Air Tight Tape Around Drylining

Rugger13

Hi Guys,

Im a newbie to the forum..I was hoping some of you guys would be able to give me some advise

My plasterer has given the inside of my external walls a coat of sand/cement mix. On top of this my 62.5mm insulated plasterboard is fitted. My question is, should I seal the joints between the boards with air tightness tape? Or will it be overkill with the sand/cement mix already done? (I have sealed around the windows with the tape).

Also, if the tape is applied..will it be harder for the plasterer to give it a smooth skim?

Thanks in advance for your help!

tred

Rugger13 wrote: »

Hi Guys,

Im a newbie to the forum..I was hoping some of you guys would be able to give me some advise

My plasterer has given the inside of my external walls a coat of sand/cement mix. On top of this my 62.5mm insulated plasterboard is fitted. My question is, should I seal the joints between the boards with air tightness tape? Or will it be overkill with the sand/cement mix already done? (I have sealed around the windows with the tape).

Also, if the tape is applied..will it be harder for the plasterer to give it a smooth skim?

Thanks in advance for your help!

they use scrim tape to allow the skim to stick. most of the air tight tapes today don't work well with mortar direct on them. I have never seen that done before. the sand cement under the board is sealing all for you.

Rugger13

Thanks Tred!

MicktheMan

Don't forget to tape the window/door frames to the wall reveals as well.:)

fclauson

and do you airtight test before the board go up - you will never find the leaks if there are any once up

additionally do all your chasing/socket/penetrations and make sure they are all sealed (via air test) before proceeding

ditto with your membrane in the roof - do it now while you can still see everything

Rugger13

Yes Mick the windows/door frames have been taped to the wall reveals, thanks!

Rugger13

Hi fclauson, I was told that the airtight test cannot be done before second fix plumbing has been complete (water in the toilets)?

fclauson

You can do it earlier - but you have to prepare e.g. tape over pipes etc - leaving it that late leave very little scope for correction. At first fix you still have lots of access.

Actually - what I advocate is to do at least 2
1 at first fix and 1 at second

if the first one raises a lot of issues then do a second one once remedial work is complete before proceeding

Rugger13

Great, thanks for the tip Fclauson!

MicktheMan

fclauson wrote: »

You can do it earlier - but you have to prepare e.g. tape over pipes etc - leaving it that late leave very little scope for correction. At first fix you still have lots of access.

Actually - what I advocate is to do at least 2
1 at first fix and 1 at second

if the first one raises a lot of issues then do a second one once remedial work is complete before proceeding

+1