If you see dampness or frost you need better roof ventilation and some attic vents.
How do i ventilate my attic.
For the best results place roof ventilation near the roof s peak and soffit vents in the eaves.
Air flows in through the soffit vents and out through the roof vents.
However the utility of attic ventilation fans is actually quite a controversial topic.
How to properly ventilate your attic.
How attic ventilation works.
Most effective ventilation uses a ridge and soffit continuous ventilation system but even these designs can vary from roof to roof.
My concern is can an attic vent flow be to large and let water in and does spray insulation keep attic protected by leak in.
Good insulation reduces fan effectiveness.
Moreover if you have asphalt shingles on the roof attic.
Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside.
Ventilation can be accomplished using various products and techniques.
Before we explore how to ventilate an attic space it is prudent to understand how much ventilation is needed.
The downside of attic ventilation fans.
Vents come in various styles.
Intake vents which are located at the down slope edge of the roof aka eaves and allow fresh air into the attic.
Ventilation of attic spaces is required by most building codes as well as by roofing material manufacturers and the national roofing contractors association nrca.
To properly ventilate an attic two types of vents are needed.
Grab a flashlight and inspect your attic during the winter.
This is an informative post thank you for sharing.
Ensuring your home has the proper attic ventilation according to these guidelines however can save yourself the stress and hassle of an emergency roof repair.
Exhaust vents which are located near or on the ridge line of the roof and allow air to leave the attic.
To avoid rotting wood clumping insulation and mold your attic needs to be properly ventilated.
Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.
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.
Soffit vents may leave air trapped at the top of your attic.
Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks.
However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the.