Pros and Cons of Different Commercial Roofing Types

Hibu Websites • February 25, 2022

The roof is one of the most important structures of a commercial building. The type of roof you have over your commercial building plays a huge role in your overall costs. A good roof will shield the underlying structures of the building from the elements and help to reduce your energy costs.If you are in the market for new commercial roofing, you want to be sure of selecting a product that will deliver the maximum ROI on your investment. St Louis Management came up with a list of the different types of commercial roofing, along with their pros and cons, which will give you what you need to choose the best roof for your building.

Types of commercial roofing

1.  Spray Polyurethane Foam (SPF)

Spray polyurethane foam (SPF) roofing consists of a special foam product with an elastomeric coating. The components are combined in liquid form inside a spray gun and applied to a prepared surface. The mixture hardens into a rigid foam plastic in seconds, expanding to several times its original volume. SPF roofs are quickly becoming the go-to roof for commercial buildings.


Pros

·     SPF is easy to install

The roof can be installed without any need to interrupt the operations of the businesses in a building.

·     SPF is adaptable and versatile

Because it is applied in a liquid state, it takes the shape of the surface and quickly bonds to it. It can be applied on an existing roof such as asphalt, shingles, concrete, metal, or wood.

·     It is energy-efficient

SPF roofs create a thermal, air, and moisture barrier which keeps heat out in summer and reduces heat loss in winter.

·     Ease of maintenance

Apart from biannual inspections, the roof requires almost no maintenance.

·     Not vulnerable to leaks

SPF roofs have no seams or penetrations – the primary causes of roof leaks – so they are not prone to leaks.

·     Saves money

With an SPF roof, there is no need for a costly roof tear-off or disposing of the resulting waste.

 Cons

·     Requires a skilled installer

Installing an SPF roof does not need a large crew, but the installer must have a high degree of technical knowledge. Installers must be certified.

·     Narrow installation window

SPF roofs need a precise set of weather conditions to be installed properly.

·     Possibility of over spray

During application, there is a risk that the wind will carry the spray onto surfaces where it is not needed.

·     Maintenance

SPF roofs must be inspected at least twice a year and after every potentially damaging event.

2.  Thermoplastic Polyolefin (TPO)

 A Thermoplastic Polyolefin (TPO) roof is made from a smooth, flexible, single-ply polymer, or filler blend that is glued down or attached using some mechanical means.

Pros

·     Economical

It saves money because it is easy to install.

·     Energy-efficient

Because the material reflects the sun’s UV rays, it can help lower energy bills.

·     Tough

TPO roofing is resistant to chemical weathering, mold and mildew, corrosion, and buildup of dirt.

·     Flexible:

It lends itself to easy shaping.

Cons

·     Vulnerable lamination

TPO roofs come with lamination which can start to shrink and crack with time.

·     Prone to leak

TPO roofs need a large number of seams to stay in place and this makes them vulnerable to leaks.


3.  Ethylene Propylene Diene Terpolymer (EPDM)

Ethylene Propylene Diene Terpolymer (EPDM) or “rubber roof” consists of a combination of ethylene and propylene, which creates a highly durable black or white rubber membrane.


Pros

·     Affordable

Installation and maintenance don’t cost much.

·     Tough

It is resistant to hail damage.

·     Pliable

It can withstand structural movements.

Cons

·     Limited installation window

Cannot be installed in wet conditions or else it will leak.

·     Vulnerable to UV

The adhesive can weaken from exposure to UV rays

·     Energy-inefficient

Black EDPM roofs absorb more heat

4.  Polyvinyl chloride (PVC)

Polyvinyl chloride (PVC) commercial roofs are single-ply roofing systems made from two layers of PVC roof material with polyester in between to act as reinforcement. They are heat-welded.


Pros

·     Strength

They are flexible and strong.

·     Chemical resistance

They can withstand exposure to chemicals, oils, and industrial byproducts.

·     Customization

The color of the roof can be customized.

·     Maintenance

They are easy to clean.

Cons

·     Costly

They are not the most affordable roofing option.

·     Energy-inefficient

They are not heat resistant.

·     Incompatible with asphalt

If used with asphalt, they will age prematurely.

5.  Metal roofs

 Metal commercial roofs can be made from a variety of materials – galvanized steel, aluminum, zinc, stainless steel, copper, or combinations of those.

Pros

·     Maintenance

They need very little maintenance.

·     Array of options

They come in a wide range of finishes and systems.

·     Affordable

Compared to how long they last, they are not expensive.

·     Heat reflection

They can reduce a building’s energy bill.

Cons

·     Damage prone

They dent easily and are prone to corrosion.

·     Noisy

In windy conditions, they make a lot of noise.

·     Leaks

They must be precisely installed to prevent leaks.

