Roof Moisture Relief Vents

The one way vent allows trapped air pressure to escape while the two way breather combined with the one way vent will help reduce moisture.

Roof moisture relief vents.

Mrv 600 one way moisture relief vent the one way moisture relief roof vent is engineered to prolong the life of your roof system by reducing both moisture within the roof system and trapped air pressure within the building. Flat and low slope roof designs to avoid moisture condensation problems flat roofs call up a whole new breed of building moisture problems how to avoid moisture traps under flat roofs avoid mold rot caused by moisture trapped under un vented flat roofs questions answers about the cause cure prevention of moisture problems in flat roofs and similarly hard to ventilate structures. Trapped air pressure and moisture can cause a reduction in thermal protection of the insulation and roof membrane system leading to roof deck damage. Portals plus insulation breathers and vents are used to prevent moisture vapor from becoming trapped in the roof system equalizing air pressure reducing the risks of ballooning blow off deteriorating insulation and separating deck seams.

Relief of trapped moisture in all types of roof systems. The challenge lies in letting the roof have the vents it need and flashing them properly to keep water out. Mrv 600 one way moisture relief vents can be purchased individually. Available with one way vent.

Vapour retarders and even good retarders or damp building materials prevents sealing of moisture in roof.