To keep moisture out of the roof assembly a roofing underlayment with 1 perm or less class ii vapor retarder must be installed under the shingles.
Raised roof shingles for ventilation.
Warranties on hot roofs.
Ventilation which balances air intake and exhaust in your attic is what allows your home to breathe.
To achieve full ventilation of the attic there must be an air inlet at the base of the roof through perforations in the eaves soffit.
It s a roof top installed shingle over intake vent that can be used to supplement existing soffit or undereave vents.
If it s a shingle over roof vent ridge cap shingles will be applied over the vent and secured with two inch nails.
Effective attic ventilation systems reduce damaging heat and moisture in your attic promote energy efficiency by helping to reduce the load on your air conditioner in the summer and also reduce the risk of ice dam formation on your roof.
The most effective vents have four open sides and rise above the roof which allows them to capture the wind from all directions to produce a suction effect.
A shingle over vent is installed over the ridge of a roof and is covered over by asphalt shingle caps that match the surrounding roof shingles.
Asphalt shingles require special attention when installed on unvented roof assemblies in hot humid mixed humid and marine climates due to inward vapor drive.
A properly installed roofing system also depends on attic ventilation.
A self contained 4 foot sectional shingle over ridge vent designed for ventilation.
See the benefits of attic ventilation a new roof is more than just shingles.
Certainteed intake vent provides continuous intake airflow at the roof s edge and provides proper intake ventilation for homes with little or no overhang.
The importance of proper attic ventilation while shingles are the most highly visible part of your roof ventilation is a critical component to your roofing system.
Each section also contains integrated end plugs located every foot to reduce scrap when splicing.
Industry studies show that shingle temperature is only raised by a few degrees with a hot roof.
When your attic is filled with spray foam insulation to create a hot roof your attic s temperature rises because the thermal envelope is shifted to the underside of your roof because ventilation is not present.
When installed as part of a properly balanced when installed as part of a properly balanced attic ventilation system gaf cobra exhaust vent is a shingle over exhaust vent installed at the roof ridge that helps exhaust excess heat and moisture from your attic.
It comes on an easy to install flexible mesh roll and is hand nailable with no complicated fitting wrapping nail gun adapters connectors or end plugs needed.