For more information on what the best roofing type for you is, or if you need repairs on your commercial roof, contact R&A Contracting at 636-387-7557


June 4, 2025
TPO, PVC, EPDM, SPF—there are a lot of commercial roofing options (and acronyms) to choose from. But what makes SPF the best choice, and what should you know before investing in it? R&A Contracting has put together some commonly asked questions about SPF to provide all the information you need to make an informed decision. What Is SPF Roofing? SPF roofing is made of two chemicals, isocyanate and polyol, which are sprayed onto the roof deck to form an insulative, waterproof foam. The chemicals might raise some red flags for you regarding safety. Once installed and cured, SPF is safe. Roofing technicians wear protective gear to avoid breathing in irritants as they apply the material, and as long as you aren’t right there when it’s being installed, you’re all good! How Long Does It Last? An SPF roof can last 30–40 years, sometimes longer. Recoating is recommended every 10–15 years. As with any other roofing material, its lifespan depends on the quality of the installation and how well it’s maintained afterward. What Are Some Advantages? Energy Efficiency - SPF has high thermal resistance, which improves building insulation and reduces heating/cooling costs. Versatile Installation - Foam can be installed over existing roofs, so you don’t have to spend a fortune on a total replacement. Adaptability - SPF isn’t just for flat roofing. As a flexible spray-on material, it can be layered over slopes and architectural features without damage. Leak Resistance - There are no seams or joints, just one smooth surface that seals out leaks and air. Sustainability - With less material to tear off and throw into the landfill, SPF is a more eco-friendly option. It’s also low in VOCs and ozone depletion potential. What Are Some Drawbacks? Initial Cost - SPF can be more expensive than some other roofing options, but that cost is offset by long-term energy savings and less frequent maintenance. UV Sensitivity - SPF is relatively sensitive to harsh sunlight, so keeping up with re-coats every 10 years is ideal. Dependence On Installation Quality - If applied incorrectly, an SPF roof can be prone to issues. A contractor who’s highly experienced in SPF roofing is a must. Is Maintenance Required? SPF roofs should be inspected at least twice a year. Spring and fall are great times to schedule maintenance so your system is ready for the harsher summer and winter months. Technicians will handle minor tasks like filling holes and cleaning the surface, preventing bigger issues in the long run. What Does the Installation Look Like? Generally, SPF installation can be described in four steps: Preparation – The existing roof is cleaned, dried, and prepped for the SPF. Application – Isocyanate and polyol, two liquid chemicals, are sprayed onto the surface to form a layer of foam. Curing – The foam expands quickly to create a rigid, watertight layer over the roof deck. Coating – A protective coating is applied over the SPF for extra strength, improving its weather resistance and longevity. How Can I Get SPF Roofing? This one’s the easiest question yet. R&A Contracting is proud to be a certified SPF installer for the greater St. Louis area. We apply foam roofing that’s seamless and efficient, so you can enjoy a cost-effective system with minimal hassle. Not to mention your employees and visitors will thank you for the comfier temperatures! Just give us a call at (636) 387-7557 to get started.
May 22, 2025
In St. Louis commercial roofing, TPO and EPDM have led the pack for a long time. But there’s a new leader emerging in STL: spray polyurethane foam, or SPF roofing. Here’s why more business owners are choosing SPF: Better Insulation TPO and EPDM are less effective at keeping indoor air, well, in. That means you have to spend more on heating and cooling to maintain comfortable temperatures, which can kill any facility’s budget. SPF is a much better thermal insulator, supporting better energy efficiency and lower utility bills. Seamless Application TPO and EPDM rely on seams that can break open in harsh weather and leak over time if not properly sealed or maintained. SPF, on the other hand, is sprayed directly onto the building. This spray application creates a seamless, watertight membrane that’s less susceptible to leaking. Versatility Because all you have to do is spray it on, SPF can be applied to a wide variety of roof surfaces—including your existing TPO or EPDM system. It strengthens what’s already there, sparing facility owners from a frustrating and expensive replacement. Compare this to TPO and EPDM, which aren’t suitable for all roofing configurations and require a lot of preparation to install. Durability SPF lasts up to 50 years with proper installation and re-coats. EPDM and TPO don’t typically last as long, and while they are a cheaper choice than SPF, the latter pays for itself in energy savings and a longer lifespan. Curb Appeal Regarding EPDM specifically, its flat, black appearance might be a bit lackluster depending on the type of business you operate. In comparison, the sleek, white look of SPF roofing might add a more modern and appealing finish customers can appreciate. Eco-Friendliness With spray polyurethane foam, there’s typically less stripping and removing of old roofing materials. The foam can be applied as part of a retrofitting or reroofing project, avoiding a complete tear-off that sends a lot of trash to the landfill. This is a great option for property owners who want a more environmentally friendly solution. Install an SPF Roof With R&A Contracting Convinced about SPF? R&A Contracting can install it for you! With over 35 years of industry experience, we keep facilities safe, comfortable, and leak-free by applying SPF to their roofs. Don’t wait to protect your business from the elements and extend the lifespan of your roof. Call R&A Contracting today, and we’ll manage a hassle-free SPF installation!
May 22, 2025
