How To Drill Hole In Attic At Roof

Locate the top of the hole about 15 in.

How to drill hole in attic at roof.

Position the vent pipe up to the bottom of the roof. But before you cut any holes plan the locations of the attic vents. Place all the roof vents on the same side of the roof. Standard practice is to drive a nail through but my friend was heart set on using a drill.

I did this recently to run ethernet cable in an exterior wall. With the pipe in a vertical position trace around the pipe using a pencil. The penetration will be oval to have a round pipe exit vertically through a pitched roof you need an oval hole in the roof. Down the attic ladder we went climbing up the roof ladder to find our drill bit like little kids hunting for easter eggs.

Below the peak of the roof. Cutting drywall and drilling from below may be the only option if you have to access the attic there. When cutting through drywall from the interior of a room use a utility knife and cut carefully you don t want to drill through a hidden wire or the paper backing of the attic insulation. Use a drill with a hole saw bit of 1 inch or more to start your hole then use a power saw such as a jigsaw or reciprocating saw to make the cuts in the soffit.

If your roof peak runs parallel to the street put them on the backside where they ll be less. Cut a square hole in the roof the same size as the hole in the base of the vent you re installing. An alternative is to drop all the way through the wall cavity from another top plate in the attic and into the basement or crawlspace then run over to the wall you want to end up in. Cutting ventilation holes using a chalk line mark the parallel lines for the opening of your vent.

Go into your attic. Mark the hole with chalk and set your saw depth to cut through the shingles and the roof sheathing only. Mark the ends with a square. Mark the roof venting locations from the attic where you can see the rafters and avoid placing roofing vents over them.

Where the scrap wood hit the understructure of the roof we drilled a hole straight through to the outside.