Cut Hole Through Wall With Aluminum Siding

I have an ancient dewalt 660 with a circle cutting attachment.

Cut hole through wall with aluminum siding.

Use the panel to reduce the risk of snags while cutting. Cut metal with your circular saw. I want to install a bathroom vent fan that vents to the exterior of the house straight through the wall. Step 2 cut the width.

6 pull the wall cap and duct out of the wall. 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. Be sure to work slowly in order to maintain the proper form. Hot metal chips will fly everywhere.

Here s one that claims to come with a circle cutting attachment for 15. Remember that any imperfections to your cutting will be covered by the thimble. If your perimeter holes touch the circle you drew then your cutting the hole will be that much easier. 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.

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. Cut across the contours of the aluminum siding with a radial arm saw. Cut hole in aluminum siding for bathroom vent fan my house has aluminum siding. Sometimes called a spiral saw or rotary cutting tool.

Tons of companies make similar tools. It may not be an obvious choice but fitted with the right blade a circular saw is a great metal cutting tool. Drill pilot holes through the screw holes on the wall cap and through the mounting block siding and wall. Apply a thick bead of silicone adhesive.

It s basically a smallish router and used all the time for cutting holes in drywall shower walls etc. Thick using a ferrous metal cutting blade. While cutting at the width of the aluminum siding make use of straight tin snips. 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.