When it comes to protecting your roof, Spray Polyurethane Foam (SPF) is the best choice available. One of the great attributes to an SPF cool roof is its ability to withstand even the most severe weather elements. With routine re-coatings, an SPF roof has a lifetime guarantee. So, how is a SPF roof installed? SPF is seamless, watertight, and lightweight due to its original liquid state. SPF combines two elements, polyol and isocyanate, to create a dual-compound liquid foam. When the isocyanate and polyol contact each other, they instantly bond and begin the expansion process. During application the SPF expands to almost twenty times its liquid density, creating a monolithic covering over any roofing surface. As the SPF bonds and expands, it naturally adheres to any surface and seals off exposed cracks and seams. This eliminates any need for flashing and caulking. Many commercial roofing solutions rely on fasteners to hold flashing, seams, and joints into place. Each of those contact and seam points are vulnerable to incoming moisture. A fully cured SPF roofing solution can reliably withstand any standing water because of its air and watertight bonding. The closed-cell composition of SPF means there are no openings for water or moisture to invade exposed contact points. The end result is a durable, long-lasting monolithic covering that will greatly reduce additional maintenance upkeep, such as caulking around seams and replacing weather stripping around ductwork each year. The energy efficiency of SPF is a massive cost reducer for any commercial building. A standard SPF cool roofing solution can reduce HVAC costs by up to 30% per year! The airtight density of SPF creates a highly insulated covering that registers upwards of 6 R-Value in heat resistant indexes. Continued protection against ultraviolet (UV) radiation is made possible through a thin elastomeric coating that can be continuously reapplied to protect the base coat of SPF. Re-applications are recommended once every 10-15 years, which is a significant change from continual maintenance of other com  mercial cool roofing solutions. As St. Louis’ expert in closed-cell SPF commercial cool roofing solutions, we strive to help businesses from Lake St. Louis to Chesterfield, Ballwin, Florrisant, U-City, and all over our great city save energy and protect their roofs for years to come. We do our best to give you the best because we put the proof in waterproof! Call R&A Contracting today! 636-387-7557
August 9, 2022
The roofing industry is probably the last thing most people think about when they look for ways to boost their bottom line through energy efficiency. However, taking a step back and looking at your roof can be crucial for a business owner or facility manager looking to make their property more energy-efficient. In the world of commercial roofing, spray foam is widely considered to be one of the most effective materials in terms of energy efficiency and durability. As a building owner or facilities manager, a tremendously durable roof that helps your facility improve its energy efficiency is a big-time win. Why SPF Roofing Is Energy Efficient Business owners and facility managers are responsible for staying up to speed with construction trends and industry buzzwords. They need to keep an eye on the latest technologies and be able to filter the buzzwords from the tech that is here to stay. Take the time to become familiar with cool roofing technologies. They are here to stay, and they are poised to deliver big energy savings for your organization. The big idea behind why cool roofs are here to stay is not complicated. A cool roof is any roofing component that incorporates technologies or materials that allow the roof to reflect and control more solar radiation than a traditional roofing surface. How Cool Roofs Can Save You Significant Money A cool roof may be an extra expense in the beginning, however, it can save your organization significant money over the long haul. The benefits to your bottom line include: A More Comfortable Environment: We tend to work better when we are comfortable. Your building will be cooler, and there will be less temperature fluctuation. The more comfortable your employees are, the more efficient they will be. Lower Energy Costs: The amount of energy needed to cool your building could be substantially reduced. This could bring a substantial energy savings to your organization. A Longer Lifespan for Your AC Units: Your AC units will have a lighter workload. This will increase their lifespan. A Longer Lifespan for Your Roof: Roofs covered with polyurethane foam are all but guaranteed to last substantially longer than roofs covered with conventional roofing materials. Let’s Talk About Increasing Your Energy Efficiency A polyurethane roof covering is going to reduce your energy costs, increase your roof’s durability and longevity, and make a much smaller environmental impact than a traditional roof. So now, the last thing you need to know is who to call if you’re interested in a foam roof for your building. Our roofing experts at R&A Contracting are among the best spray foam installers. Plus, we are commercial roofing experts. It is all we do. As a customer you can take comfort in knowing our roofing knowledge is only surpassed by our quality of customer service. We consider our customers part of the R&A family. Give us a call today for a free inspection to get started on your roofing project!
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Saving money, increasing your building’s longevity, and using less energy is the trifecta of savings and efficiency for any business owner or facilities manager. SPF roo fing can dramatically increase a facility’s energy efficiency as well as the longevity of almost any roof. Coupling SPF roofing with solar power could lead to major wins for you and your organization. What Each Technology Brings to the Table Deciding to attach solar panels to your roof and install a foam membrane is a big decision, no matter which way you slice it. You should fully understand how each technology is going to impact your building’s energy efficiency. SPF foam is considered a ' cool roofing technology ' . Cool roofing technology is basically any roofing substance that allows a roof to maintain a cooler temperature than it would with a traditional roof covering. In terms of cool roofing, SPF provides several benefits that can add up to big increases in energy efficiency. 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By Hibu Websites April 20, 2022
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