Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Drywall & Plaster

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 03-21-2013, 11:00 AM   #1
Newbie
 
Join Date: Mar 2013
Location: Switzerland
Posts: 14
Rewards Points: 10
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Hi all,

I am building a wine cellar in a basement room. Walls need insulation which I will do with 7 or 8 cm of a aluminum faced polyurethane insulation. The insulation can be directly glued onto the existing cinder block and concrete walls, with joints sealed.

I am looking for ways to cover the walls and would like to keep the thickness to a minimum.

Can I tile directly onto the polyurethane insulation?

Thanks,

Dave M

dave_in_gva is offline   Reply With Quote
Old 03-21-2013, 11:03 AM   #2
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 27,518
Rewards Points: 4,152
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Simple ansewer is no.

joecaption is offline   Reply With Quote
The Following User Says Thank You to joecaption For This Useful Post:
dave_in_gva (03-21-2013)
Old 03-21-2013, 11:07 AM   #3
Newbie
 
Join Date: Mar 2013
Location: Switzerland
Posts: 14
Rewards Points: 10
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Tx Joe, short and sweet although I'm curious why not - is it an adhesion problem.

Any thoughts on options for me that are fast and result in a thin covering for the walls here?

Dave
dave_in_gva is offline   Reply With Quote
Old 03-21-2013, 11:12 AM   #4
Member
 
Join Date: Jan 2012
Location: Pacific North west
Posts: 1,311
Rewards Points: 626
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


so you want to glue on to foam board 45+ pounds of weight? think for a moment. glue is just a adhesive to lessen the amount of screws or nails you will use on the studs. your going to have to frame in 2x4 walls and place the sheetrock on those. if you do it the way you described you will have a fat mess on your hands.

Last edited by Nailbags; 03-21-2013 at 11:15 AM.
Nailbags is offline   Reply With Quote
Old 03-21-2013, 11:21 AM   #5
Newbie
 
Join Date: Mar 2013
Location: Switzerland
Posts: 14
Rewards Points: 10
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Thanks, but I don't see why the walls would come down.

The foam insulation is fine to be glued directly to the concrete and sealed. If I use an adhesive specifically formulated for the insulation and use that to adhere the drywall to the foam, why should anything come down?

Is your reasoning that there would be an adhesive failure, an expansion/contraction issue, what?
dave_in_gva is offline   Reply With Quote
Old 03-21-2013, 11:26 AM   #6
Newbie
 
Join Date: Mar 2013
Location: Switzerland
Posts: 14
Rewards Points: 10
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Also just to add, there are no studs. I live in Switzerland and they don't do timber frame houses here. Places are built in concrete and the basement I am building is is reinforced concrete and cinder block.

I get the weight argument a bit, but firstly I would be going with thin panels here (1 cm or 1.25 cm), so although I am not sure offhand what the weight of each panel will be it's unlikely to be huge.

D
dave_in_gva is offline   Reply With Quote
Old 03-21-2013, 11:50 AM   #7
Member
 
Join Date: Jan 2012
Location: Pacific North west
Posts: 1,311
Rewards Points: 626
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


you will have failure with the glue. you need to use wood walls yes it might be expensive to do. if you don't do it right the first time when are you going to have time to go back and do it right. Just remember a 4x8 sheet of drywall weighs 48 pounds or 105.6 kg glue alone will not work.
Nailbags is offline   Reply With Quote
Old 03-21-2013, 11:52 AM   #8
Member
 
Join Date: Jul 2009
Location: SW Ohio
Posts: 407
Rewards Points: 258
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Go to a local hardware store and pick up a piece of thin drywall and feel the weight - then imagine the only thing holding it in place is glue. If this is for a wine cellar you're risking that drywall falling onto your wine bottles. That's an expensive, messy, and highly likely risk.
spaceman spif is offline   Reply With Quote
Old 03-21-2013, 01:07 PM   #9
"You can do anything"-Mom
 
brockmiera's Avatar
 
Join Date: Oct 2012
Location: Littleton, CO
Posts: 724
Rewards Points: 500
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


I just had to remove some 2" XPS from a section of my basement which had been glued with PL300 foam board glue. I had made a 1'x1' grid when I stuck it to the wall. Lets just say it came down surprisingly easy.

What about using some 1x3's on the flat in front of the foam board. Use some tapcon's to secure them to to thru the foam board and into the CMU walls. Then you can use standard dywall screws to attach your drywall.
brockmiera is offline   Reply With Quote
Old 03-22-2013, 01:01 PM   #10
Newbie
 
Join Date: Mar 2013
Location: Switzerland
Posts: 14
Rewards Points: 10
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Alright, so going with the logic here let's say I go with 2cm furring and I end up screwing my drywall onto that.

I've got two places I can put it:

  1. Attach furring directly onto CMU, then glue 7 cm foam, then drywall with 8.5 or 9 cm drywall screws.
  2. Glue 7cm foam direct to CMU, attach 2 cm furring through foam into CMU, then screw drywall with 3 cm drywall screws.
Option 1 puts an airspace between CMU and the insulation which would be convenient for passing some wiring I will need to run. I could also fill in the voids between the furring for additional insulation value. Downside could be longer length of the drywall screws and greater (but not necessarily important) shear forces because of this.

