Insulting the hardtop with spray-on foam
JK Super Freak
Joined: Mar 2008
Posts: 1,673
Likes: 3
From: Alberta
Oh wow...when i read this i thought you were thinking of doing what a dude did up here...that was drill little holes at stategic points in the panels on the inside, then spray the foam inside the roof partitions that way...I myself have not found the need to do this, but he did it and you couldn't tell the difference from my roof to his, except he swore it held heat in better
JK Jedi
Joined: Aug 2007
Posts: 5,813
Likes: 0
From: Kenai Peninsula, Alaska
I've read all the threads about affixing styrofoam (and other) insulation to the roof panels of the JK, and done it myself, and experienced the same problems others report: Expansion, and adhesive coming loose under high temperatures.
I've been thinking about using that expanding spray-on foam. I've used it around the house for some construction projects. I know that it bonds PERMANENTLY to ANYTHING, and I know that once dry, it can be carved, shaped, and sanded. I'm thinking: Why not make a cardboard fence around the area I want to insulate, spray it on, let it dry, then belt-sand it flat and smooth. If done carefully it should look decent, but most importantly, I would imagine its performance and trouble-free permanence would be tops.
Has anyone tried this, or does anyone have any thoughts? Like I said, spray it on and that stuff is NEVER coming off, so I'd like opinions and discussion before taking the plunge. Thanks!
I've been thinking about using that expanding spray-on foam. I've used it around the house for some construction projects. I know that it bonds PERMANENTLY to ANYTHING, and I know that once dry, it can be carved, shaped, and sanded. I'm thinking: Why not make a cardboard fence around the area I want to insulate, spray it on, let it dry, then belt-sand it flat and smooth. If done carefully it should look decent, but most importantly, I would imagine its performance and trouble-free permanence would be tops.
Has anyone tried this, or does anyone have any thoughts? Like I said, spray it on and that stuff is NEVER coming off, so I'd like opinions and discussion before taking the plunge. Thanks!
But, what you might consider would be to call a urethane company that sprays it on ceilings and walls of houses. I've watched guys do it before many times, and a guy that is good at it can lay it down pretty darn evenly. Urethane is pretty spendy, but given the size you are talking about, I doubt it would cost that much. Besides, now a lot of urethane companies spray the newer type of urethane that already has a vapor barrier already in the mix. This would be nice. Something to think about anyway and it may be worth the call.
JK Jedi Master
Joined: Nov 2006
Posts: 15,170
Likes: 0
From: .
Here is another option for insulating your hardtop: HotHead Headliners. They install easily, cut the heat and noise tremendously, and are removable. You can see them at www.hotheadheadliners.com. Several members have installed and posted about them here. I am the maker, so if you have any questions I'd be glad to answer them.
Mark
Mark