Cut Hole Through Wall With Aluminum Siding

Cut across the contours of the aluminum siding with a radial arm saw.

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 your perimeter holes touch the circle you drew then your cutting the hole will be that much easier. Sometimes called a spiral saw or rotary cutting tool. It s basically a smallish router and used all the time for cutting holes in drywall shower walls etc.

Use the panel to reduce the risk of snags while cutting. Hot metal chips will fly everywhere. You can cut mild steel up to about 3 8 in. Here s one that claims to come with a circle cutting attachment for 15.

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. Thick using a ferrous metal cutting blade. Remember that any imperfections to your cutting will be covered by the thimble. It may not be an obvious choice but fitted with the right blade a circular saw is a great metal cutting tool.

I have an ancient dewalt 660 with a circle cutting attachment. Be sure to work slowly in order to maintain the proper form. Use a nibbler to cut in a straight line. Apply a thick bead of silicone adhesive.

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. Cut hole in aluminum siding for bathroom vent fan my house has aluminum siding. In our test it cut through rebar like a hot knife through butter. Step 2 cut the width.

While cutting at the width of the aluminum siding make use of straight tin snips. Assuming you ve got access from below to the joist space you can use tin snips also called aviation snips to cut the siding and a hole saw or reciprocating saw sabre saw or sawzall to cut. Cut metal with your circular saw. 6 pull the wall cap and duct out of the wall.