ROOFING REPLACEMENT services in Fresno, CA
What we do
We Specialized in Sprayed in place Polyurethane Foam insulated Storage Tank Insulation, cold storages and water proofing.
REROOFING IN FRESO CALIFORNIA
A SPF solution for reroofing might be the best choice for you if:
1) Your existing roof already has two membranes, in which case it has already met the maximum permitted by building code. However, SPF is extremely light and is usually exempted from that code limitation. If the existing roof is surfaced with gravel or ballast, removal of that surfacing and replacement with SPF will actually reduce some of the dead load on the structure.
2) The existing roof system is aged, which typically means it is under-insulated. One inch of wood fiber or perlite board would have an R-factor of 2.8, so applying two inches of SPF on top would add 11.2 (in•h•ft2/BTU), and substituting a reflective coating on the foam, compared to a dark-colored gravel, would reduce air conditioning load as well.
3) The system is fully adhered. Many single ply roof systems are partially fixed to the structural roof deck, especially those using mechanical fasteners. These systems may flutter and balloon under high wind load. SPF systems are fully adhered to the substrate and can serve as an air barrier as well as the roof membrane.