Insulation For 2' X 3' X 1/4" Gap - Insulation - DIY Chatroom Home Improvement Forum
Advertisement


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

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

Reply
 
Thread Tools Search this Thread
Display Modes
Old 02-14-2016, 11:14 AM   #1
Newbie
 
Join Date: Feb 2016
Posts: 8
Rewards Points: 16
Default

insulation for 2' x 3' x 1/4" gap


I want to insulate the space between my kitchen counter and the exterior wall. It can only be accessed from the top of the counter. The gap is 1/4" wide. Does anybody have a solution?
Bumper1234 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-14-2016, 11:21 AM   #2
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 26,031
Rewards Points: 856
Blog Entries: 41
Default


Closed cell, low expansions, spray foam. Tape off the area on your counter top to avoid any contamination.
Windows on Wash is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-14-2016, 11:43 AM   #3
Newbie
 
Join Date: Feb 2016
Posts: 8
Rewards Points: 16
Default


Thanks for the suggestion. This is uncharted territory for me so I hope you won't mind a couple of more questions. The counter is 3' high and approximately 8' wide. (I said 2' because the counter is screwed to the wall at 2' intervals and I assumed I would be using some kind of solid insulation.) Is spray the solution for a space this large? Will the spray go down to floor level and then slowly rise?
Bumper1234 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-14-2016, 01:03 PM   #4
Member
 
Join Date: Nov 2015
Location: Maine
Posts: 10,667
Rewards Points: 136
Default


No, the spray foams up too quickly to get very far down. I have no experience with it, but have read there are pour in slow rise foams. Your Google would be as good as mine. But, once in there I would hate to remove those cabinets.

There are also sheets of thin insulation, but it would not be a tight fit.

Let me ask, why?

Bud
Also, there is perlite or vermiculite that can be poured in, as long as there are no holes where it can leak out.

Last edited by Bud9051; 02-14-2016 at 01:05 PM. Reason: addition
Bud9051 is online now   Reply With Quote
Old 02-14-2016, 03:40 PM   #5
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 37,111
Rewards Points: 1,862
Default


Very strange question.
Never once heard of anyone insulating a counter.
Why is the outside wall not insulated enough?
Why is there a 1/4" gap?
A picture would be a big help.
__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
joecaption is offline   Reply With Quote
Old 02-14-2016, 05:35 PM   #6
Newbie
 
Join Date: Feb 2016
Posts: 8
Rewards Points: 16
Default


This is an old house in downtown Toronto. Built in 1880. The outside wall abuts the neighbor's outside wall so it is inaccessible. It was never insulated and to do so would require a lot of demolition.

Our kitchen counter was screwed to the drywall but there is a gap between the back of the counter and the drywall, probably because the outside wall isn't level.

I've attached a picture. The gap is between the top of the counter and the rear wall.
Attached Thumbnails
insulation for 2' x 3' x 1/4" gap-img_2608.jpg  
Bumper1234 is offline   Reply With Quote
Old 02-14-2016, 06:45 PM   #7
Member
 
Join Date: Nov 2015
Location: Maine
Posts: 10,667
Rewards Points: 136
Default


I'm not sure there would be a big advantage of filling that gap vs just sealing the top. Air is actually a reasonable insulator and the transfer of heat from your cabinets to that outside wall through that gap is slow due to needing convection.

I did a little reading on pour in foam insulations and they warn about expansion. Plus, it is far too cold to be installing foam other than rigid.

Perlite is still a good option as it would fill completely and cleans up with a vacuum. Here's a link for reading: https://www.perlite.org/industry/ins...n-perlite.html

Bud
Bud9051 is online now   Reply With Quote
Old 02-14-2016, 09:00 PM   #8
Newbie
 
Join Date: Feb 2016
Posts: 8
Rewards Points: 16
Default


I need the space filled because the dishwasher is under the counter and it freezes up in extremely cold weather. Perlite looks promising. Thanks for the suggestion.
Bumper1234 is offline   Reply With Quote
Old 02-14-2016, 10:12 PM   #9
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 26,031
Rewards Points: 856
Blog Entries: 41
Default


I would not use the foam in that long a gap. Based on your first post, I was under the impression you were just sealing the gap at the counter stop.

Stop the air flow and that will probably give you most of the improvement you are looking for like Bud mentioned.
Windows on Wash is offline   Reply With Quote
Old 02-15-2016, 08:06 AM   #10
Newbie
 
Join Date: Feb 2016
Posts: 8
Rewards Points: 16
Default


thanks. As I mentioned earlier I need to fill the entire space so perlite sounds like the best bet.
Bumper1234 is offline   Reply With Quote
Old 02-15-2016, 08:27 AM   #11
Exterior Construction
 
Windows on Wash's Avatar
 
Join Date: Aug 2011
Location: Washington DC Metro Area (VA, MD, DC)
Posts: 26,031
Rewards Points: 856
Blog Entries: 41
Default


Should work.

I would still cap the top for air seal as well.
Windows on Wash is offline   Reply With Quote
Old 02-15-2016, 08:29 AM   #12
Newbie
 
Join Date: Feb 2016
Posts: 8
Rewards Points: 16
Default


Will do. thanks.
Bumper1234 is offline   Reply With Quote
Old 02-15-2016, 08:11 PM   #13
Registered User
 
Join Date: Mar 2009
Posts: 11,730
Rewards Points: 526
Default


If you are insulating that gap, it may be the "tip of the iceberg" because if the counter-top installer couldn't scribe it to fit the out-of-plane wall (wavy), that tells us the cabinets are also pulled away to line them with the worst cabinet base unit (closest to kitchen). You may need to buy a lot... add some foam outlet covers as well as insulation board (not foam) behind the dishwasher.

Gary
__________________
If any ads are present below my answer or words underlined/colored, I do not condone/support/use the product or services listed/linked to, they are there without my consent.
17,000 dryer fires a year, when did you last clean the inside of the dryer near motor or the exhaust ducting?
Gary in WA is offline   Reply With Quote
Old 02-16-2016, 10:00 AM   #14
Newbie
 
Join Date: Feb 2016
Posts: 8
Rewards Points: 16
Default


Thanks, Gary. Do they make insulation board thin enough to fit into a 1/4" gap? I haven't been able to find any
Bumper1234 is offline   Reply With Quote
Old 02-19-2016, 11:33 PM   #15
Registered User
 
Join Date: Mar 2009
Posts: 11,730
Rewards Points: 526
Default


I added extra fiberglass around mine, when I installed it in my island. Helped a lot. It can be thicker than 1/4" behind the unit... just caulk the countertop joint after using some backer rod first.

Gary
__________________
If any ads are present below my answer or words underlined/colored, I do not condone/support/use the product or services listed/linked to, they are there without my consent.
17,000 dryer fires a year, when did you last clean the inside of the dryer near motor or the exhaust ducting?
Gary in WA is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


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
Insulation question for vaulted home Talgonadia Insulation 3 08-22-2012 06:06 AM
?'s about foil-faced "bubble wrap" insulation badger73 Insulation 5 06-25-2012 05:09 AM
Several Insulation Quotes, Big Decisions to make knotquiteawake Insulation 2 05-04-2012 11:16 AM
Garage Insulation yamster Insulation 0 07-01-2011 01:30 PM
Rafter Vents and Insulation nofx1981 Roofing/Siding 15 03-10-2010 08:14 PM




Top of Page | View New Posts