I just tried using the blue cotton insulation in a flood repair. I was expecting that it would cut a lot like fiberglass, but it was really a hassle to try hacking away at it with my utility knife. I ended up just ripping a lot of it and it didn’t even rip as cleanly as fiberglass. And it seemed to irritate my nose more. I’m lucky I didn’t have much to do or else I would have really been cursing.
What’s the best way to cut this stuff?
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Replies
Take a look at these:
http://www.cepcotool.com/insulknife/
http://www.amazon.com/Insul-Knife-Insulation-Cutting-Tool/dp/B000KVAYVE/ref=sr_1_1?ie=UTF8&s=hi&qid=1201564079&sr=1-1
http://www.amazon.com/STANLEY-CONSUMER-TOOLS-10-113-Insulation/dp/B00002X2IB/ref=sr_1_4?ie=UTF8&s=hi&qid=1201564121&sr=1-4
http://www.amazon.com/Hanson-C-H-03020-Insulation/dp/B000GPAV3K/ref=sr_1_3?ie=UTF8&s=hi&qid=1201564138&sr=1-3
Back in the olden days, before there was light, we used to cut FG on the table saw, haven't tried cotton yet.
I haven't used blue jean batts yet, but a utility knife is a poor tool for cutting any insulation more than a few inches thick - and even then it needs to be compressed with a board.
You can spend $40 for an insulation knife, but I use an old kitchen carving knife that I keep honed to a sharp edge. It works great on batts and because it has a thin flexible blade (12" long) it can also be used for flush cutting excess foam that expands out from around door and window jambs.
Solar & Super-Insulated Healthy Homes
I like you more better (remember, I'm an ignorant conservative) in here RS.
THIS is what the board is about.
Save that polijive for another place. You'll be doing yourself and everyone else a huge favor.
Now, I wonder how that nice Henkel will cut insulation.............[email protected]
A trick for cutting FG is to place the piece on a hard surface (plywood works best), lay a stiff straightedge (plank of wood) on it, press down hard, and cut with a utility knife. I'd think it would work for cotton too.
Am I the only person who cuts fg with scissors? Especially when its still smooshed a bit, you can snip, snip right through it with a good pair of scissors.
Doesn't work of foamboard though..
jt8
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