Firestone Cover Boards
Foot traffic on a roof can crush
mineral wool boards resulting in ponding water and fasteners
popping up, possibly damaging the membrane. In case of plastic foam
insulations, foot traffic can also collapse the blown foam cells
and jeopardize the bond between facer and foam.
When foot traffic is high, a cover board spreads the load and
protects the insulation board. The use of a cover board in
reroofing provides a smooth and even surface, protects the new
membrane from any damage due to irregularities in the existing roof
Some boards can also be used directly over the steel deck, as an
underlayment board to protect the insulation board, to
help maintain the structural integrity of the roof and improve
the fire resistance of the roof/building. Firestone cover
boards may also be used as a backer board for the roof side or
Firestone offers 2 types of cover boards that bring
added value to the roofing system, prior to installation
of a durable EPDM or TPO roofing membrane.
ISOGARD HD contains a
high density closed-cell Polyiso core, laminated on both sides to a
heavy-duty, double-coated, non-organic fiberglass facer.
ISOGARD HD provides the highest thermal
performance of any 12 mm cover board product on the market, and it
is resistant to extreme weather conditions. Lightweight and
easy to cut and with more boards per pallet, this high density
cover board offers savings from reduced transportation costs, labor
and material during application.
DensDeck Prime is a
non-structural, glass mat-faced roof board that features a
non-combustible, water-resistant and silicone-treated gypsum core
panel. DensDeck Prime boards are an excellent fire barrier and can
also be used as an underlayment directly over steel deck. DensDeck
is a registered trademark of Georgia-Pacific.
To learn more about the properties of these cover boards, simply
click on the name of the product.
For further general information, click on one of the links