Option 2 puts the airspace to the interior (wine cellar) side of my insulation. That may be a bit more of a hassle for wiring in some of the electrical boxes as I'd have to reroute them back a bit into the foam insulation. Drywall screw length would obviously be standard and no shear force increase on the drywall screw....although seems to me I cant escape increased shear force in the total system with either option as putting the furring on the interior side of the foamboards means the fastener holding the furring to the CMU is longer and ultimately all the weight is hanging off that.

What I don't like in either option is thermal bridging. I want to get the maximum insulation value in this space while eating up a minimum of the interior volume.

Other thoughts, suggestions welcome.

Dave
dave_in_gva is offline   Reply With Quote
Old 03-22-2013, 01:36 PM   #11
Member
 
Join Date: Nov 2012
Location: Western Washington, U.S.A.
Posts: 207
Rewards Points: 156
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


For minimum use of space your best option is to attach the foam board directly to the concrete with glue and seal the seams. Then add thin furring strip on top of the foam with the strips secured to the concrete through the foam. This gives you a surface to securely attach your drywall and it helps hold your foam panels to the wall.
I don't know if it is available where you live, but there is a foam board product that has channels pre-cut into it that could accept the furring strips and eliminate the air space between your foam and drywall if that is really a problem for you.

If you want to add electrical you would need to cut into the foam. This can be done with most wood cutting tools, or using special heat tools.
dftc is online now   Reply With Quote
Old 03-22-2013, 07:17 PM   #12
Newbie
 
Join Date: Mar 2013
Location: Switzerland
Posts: 14
Rewards Points: 10
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Thanks, that's sensible and I've seen this construction method talked about before on the net.

One thing I've been wondering about - and call me crazy if you have to - but I've been wondering whether and why furring strips need to extend vertically or horizontally as far as they do.

When I see images of applied furring strips they are not even locking into a horizontal member across the top and bottom of a wall, they're just vertical strips starting somewhere close to the bottom of the panel and ending somewhere close to the top.

But if you are only using that piece of wood to a) help hold a light piece of foam that is already glued to the concrete substrate and b) provide 2 cm of penetration into wood for a drywall screw every 60 cm, why does the furring strip need to be a long strip? Why couldn't one use a drill saw and cut out, say 6 cm diameter discs from 2 cm thick plywood and use those to secure the foam and then serve as a base to attach the drywall?

I realize there's more work but I don't mind doing the work and I dont see any structural reason why a 1 x 3 has to be say 8 feet tall when it is only getting tapped into by a couple of drywall screws every 2 feet. Downsizing the furring strip to a furring disc would give me less thermal bridging and allow me to build out the insulation another 2 cm. In fact I could even go with 2 cm thicker foam panels and simply use a drill saw to bore out a 2 cm recess in the front of the panels on 60 cm centres, insert the plywood discs, glue the assembly to the concrete, drill out and drive a mechanical fastener to fasten the plywood discs to the CMU wall, then glue and screw my drywall directly onto the foam, screwing onto those 6 cm discs on 60 cm centres.

Is there something inherently wrong with this strategy?

Dave M
dave_in_gva is offline   Reply With Quote
Old 03-22-2013, 08:29 PM   #13
retired union carpenter
 
Join Date: Nov 2011
Location: PA
Posts: 323
Rewards Points: 250
Send a message via Yahoo to coupe
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


why cant you use fluted cncrete nails driven through the drywall and foam into the block? we did it all the time. I can show you a nursing home in Lebonon PA U.S.A. thats been hanging that way since 1972.
__________________
as always, just my thoughts
good luck....coupe/Larry
take what helps? ignore the rest.
coupe is offline   Reply With Quote
Old 03-22-2013, 09:27 PM   #14
Member
 
Join Date: Jul 2009
Location: SW Ohio
Posts: 407
Rewards Points: 258
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


Quote:
Originally Posted by coupe View Post
why cant you use fluted cncrete nails driven through the drywall and foam into the block? we did it all the time. I can show you a nursing home in Lebonon PA U.S.A. thats been hanging that way since 1972.
That's something I was curious about. When you pierce the foam like that, aren't you creating a path for the moisture to travel along the nail surface and into the wood?
spaceman spif is offline   Reply With Quote
Old 03-22-2013, 09:54 PM   #15
retired union carpenter
 
Join Date: Nov 2011
Location: PA
Posts: 323
Rewards Points: 250
Send a message via Yahoo to coupe
Default

Wine cellar walls: can I glue drywall directly onto polyurethane insulation?


no wood through drywall through foam. straight into block wall, dimple nails in as in wood finish as usual. I'm no good at the metric system have to figure length of nails 3/4" into block

__________________
as always, just my thoughts
good luck....coupe/Larry
take what helps? ignore the rest.

Last edited by coupe; 03-22-2013 at 09:59 PM. Reason: spelling
coupe is offline   Reply With Quote
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 quandary (knee walls with photo) kevabar Insulation 5 01-10-2013 11:01 PM
Cellulose Insulation Blowing In Walls nhoj Insulation 6 12-11-2012 11:00 PM
Insulating walkout basement wall bestways Insulation 18 12-04-2012 06:48 PM
How To Install Rigid Foam Insulation on Concrete earthad1 Building & Construction 9 10-26-2010 10:49 AM
Loose Fill Insulation in walls HooKooDooKu Building & Construction 2 01-18-2010 09:03 PM




Top of Page | View New Posts

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