Green Sustainable Roofing
Because of the energy saving
characteristics and low maintenance costs of
SPF roof systems, these roofs are considered sustainable.
Spray Foam Roofing System over BUR. |
Spray
Polyurethane Foam (SPF) roofing consists of an
application of specifically designed foam covered with an
elastomeric coating (typically acrylic, silicone or
polyurethane) or aggregate covering to protect the foam from
ultraviolet rays.
SPF has a closed cell structure
that makes it water resistant. It must,
however, be protected by elastomeric coatings or other coverings
(such as aggregate) to prevent ultra-violet-induced surface
degradation. Such coverings can also be used for other
purposes, including, inhibiting moisture vapor transmission,
enhancing the aesthetics of the system, increasing the impact
and abrasion resistance of the system, achieving
non-flammability and meeting code requirements.
SPF roofing systems have good adhesion to
a variety of substrates including metal, wood, concrete and
built up roofing (BUR). Since SPF adds little
weight to existing roof coverings and can build slope
to fill in low areas, these systems are used
frequently as a recover roofing system. |
Insulation
Gaco-Western®