Abcleads.com BBB Business Review  NAHB member
Call us at
1-800-219-5332


All times are UTC - 5 hours





Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: Foam spray insulation
PostPosted: Thu Aug 18, 2016 6:38 pm 

Joined: Sat Aug 06, 2016 2:58 pm
Posts: 8
Offline
Quick question...do you use low expansion spray foam between the NEW vinyl window and the old frame? How big does the gap have to be before you use the foam?

I keep reading about installers that don't use foam between the new window and the old frame. They instead stuff fiberglass in the gap, which I would think is useless.


Top
 
 

 Post subject: Re: Foam spray insulation
PostPosted: Fri Aug 19, 2016 5:25 am 
User avatar

Joined: Wed Apr 04, 2007 11:21 pm
Posts: 4360
Location: DC Metropolitan Area-Maryland/Virginia/DC
Offline
Gap can be pretty darn small if you have the right tip on the spray foam gun.

Definitely need to use a gun and not a stray if you are working with a tight gap.


Top
 
 
 Post subject: Re: Foam spray insulation
PostPosted: Thu Sep 01, 2016 12:33 pm 

Joined: Fri Mar 11, 2005 3:10 pm
Posts: 249
Location: Twin Cities, Minnesota
Offline
WOW nailed it! If you've never used canned foam before....don't start on your house. The store bought can does not offer much control. You have to learn how to spray and let it expand. The theory is to not have the foam expand out from the gap and onto the window, casing, floor, and window coverings. It's a nightmare believe me!! We use commercial guns with micro tips. You can foam down to 1/16" to two inch gaps easily. But you need a gun that can be turned down enough to control a slower flow. Otherwise bring a lot of drop cloths and paper towels. If it's not expanding much just mist it with a spray bottle of water. This will expedite the expansion process. If you get it all over you'll need Acetone Thinner to clean it up. Scary stuff!
There shouldn't be any installer out there who believes in the stuff in method. It's been proven over and over again that it's a waste of money and it leaks like mad. Plus most installation guidelines require expansion foam. Do it once and do it right! Good Luck!!!


Top
 
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 5 hours


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group