, as we all know, accidents happen, and nothing is perfect. Because of this, obtaining a warranty on the work done is important. If something does happen and repair is necessary, you don’t want to have to pay another large amount to get it fixed.

It’s important to choose a commercial roofing company that you can trust. Finding one with both experience with the type of roof on your commercial property and experience working in the Vancouver, WA, area helps ensure you’re getting the best possible service done.

At Interstate Roofing, we’re proud to have the skill sets needed for many diverse roofs, as well as knowledge of the Vancouver area. We’re happy to chat more about your specific roof and provide you with a free estimate. Please reach out to us so we can make sure the roof on your commercial property is top notch!

When Should You Reach Out to a Commercial Roofing Specialist

Let’s admit it; there are times when we all feel like the roof is caving in around us. Sometimes it’s because we’re a little stressed. But other times it’s because the roof is literally about to fall! Don’t let it get to that point, though. There are things you can look out for and signals that your roof is sending you to help you know when it’s time to call a commercial roofing specialist.

Here are some common examples of when it’s time to call in the experts.


You should certainly call a commercial roofing specialist when you need a commercial roof installed. This isn’t something you should tackle as a do-it-yourself project. Instead, hire a trusted contractor to do the work. A lot of commercial roof problems are caused by improper installation. A sealant problem, for instance, could cause water to seep into your building. But just as some issues are caused by improper installation, many problems can also be prevented when a skilled contractor performs the installation work.

How do you know which contractor to hire when looking for a commercial roofing specialist? Look for companies that are experienced in the field and have built themselves a solid reputation. Interstate Roofing has been in business for three decades. We have an A+ rating with the Better Business Bureau and our customers rave about us. You’ll want your commercial roofing specialist to be able to say the same.

Roof Replacement

Just as you should call a commercial roofing specialist to properly install your roof, you’ll also want to contact a commercial roofing specialist when your roof reaches the end of its lifespan. It’s incredibly important that as a roof ages you have your roofing specialist perform regular maintenance.

Getting an expert opinion is also imperative as a roof ages because a professional will be able to assess when a roof is beyond repair and it’s time for a replacement. Seemingly minor issues that go unaddressed can lead to bigger problems down the line, potentially wreaking havoc on your entire commercial building. Keep reading to learn more about common commercial roofing problems that are signs it’s time to call in an expert.

Poor Drainage

Without proper drainage, moisture from rain and snow will have nowhere to go and will eventually accumulate on the surface of your roof. Anytime you have standing water on your roof, you’re almost guaranteed to have a problem.

Water weighs about five pounds per inch, per square foot. That means the extra weight of the water will cause undue stress to your roof, causing it to sag or even collapse. But there’s no reason it should get to that point.

Make sure you have a proper drainage system in place. If you don’t, contact your commercial roofing specialist immediately to have it fixed. And always be on the lookout for any water that’s pooling on the surface. This a clear sign that you need to contact your commercial roofing specialist.

Puncture Holes

Weather and environmental factors can cause significant harm to a roof, which is why it’s important that your roof is regularly inspected for any visible signs of damage. Puncture holes can be caused by severe weather, such as hail or high winds, but can also be caused by foot traffic. A careless technician working on your roof, for example, or wild animals can also cause puncture holes.

Flat roofs are more prone to puncture holes than sloping roofs, but there are certain things you can do to prevent this. For instance, since debris, such as branches, may cause puncture holes, be sure to trim back any tree limbs. Also, make sure to thoroughly vet anyone who will need to access your roof to perform work. You can also install walkway pads to protect your roof from foot traffic.

If you notice any puncture holes, contact a commercial roofing specialist to address the problem since these holes can cause leaks and decrease the overall efficiency of your roof.

Flashing Issues

Flashing is the material, typically steel or another type of metal, that’s used in certain areas of your roof, such as the valleys and base of chimneys, to keep water from seeping in. When your flashing is faulty, it can cause leaks and lead to other types of issues. Extreme weather is a common cause of deterioration. Scorching temperatures, for instance, can cause your roof to expand and contract, altering the shape of your flashing.

It’s important then to inspect your flashing from time to time to make sure there are no signs of wear and tear. If you do notice something amiss, contact your commercial roofing specialist. Flashing issues are relatively common and can often be easily fixed.


Like many other commercial roof problems, blow-offs are caused by extreme weather, specifically high winds which can cause the roof to uplift. The corners and edges of the roof are particularly susceptible to the pressure of high winds. Though the damage may initially be minor, over time, high winds will cause the roof to continue to rise and even potentially blow-off. That’s why it’s important to inspect your roof after extreme weather conditions and contact a commercial roofing specialist if you notice any issues.

A commercial roof requires special expertise. Attempting to perform the work yourself or hiring an inexperienced contractor could lead to much bigger problems. That’s why you should only allow trusted commercial roofing specialists to perform maintenance and repair work.

At Interstate Roofing, we have been working on the roofs of all types of commercial buildings for the past three decades. We have the requisite skill and expertise to address any commercial roofing issues you have and want to make sure you keep a roof over your head. Contact us as we know exactly how to do that.

Boosting Business With Quality Roof Design

How professional roof installation can benefit your company.

Did you know that the roof on your commercial property can have a direct impact on business? Your roof represents a large part of the external area of your business and is one of the first things that customers are going to see when they pull up. Choosing quality roof design and professional installation results in a finished product with a host of benefits.

Makes Better First Impressions

Example of our commercial roof installationA roof that’s sagging, cracking, or just plain falling down doesn’t belong on a building that houses a vibrant, growing business. While you can’t stop customers from judging the quality of your products and services by the appearance of your establishment, you can invest in a roof that makes a good impression. A sturdy material with an appealing design serves to attract customers as they’re driving or walking by.

Improves Value

Just like houses, business locations have “curb appeal.” The same clean, new appearance that brings customers in can work in your favor to improve the value of your business property. If you plan on staying in the same location for the long haul, a new or updated roof will help pay for itself because of the value increase to your property.

Keeps Inventory Safe

Whether you’re running a store, repair shop, or restaurant, you’ve put a significant amount of money into your equipment and inventory. The last thing you need is an unreliable roof causing problems. Strong commercial roofing materials protect your assets from the pitfalls of roof damage such as leaks and pest infestations.

Prevents Future Problems

An aging roof could be hiding all sorts of potential issues, such as detached shingles, a rotting deck, leaks, and mold. Professional repair or replacement takes care of all these problems with a single investment that prevents the need for a series of costly repairs in the future.

Saves Time and Lasts for Years

Running a business doesn’t leave you time to deal with a bunch of DIY roof repairs. Choosing professional roof installation for your company puts the job in the hands of contractors who know exactly how to handle the job so it’s done right the first time and will last long into the future.

Enjoy better business performance today with the commercial roofing services from Interstate Roofing. We serve the Portland area with highly qualified sales and production staff members who are equipped to handle all manner of roofing jobs. Contact us today for a free estimate to get the ball rolling on this beneficial business makeover.