Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Building & Construction


Thread Tools Search this Thread Display Modes
Old 03-22-2010, 01:03 PM   #1
Join Date: Mar 2010
Posts: 2
Rewards Points: 10

2X8 rafter high R-value

Need a little direction here:

2x8 ceiling joist in a bonus room above a garage, located in Michigan.
want the highest R-value without building ceiling down.

was looking at closed cell spray foam.
--will 2 pound density break away over time (to rigid?)
--should i get 1/2 pound density?

Should i do splash and dash?
-- or will that create 2 vapor barriers?

seems like everyone has their own idea on rafter baffles with spray foam!
-- what does the roof shingle manufacturers have to say?

any other ideas???

Thanks for your help in advanced.

newmanab is offline   Reply With Quote

spray foam

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Rafter Ties on Vaulted Ceiling timsgills Building & Construction 2 01-07-2010 04:02 PM
Hunter Ceiling Fan: Won't do high speed ConstantChange Electrical 4 09-28-2009 04:00 PM
Moving Attic Access -- Same Rafter or Different ?? wrldruler Carpentry 1 10-19-2008 07:03 PM
need some rafter help feralfreak Carpentry 5 07-30-2008 07:48 AM
rafter questions - structural rtoni Carpentry 11 09-13-2007 06:40 AM

Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.