Installing Roof Vents On Existing Roof

Nail the lower corners with roofing nails and tar the heads.

Installing roof vents on existing roof.

The amount of venting your attic needs is based on its floor space and to ensure proper air circulation the venting should be equally divided. Drill a hole upward through the middle of the area you desire and leave the drill bit sticking up through the roof so you can find it from the outside. Allow space for the edge of the vent opening where it will rest on the roof. Apply a bead of asphalt roof cement on the bottom of the vent.

Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof. Center the vents on the peak of your roof so the sides of the vent lay flat on the roof. If you need to cut the vent to fit at the end of your roof use a utility knife to make it flush with your home. You should be able to see the attic interior when done.

Mark the outline of the roof cuts that will be needed then use a skill saw to cut the outlined space. Take your time and do not use a straight blade use a hook blade you can get it at home of the deep. Hold the vent piece in place until you can nail it down. Apply a layer of sealant to the edges of the hole then place the vent into position.

The lower half of the flange sits on top of the shingles. How to add a roof ridge vent to an existing roof. Slide the vent under the shingles so they cover the top half of the vent flange. Locate the drill bit.

These specialty vents do not affect the. Installation first requires a wood frame made of 2x4s installed from the attic between two studs. First off i m not a professional roofer this is for the diy jack of all trades guys and gals out there. Use enough vent pieces to fill the length of the slot you cut.

Next position your ladder against your home and climb up to your roof. Choosing a whole house fan.