Every modern roof assembly.
Ten systems from the manufacturers we're certified with, installed to specification so every one qualifies for its warranty.
Every modern roof assembly.
Installed to manufacturer specification by certified crews, so every system qualifies for its warranty.
The roof you see
From above, a roof reads as one surface. Underneath are the layers that keep water out and heat in.
Compare the assemblies
Pick a system to see what goes under it.
Also installed: architectural shingle and green roofs.
TPO roofing Thermoplastic single-ply · Low slope
A thermoplastic single-ply membrane, usually white, installed in wide rolls with seams welded by hot air.
Typical service life 20 to 30 years
- TPO membrane
- Cover board
- Insulation
- Roof deck
PVC roofing Polyvinyl chloride · Low slope
A thermoplastic single-ply membrane with plasticizers that keep it flexible and resistant to many chemicals and oils.
Typical service life 20 to 30 years or more
- PVC membrane
- Cover board
- Insulation
- Roof deck
EPDM roofing Ethylene propylene rubber · Low slope
A synthetic rubber membrane supplied in large sheets, known for flexibility across temperature swings.
Typical service life 25 to 30 years or more
- EPDM membrane
- Cover board
- Insulation
- Roof deck
Mod-bit roofing Modified bitumen · Low slope
Asphalt membranes modified with SBS rubber or APP plastic, installed in two or more plies for redundancy.
Typical service life 20 to 25 years
- Granulated cap sheet
- Base ply
- Cover board
- Insulation
- Roof deck
Built-up roofing Built-up bitumen · Low slope
Alternating layers of reinforcing felts and bitumen built up on the roof, finished with gravel or a coating.
Typical service life 20 to 30 years
- Gravel surface
- Felt and bitumen plies
- Cover board
- Insulation
- Roof deck
Spray foam roofing Spray polyurethane foam · Foam
Two-part polyurethane foam sprayed onto the roof, expanding into a seamless, insulating layer sealed with a protective coating.
Typical service life 20 years or more with recoating
- Protective coating
- Spray foam
- Roof deck
Coatings Polymer restoration · Restore
A fluid-applied membrane rolled or sprayed over a sound existing roof after repairs and prep.
Typical service life 10 to 20 years per coating
- Fluid-applied coating
- Existing roof
- Insulation
- Roof deck
Metal roofing Standing seam & panel · Steep
Metal panels with raised, interlocking seams, attached with concealed clips or exposed fasteners.
Service life Long: a well-installed metal roof can outlast two or three membrane roofs
- Standing-seam panels
- Underlayment
- Insulation
- Roof deck
Ten systems, side by side.
How they compare on the things owners ask about most. Hover a row to follow it across.
| System | Reflectivity | Redundancy | Foot traffic | Restorable | Best for |
|---|---|---|---|---|---|
| TPOLow slope | Very high | Moderate | Moderate | High | Apartments, warehouses, retail |
| PVCLow slope | Very high | Moderate | High | High | Restaurants, hotels, kitchens |
| EPDMLow slope | Moderate | Moderate | Moderate | Very high | Cold climates, large roofs |
| Mod-bitLow slope | Moderate | Very high | Very high | Very high | Hail, foot traffic, equipment |
| Built-upLow slope | Moderate | Very high | Very high | Very high | Proven multi-ply, restorations |
| Spray foamFoam | Very high | High | Moderate | Very high | Irregular roofs, added insulation |
| CoatingsRestore | Very high | Moderate | Moderate | Very high | Sound roofs needing more life |
| Green roofsLive | High | High | Low | Low | Amenity decks, stormwater |
| ShingleSteep | Moderate | High | Moderate | Low | HOA and garden-style |
| MetalSteep | High | High | Moderate | Very high | Snow country, long service life |
Relative ratings for comparison, based on typical specifications. Product lines and thicknesses vary by manufacturer.
What we install where.
Climate drives the choice. Hover a cell for the reason.
| System | West Coast | Intermountain | Mountain & Southwest | Texas | Southeast |
|---|---|---|---|---|---|
| TPO | Most common | Most common | Most common | Most common | Most common |
| PVC | Most common | Selective | Common | Common | Most common |
| EPDM | Selective | Most common | Common | Selective | Selective |
| Mod-bit | Common | Common | Common | Most common | Most common |
| Built-up | Selective | Common | Common | Common | Common |
| Spray foam | Common | Selective | Most common | Most common | Common |
| Coatings | Most common | Common | Most common | Most common | Most common |
| Green roofs | Common | Selective | Common | Selective | Selective |
| Shingle | Common | Most common | Most common | Most common | Most common |
| Metal | Common | Most common | Common | Common | Common |
Start with the building.
Warehouses and distribution buildings where reflectivity and install speed matter.
Restaurants, hotels and kitchens where oils reach the roof.
Mostly dry roofs that need more life without a tear-off.
Terraces, courtyards and roofs people use.
The brands behind the systems.
We install to each manufacturer’s published specification, which is what makes a system eligible for its warranty.
Partner
Partner
Partner
Partner
Partner
PartnerHow roof warranties work.
Commercial roof warranties come from two places: the manufacturer and the installer. The best coverage stacks both. Terms commonly run 10 to 30 years, depending on the system, thickness and specification, and your proposal lists the exact coverage.
- Installed by manufacturer-certified crews
- Built to the published specification
- Inspected by the manufacturer at closeout
- Maintained and documented over its life
Covers defects in the membrane or materials themselves. Available on most systems.
Covers materials and the installed system as a whole, issued after the manufacturer inspects the finished roof. The strongest coverage requires a certified installer.
Our own coverage on the installation, so one call reaches the company that put the roof on.
