wallboard thickness

Share this page

Status
Not open for further replies.
N

nottsplasterer

New Member
Hi all, I am starting a job tomorrow, the customer wants me to use an insulated wall board on a patio window wall (internal) but needs it to be as thin as possible can anyone advise me on what is the thinnest size insulated wall board and approx price. Cheers all
 
If you are starting tomorrow, you will have to make do with what your supplier has available.......

Knauf Drywall do a 22mm thick board as its thinnest option.... but you use the thickest possible to give the best thermal performance, not usually the thinnest.... (unless - as I suspect - the client does not have much room in there, or it is to align against a door or window or something...)

measure up, what space is available, the see if you can get a laminate board to suit..... it is to the benefit of the client!
 
I hope you can find somewhere that stocks it now...... It will be on the shelf at our warehouses, so the various distributors, merchants and outlets can get it in.....

good luck mate!
 
There are a few merchants round my way that don't stock insulated boards at all, they get them in from other branches. Travis by me knock out the 22mm boards for £16 something on the account but the list is £21 something + VAT!!!!!
 
Can you dab insulation boards ? Av seen it done before just didnt know if the lads was rough as fewk or it can be done
 
Yes they can be dabbed but the thicker ones are a bugger to get straight if there is a bow in the sheet. Never screwed as well as dabbed .
 
jrplastering said:
you can but they have to be mechanically fixed aswell through the dabs
Click to expand...

I have heard this before but never seen it done. The reason i was given was if there was a fire and the insulation melted, the boards would be dropping every where over the people getting out of the building and firemen.
 
We're dabbing 50mm at the moment. Even though they are stored flat, they're still a bugger to get proper straight on the wall. It is almost like they are sprung. BTW, use Gyproc Thermaline, Knauf schmauf!
 
carlos said:
I have heard this before but never seen it done. The reason i was given was if there was a fire and the insulation melted, the boards would be dropping every where over the people getting out of the building and firemen.
Click to expand...

I reckon the spec I was told was 1 fixing every 1m2 and in every piece/cut.
 
Always had to mechanically fix insulated boasts after dabbing. Yeah, 1 fix/m square.
That was the reason w were told as well.
 
bubbles65 said:
Yeah it's in the bible somewhere :RpS_thumbup:
Click to expand...

cant remember reading that in JB Taylor.............:RpS_confused:
Does mechanical fixing the boards not just pull the boards tight to the wall making it a waste of time get them plumb with the dabs........:RpS_unsure:
 
bubbles65 said:
No cos you wait til the dabs have set :RpS_thumbup:
Click to expand...

lol..dont i feel like a big horses ass..............its still not in the JB Taylor........:RpS_thumbdn:

Does Tha need special fixings or will 75mm drywall screws surfice............:RpS_thumbup:
 
Last edited:
ive always just let them go off then tap and mark the dabs and fix proberly 9 per 8x4 sheet, and just another reason to fix aswell as dab. have you ever tried to pull the insulation off the back of a board........ it dnt take much
 
Knauf make a hammer fixing for this purpose, i use em all the time, just done a job with insulated boards, 50mm insulation on them, just drill through the dabs as been said and bob one in, they are very similar to a frame fixing. You can either knock them in or screw them in, I put mine in with my impact gun found it does a better job. I was told its to give a secondary fixing for fire.
 
Not really my area of expertise - but I would definately add fixings to a dabbed insulated laminate!

call Knauf Technical for further advise - if needed...... 01795424499
 
it is for fire reasons but i also like to think its because they put bugger all glue on the board to stick insulation to board haha
 
jrplastering said:
it is for fire reasons but i also like to think its because they put bugger all glue on the board to stick insulation to board haha
Click to expand...

We ordered some insulated board from our merchents and when it came some numpty had glued the insulation to the white side of the board. Probably thought it'd stick better on the side you skimmed :rolleyes) :RpS_laugh:
 
use a nailable plug type fixing, 2 no per board, mid height and you need 25mm of penetration into the back ground, so add 10mm on for your dab, that gives you board thickness plus 35mm to give you the right fixing length. Thats what I got told when i rang bg technical anyway, but i never see anyone using them at all
 
Status
Not open for further replies.
Top