Polyurethane Spray Foam Roofing in Phoenix, Tucson, AZ and Surrounding Areas

Spray polyurethane foam, commonly called SPF, is a roofing system applied as a liquid that expands and cures into a rigid, seamless foam layer directly on the roof deck or existing substrate. Once cured, the foam is covered with a protective elastomeric coating that shields it from UV exposure and provides the finished, walkable surface.

We install spray polyurethane foam roofing throughout Phoenix, Tucson, and the surrounding Arizona communities on residential flat roof sections, patio covers, and additions, as well as full commercial flat and low-slope roofing systems.

Yes. Lyons Roofing holds Arizona Registrar of Contractors license AZ ROC# 348074, and our spray foam applicators are trained specifically in SPF application technique. We are fully bonded with general liability and workers compensation insurance on every foam roofing project.

Spray foam creates a seamless, monolithic roofing surface with no seams or fastener penetrations, eliminating the water entry points most common to other flat roofing systems. It also provides meaningful insulation value directly within the roofing assembly, which matters significantly in Arizona’s extreme summer heat, and it self-flashes around most penetrations rather than requiring separate flashing details at every vent, pipe, or piece of equipment.

Spray polyurethane foam provides meaningful insulating value per inch of thickness, contributing directly to the roofing assembly’s thermal performance. In Arizona’s climate, where roof surfaces can reach temperatures well above 150 degrees Fahrenheit in direct summer sun, this insulation value helps reduce heat transfer into the building below, which can meaningfully affect cooling load.

An elastomeric coating, typically a white or light-colored reflective product, is applied over the cured foam to protect it from direct UV exposure and to provide reflectivity that reduces heat absorption. This coating is not optional. Foam left uncoated or with a degraded coating degrades rapidly under Arizona’s intense sun, which is why the coating and its maintenance schedule are considered part of the roofing system, not a separate cosmetic layer.

Foam thickness is specified based on the desired insulation value and the roof’s drainage requirements, since foam thickness can also be used to help correct slope and direct water toward drains. Our installation process specifies appropriate thickness for your specific roof based on these factors rather than applying a single standard thickness to every project.

In many cases, yes, provided the existing substrate is structurally sound and properly prepared. Foam can be applied over certain existing roofing systems, avoiding a full tear-off in situations where the underlying structure does not require replacement. Our inspection determines whether your existing roof is a suitable substrate for foam application or whether tear-off is the more appropriate starting point.

Because foam is applied as a liquid that expands and conforms to whatever surface it contacts, it naturally seals around pipes, vents, and other roof penetrations as part of the application process itself, rather than requiring a separately installed flashing boot or collar at each penetration point the way membrane or shingle systems typically do.

Yes, when properly specified. Foam application thickness can be varied across the roof field to create or correct slope, directing water toward drains rather than allowing it to pond. This capability is one of the practical advantages of foam over some other flat roofing systems when a roof has inadequate existing slope or drainage design.

Substrate preparation includes cleaning the surface of debris and contaminants, addressing any existing moisture in the substrate, repairing or removing deteriorated material that would compromise adhesion, and confirming the surface is dry and suitable for foam application. Foam applied over a wet or contaminated substrate will not perform correctly regardless of the quality of the foam material itself.

Our process includes substrate inspection and preparation, foam application at the specified thickness with attention to drainage slope, cure time before coating application, and application of the protective elastomeric coating at the specified thickness and coverage rate. Each stage is inspected before proceeding to the next.

A properly installed and maintained spray foam roof can perform for 20 years or longer in Arizona. The foam substrate itself has a long service life when protected, but the protective coating requires periodic recoating, typically in the range of 8 to 12 years in Arizona’s intense UV environment, to maintain that protection.

Every Lyons Roofing foam installation includes a recommended recoat schedule as part of the project. Recoating is typically needed in the 8 to 12 year range in Arizona, sooner than national averages due to our intense, sustained UV exposure, and maintaining this schedule is what allows the foam substrate beneath to reach its full potential service life.

The combination of foam’s insulation value and the reflective elastomeric coating’s solar reflectance can meaningfully reduce heat transfer into the building compared to some other flat roofing systems, which can support lower cooling costs. The specific impact depends on the building’s existing insulation, HVAC system, and the roof’s exposure.

Yes. Foam’s self-flashing characteristic is particularly practical on commercial roofs with extensive rooftop equipment, since it conforms around HVAC curbs, conduit, and other penetrations without requiring the same volume of individually installed flashing details other systems need at each piece of equipment.

Yes. We provide a written workmanship warranty on every foam roofing installation. Manufacturer warranties on the foam and coating products vary and are documented as part of your project packet.

Lyons Roofing does not publish pricing because project cost depends on roof size, existing substrate condition, specified foam thickness, and coating specification. Our free inspection and written proposal provides a specific cost estimate for your particular project.

Yes. Foam roofing is commonly applied to flat and low-slope residential sections including patio covers, Arizona rooms, and additions, even when the main structure has a pitched tile or shingle roof. This is one of the most common residential foam applications we perform.

A properly installed and maintained foam roof with intact coating performs well through monsoon rainfall, since the seamless application eliminates the seam-related leak points other flat roofing systems are more vulnerable to. Foam roofs with degraded or overdue coating are more vulnerable to monsoon-related moisture intrusion, which is why maintaining the recoat schedule matters directly to monsoon season performance.

Foam roofing’s insulation value can reduce a building’s cooling energy demand, and the system’s long service life when properly maintained reduces the material replacement cycle compared to shorter-lived roofing systems. Specific environmental considerations depend on the exact product formulation used.

Yes, though hail exposure history is a relevant factor in coating specification and thickness. We assess any prior hail damage history for a property during our inspection and can discuss coating products with enhanced impact resistance where hail exposure is a specific concern.

Yes. We provide free consultations for both residential and commercial property owners considering spray foam roofing, including comparison against other flat roofing systems appropriate to your specific building and budget considerations.

Call 602-638-3135 (Phoenix) or 520-900-1442 (Tucson) or request a consultation online. Lyons Roofing serves Phoenix, Tucson, and the surrounding Arizona communities, with a free inspection and written proposal before any work begins.

Lyons Roofing has installed spray foam roofing throughout Arizona since 1993, licensed under AZ ROC# 348074, fully bonded and insured, with active A+ BBB accreditation in both Phoenix and Tucson. As a member of the Arizona Roofing Contractors Association, we follow the professional standards governing foam roofing installation in Arizona.

Roofing applications use closed-cell spray polyurethane foam almost exclusively, since closed-cell foam has a rigid structure, higher R-value per inch, and does not absorb water the way open-cell foam does. Open-cell foam is generally used for interior wall and attic insulation applications rather than exterior roofing.

Yes. We install foam roofing on residential flat sections, patio covers, and additions, as well as full commercial flat and low-slope roofing systems, adapting the specification to the scale and use of each specific property.

Both are common Arizona commercial flat roofing systems with different characteristics. Foam offers a seamless, self-flashing application with integrated insulation value and the ability to correct slope through variable thickness. TPO is a single-ply membrane system installed in sheets with heat-welded seams. The better choice depends on the specific building’s existing roof condition, penetration density, and drainage design, which we can discuss during a consultation.

Yes. Foam’s self-flashing application is particularly well suited to roofs with numerous existing penetrations and equipment, since the foam conforms around these obstacles during application rather than requiring separate flashing work at each one.

Yes. Given the importance of the recoat schedule to foam roof longevity in Arizona’s UV environment, we offer scheduled maintenance programs that include coating condition assessment and recoating at the appropriate interval, helping foam roofs reach their full potential service life.