Cut Hole Through Wall With Aluminum Siding

Apply a thick bead of silicone adhesive.

Cut hole through wall with aluminum siding.

I want to install a bathroom vent fan that vents to the exterior of the house straight through the wall. If you notice that the saw binds pull the hole saw away from the siding tilt the hole saw in a different direction and restart drilling the hole. When using a hole saw to drill the hole in aluminum siding keep the saw slightly tilted to one side to reduce the chances that the hole saw will bind while cutting the hole. It s basically a smallish router and used all the time for cutting holes in drywall shower walls etc.

Here s one that claims to come with a circle cutting attachment for 15. It may not be an obvious choice but fitted with the right blade a circular saw is a great metal cutting tool. Thick using a ferrous metal cutting blade. 6 pull the wall cap and duct out of the wall.

Hot metal chips will fly everywhere. Cut hole in aluminum siding for bathroom vent fan my house has aluminum siding. If your perimeter holes touch the circle you drew then your cutting the hole will be that much easier. Be sure to work slowly in order to maintain the proper form.

In our test it cut through rebar like a hot knife through butter. Cut across the contours of the aluminum siding with a radial arm saw. Use a nibbler to cut in a straight line. Sometimes called a spiral saw or rotary cutting tool.

I have an ancient dewalt 660 with a circle cutting attachment. Then using a jigsaw cut on the line from hole to hole until you have completed the circle you may need to find blades that will go all the way through otherwise you will need to repeat this process from both sides which is a bit of a pain. Tons of companies make similar tools. While cutting at the width of the aluminum siding make use of straight tin snips.

You can cut mild steel up to about 3 8 in. Drill pilot holes through the screw holes on the wall cap and through the mounting block siding and wall. Step 2 cut the width. Remember that any imperfections to your cutting will be covered by the thimble.