Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool.
Attic vents are they necessary.
See the benefits of attic ventilation a new roof is more than just shingles.
The intake vents work with ridge vents to allow cool air to enter the attic space forcing warm air to exit through the ridge vents.
The downside of attic ventilation fans.
While hardly anybody agrees on the best roof ventilation system everybody agrees some roof vents do hardly any good at all.
In cold climates the primary purpose of attic or roof ventilation is to maintain a cold roof temperature to control ice dams created by melting snow and to vent moisture that moves from the conditioned space to the attic ventilation acts to bypass the vapour barrier created by most roof.
Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.
Soffit vents are one of the most popular intake vent styles.
The ventilation should be divided equally between soffit vents and roof or gable vents.
The majority of roofing experts agree that ridge vents are the most effective and cost effective roof vents available.
They range in style from 6 inch round stainless steel vent covers that are placed in the soffit between each rafter to continuous vents that run the entire length of the soffit.
Intake vents located at the lowest part of the roof under the eaves allow cool.
Throughout the balance of this digest the terms attic and roof will and can be used interchangeably.
Good insulation reduces fan effectiveness.
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.
Continuous or individual soffits.
They are easy to install under the roof s overhang which is known as the soffit are generally hidden from sight and provide excellent protection from weather outdoor debris and pests while still allowing air to flow into the attic.
Take for example ridge vents.
However the utility of attic ventilation fans is actually quite a controversial topic.
Located at the edges of the roof these intake vents can be installed at the eaves under the soffit at the drip edge or under the shingles at the roof s edge.
These vents are installed in the soffit the enclosed portion under the roof overhang and permit air to flow up under the roof and into the attic.
Aside from vents you ll need a handful of 1 1 4 in.
I have roof vents so i have roof ventilation.
When a vapor retardant has been applied to the building during construction the attic ventilation can be reduced to 1 300 of the total area of the attic floor.
Galvanized sheet metal screws for the soffit vents utility knife.
