Air Seal Attic - Drywall And Top Plate - General DIY Discussions - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > DIY Forum > General DIY Discussions

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

Like Tree1Likes
  • 1 Post By Dave Sal
Reply
 
Thread Tools
Display Modes
Old 11-22-2018, 12:09 PM   #1
Newbie
 
Join Date: Nov 2018
Posts: 2
Rewards Points: 4
Default

Air seal attic - Drywall and top plate


I am working adding insulation to the attic. Here is what I have.

1. About 3 inches of brown insulation stuff. It must be from the day it was built in 1979
2. Living room has aluminium foil faced top plate. Kitchen has normal top plate.
3. Gap between drywall and top plate is not sealed.

Can I use siliconized acrylic latex caulk to seal the gap ?
Can I put faced batt insulation over aluminium foil top plate ?

Location : Chicago, IL

Thanks
VSK
attic_leak is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-22-2018, 12:45 PM   #2
retired framer
 
Join Date: Jun 2017
Location: Fraser Valley BC Canada
Posts: 31,299
Rewards Points: 6,256
Default

Re: Air seal attic - Drywall and top plate


Quote:
Originally Posted by attic_leak View Post
I am working adding insulation to the attic. Here is what I have.

1. About 3 inches of brown insulation stuff. It must be from the day it was built in 1979
2. Living room has aluminium foil faced top plate. Kitchen has normal top plate.
3. Gap between drywall and top plate is not sealed.

Can I use siliconized acrylic latex caulk to seal the gap ?
Can I put faced batt insulation over aluminium foil top plate ?

Location : Chicago, IL

Thanks
VSK
Can you post some pictures?
Nealtw is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-22-2018, 01:21 PM   #3
Newbie
 
Join Date: Nov 2018
Posts: 2
Rewards Points: 4
Default

Re: Air seal attic - Drywall and top plate


pics with aluminium foil, without aluminium foil, current insulation and joist height.
Attached Thumbnails
Air seal attic - Drywall and top plate-img_20181122_121440-1-.jpg   Air seal attic - Drywall and top plate-img_20181122_121455-1-.jpg   Air seal attic - Drywall and top plate-img_20181122_121510-1-.jpg   Air seal attic - Drywall and top plate-img_20181122_121522-1-.jpg  
attic_leak is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 11-22-2018, 01:44 PM   #4
retired framer
 
Join Date: Jun 2017
Location: Fraser Valley BC Canada
Posts: 31,299
Rewards Points: 6,256
Default

Re: Air seal attic - Drywall and top plate


Usually those cracks between wood and dry wall are covered with another 2x4 or 2x6 that we call drywall backing .
If the seams were filled on the other side you would not expect an air leak, but caulking it would not hurt either. I am not sure the best caulk for that, Bud should be along with that info.
Hope you are also looking at venting.
Nealtw is online now   Reply With Quote
Old 11-22-2018, 01:58 PM   #5
Member
 
Dave Sal's Avatar
 
Join Date: Dec 2012
Location: Chicago, Illinois
Posts: 2,492
Rewards Points: 366
Default

Re: Air seal attic - Drywall and top plate


Not an answer to your question but thought I'd mention it anyway. My house was also built in 1979 and I had about the same amount of blown in insulation as you. After a couple of years I added R-19 rolls across the joists and cut my heating bill in half the next winter.
Nealtw likes this.
Dave Sal is offline   Reply With Quote
Old 11-23-2018, 09:26 AM   #6
Member
 
Join Date: Jan 2018
Posts: 285
Rewards Points: 4
Default

Re: Air seal attic - Drywall and top plate


Are the gaps big enough to seal with spray foam? Off the shelf caulk will shrink on gaps bigger than 3/16".
The batt insulation is a very good idea. More of a barrier to cold.

Sent from my VS988 using Tapatalk
t.carpenter00 is offline   Reply With Quote
Sponsored Links
Advertisement
 
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





Top of Page | View New Posts