Installing Venting Through Cold Attic

From up on the roof use a jigsaw or reciprocating saw to cut a 4 in.

Installing venting through cold attic.

Start in the attic and drill a hole through the roof in the desired vent location. Soffit vents the narrow horizontal section on the underside of your roof eaves. You can attach the pieces together in all the holes by using the clamps that you have. There are different kinds of vents.

The standard is one square foot of venting for every 150 square feet distributed evenly between the soffit and roof vents. You will then install the dryer vent through the hole that you have just made. The roof is vented by simple holes cut through the sheathing and protected with vent caps or by continuous ridge vents. Attic for example has an area of 1 200 sq.

Then aim for about 1 sq. Attach the roof vent to the duct that is from the top of the roof. A 30 x 40 ft. The building code lets you reduce that by half under some conditions but more roof ventilation is usually better.

Leave the drill bit sticking through the roof so you can find the hole. If there s blown in insulation like ours rake back the fluffy stuff with a 3 or 4 ft long 1 x 6 or use a garden rake or hoe. Try to keep it close to the fan location. Adequate attic ventilation is important to reduce your utility bills and avoid damage to the roof and attic.

In of vent opening per 150 sq. The attic is usually colder than the rest of the house during the winter and that can create a problem for a dryer vent. Use rigid metal ducting aluminum or galvanized steel with lengthwise seams facing up and joints sealed with foil tape or duct mastic or rigid plastic pipe. You are then back to sticking the vent to the wall with the brackets and screws.

Installation first requires a wood frame made of 2x4s installed from the attic between two studs. If you vent through a soffit where attic vents are often located the moisture will get sucked back up into the attic or roof venting. Venting the soffits is often done by installing continuous strip vents between the soffit boards or by adding rectangular and round vents at regular spacing between the rafters the easier option for existing soffits. If the attic is insulated with fiberglass batts just pull back any that are blocking the flow of air.

First determine your attic area by multiplying the length by the width. Install half of the required vent area in soffit vents. Your roofer will build this frame just a little larger than size of the vent leaving 1 8 inch of extra room on each side. The number of vents in your roof will depend on the size of your attic.