Vents and Breathers-
for relief of trapped moisture in roofing systems. Vents and Breathers are used
to relieve moisture vapor trapped within a roofing system. Moisture may have
entered the system due to drying of lightweight insulating concrete materials,
leaks, faulty vapor retarders, or during construction. Portals Plus Vents and
Breathers can prevent blistering, delamination, and billowing of the membrane,
while helping to maintain thermal design efficiency. Vents are manufactured
with a one-way valve which opens to relieve moisture vapor pressure and then
closes to prevent moisture from re-entering the system. Breathers allow for
both exhaust as well as convective movement of air within the system.
How many do I need?
See the Vents and Breathers Recommendations
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