Spray Polyurethane Foam Roofing

delivers the highest R-value per inch of any insulation product

Spray Polyurethane Foam for Commercial Flat Roofs


Spray Polyurethane Foam (SPF) is an eco-friendly roofing option for commercial, industrial and manufacturing facilities. While SPF roofing is not the most known type of roofing material, the technology has been around since the early 1960s for industrial, commercial, and residential facilities. An SPF roofing system can be used in any climate, and when properly installed and maintained, can last over 50 years.


Here at West Roofing Systems, we’ve been installing Spray Polyurethane Foam Roofs for over 37 years. Our turnkey solutions deliver energy savings, reduced maintenance, and sustainability – not to mention a durable, long lasting, quality roof.


West Roofing Systems’ experienced project managers and applicators bring decades of experience to each job, ensuring the best solution at the best price.

Our West Roofing Systems team talks about the Spray Polyurethane Foam Roofing installation and more in our video.

Spray Polyurethane Foam Installation


Before the installation can start, the existing roof (or substrate) needs to be prepared. Rather than stripping the existing roof, the contractor will most likely prepare the substrate by getting rid of all dirt, dust, and contaminants. This can be done with air pressure, vacuuming, or even just sweeping.


The first layer put down by the contractor is the polyurethane foam. This foam is created by combining two liquids (a polyol/resin and an isocyanate) as it’s sprayed onto the existing roof substrate.


As the liquid is sprayed onto the existing roof, it creates a foam that expands 20 times in size to form a solid, seamless foam surface. When the foam has expanded, this layer can be between 1 and 1.5 inches in thickness.  Since the polyurethane foam adheres to most common surfaces, it can be installed on any roof slope.


Read more about Spray Polyurethane Foam Roofing installation and performance.

Spray Polyurethane Foam Roofing Cost


For an average 20,000 sq. foot commercial roof, it will usually cost between $4.00 and $7.00 per square foot in materials and labor to install a typical SPF roofing system. This price range is for an SPF roof of average thickness and building structure. Read more about the costs of Spray Polyurethane Foam Roofing.

Some variables that affect pricing include:

  • Size of Your Roof
  • Thickness of SPF (R-value desired)
  • Condition of Existing Roof
  • How much of a slope your roof is on
  • Access to your roof
  • Climate/Weather Patterns in Your Area
  • Type of warranty
SPF Roofing with West Roofing Systems in Cleveland, Ohio

Spray Polyurethane Foam Benefits


A spray polyurethane foam roof system decreases energy expenses, contributes to LEED and Energy Star certification, provides a heat, moisture and air barrier is easy to maintain and can last for years by renewing the roof’s protective coating. Building owners realize significant reductions in energy expenses for heating and cooling, as well as reduced maintenance costs.


The benefits of installing a spray polyurethane foam (SPF) roofing system, rather than another roof type, are numerous in terms of installation, performance, cost, and longevity. Read more about the pros and cons of Spray Polyurethane Foam Roofing.

Restoration Option


Once a Spray Polyurethane Foam Roof is installed, it requires minimal upkeep. If properly maintained, your SPF roof can last over 50 years. SPF roofing systems should be inspected semi-annually, in the Spring and again in the Fall. Additional inspections are also suggested following any event that might have caused damage to the system.


When your SPF roof is in good shape but needs to be improved, you can have a silicone restoration membrane installed to new the life of your commercial roof. In the event where a silicone recoating is needed, there’s no tear-off of the existing materials; you apply the new coat on top of the current system.


Energy Efficient


The energy efficiency and roof insulation properties of a closed-cell spray polyurethane foam roof contribute to significant energy savings throughout the life of a building. In fact, studies show that the average payback period for a new foam roof can be reached in as little as five years.


  • Thermal, air, and moisture barriers and delivers the highest R-value per inch (6.25 per inch) of any insulation material available.
  • Your building is insulated from heat and cold and significantly reduces energy consumption and related costs.





The durability of SPF surpasses traditional roofing systems. The foam material can expand and contract with the building in accordance with outside temperatures, decreasing the likelihood of cracks and splitting.

Seamless and Waterproof


Since the SPF mixture is applied as a liquid, it can fill gaps, seams, and cracks in the existing roof and substrate. The continuous solid surface does not require joints or seams, removing the most vulnerable area for leaking.



Environmentally Friendly


West Roofing Systems is at the forefront of installing roofing systems that feature recycled products and sustainable roof practices.


  • Our spray polyurethane foam roof system delivers multiple LEED (Leadership in Energy and Environmental Design) points.
  • A variety of manufacturers we provide offer high solids white silicone coating which meets the reflectivity, environmental, and “cool roof” requirements for the organizations listed below. Benefits include energy savings, lower internal building temperatures, improved effectiveness of HVAC units and reduction of “Urban Heat Island Effect” and air pollution.


There are a variety of eco-friendly roofing products, which feature zero ozone depletion potential (ODP), ultra-low global warming potential (GWP) and solvent-free silicone coatings.


 Through the use of silicone roof coatings, a seamless, durable and waterproof covering can be provided, which saves on installation time, while increasing West Roofing Systems’ productivity and quality.

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