Great Stuff Fireblock - Insulation - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Insulation

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 03-19-2012, 12:45 PM   #1
Newbie
 
Join Date: Oct 2011
Location: Georgia
Posts: 6
Rewards Points: 10
Default

Great Stuff Fireblock


I'm sealing gaps around my furnace vent that goes from my garage up through my house to the roof. I was going to use fire caulk for this but the gaps are a little big for that. Does anybody know if 'Great Stuff Fireblock Foam' sealant would be a good for an application like this? It doesn't really state on the can that it is for high temperatures like the caulk does. If not, does anybody have another suggestion? Thanks!

Advertisement

thedudeabides! is offline   Reply With Quote
Old 03-19-2012, 12:56 PM   #2
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 7,151
Rewards Points: 3,318
Default

Great Stuff Fireblock


Metal coil + the caulking.

FYI, that caulking is very heavy and viscous. You can lay down a very good sized bead and cover a bunch but don't under by ad the yield is not that great on the tubes.

Advertisement

Windows on Wash is online now   Reply With Quote
Old 03-30-2012, 04:01 PM   #3
Mold!! Let's kill it!
 
Join Date: Feb 2008
Location: Central Pennsylvania
Posts: 2,849
Rewards Points: 2,012
Default

Great Stuff Fireblock


Fire caulk and fire stop foam materials are not designed for sustained high heat. They are made to stop fire. The foam will char on the surface when exposed to fire. The char then protects the rest of the foam undeneath from the effects of the fire. Fire caulk can work the same way or it can expand under high temperatures to fill a void and prevent fire penetration. You don't want to use products like that in a situation where they will be constantly exposed to high heat. Fire stop sealants are not really good for exposure to the weather either.You need a high temperature sealant. Many of these are silicones and are designed for sealing exhaust stacks through roofs. A gas furnace sales place should have some.

Last edited by Maintenance 6; 03-30-2012 at 04:04 PM.
Maintenance 6 is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
My Great Attic Renovation GFPC85 General DIY Discussions 1 02-09-2011 05:21 PM
Great stuff or equivalent product for cold weather? Red Squirrel Building & Construction 11 01-21-2011 11:19 AM
flashing: how to tell the good stuff? jeauxbleaux Roofing/Siding 6 08-21-2009 11:24 PM
Black stuff under thinset? Osiris Flooring 1 04-04-2009 05:09 PM
Bookcases in a Great Room divadoc Interior Decorating 7 01-17-2008 09:02 PM




Top of Page | View New Posts