Russell griffiths Posted November 30, 2019 Share Posted November 30, 2019 Morning all. I need an airtight tape to cover the gap between my ceiling pir insulation and the inside wall face. The problem is my walls are EPS insulation and it’s this I’m finding hard to stick to, anybody found anything that likes to stick to eps. Link to comment Share on other sites More sharing options...
dpmiller Posted November 30, 2019 Share Posted November 30, 2019 I'll check for you today on some EPS, but the Siga stuff we're using seems to stick like sh*t on a blanket, to everything... 1 Link to comment Share on other sites More sharing options...
scottishjohn Posted November 30, 2019 Share Posted November 30, 2019 a thick coat of pva or emulsion on eps and let it dry -so tape of choce will then stick to that ? 1 Link to comment Share on other sites More sharing options...
Vijay Posted November 30, 2019 Share Posted November 30, 2019 7 minutes ago, scottishjohn said: a thick coat of pva or emulsion on eps and let it dry -so tape of choce will then stick to that ? Did you get the liquid membrane paint? you could try painting a strip of that to stick to Link to comment Share on other sites More sharing options...
nod Posted November 30, 2019 Share Posted November 30, 2019 Jaffa tape is as good as anything that I’ve ever used I use it for masking up for external render We stick sheeting onto masonry It often exposed to the elements for a week Fiver a roll Link to comment Share on other sites More sharing options...
nod Posted November 30, 2019 Share Posted November 30, 2019 Just now, nod said: Jaffa tape is as good as anything that I’ve ever used I use it for masking up for external render We stick sheeting onto masonry It often exposed to the elements for a week Fiver a roll 1 Link to comment Share on other sites More sharing options...
scottishjohn Posted November 30, 2019 Share Posted November 30, 2019 (edited) 1 hour ago, nod said: Jaffa tape is as good as anything that I’ve ever used I use it for masking up for external render We stick sheeting onto masonry It often exposed to the elements for a week Fiver a roll I would be nervous at the long term adhesion of tape to EPS without a primer coat . one novel idea car plastic stone chip --spray joints with that --its water proof and never comes off and is water based https://www.amazon.co.uk/Gravitex-Professional-Protector-Application-Protection/dp/B01M1K65KC/ref=asc_df_B01M1K65KC/?tag=bingshoppinga-21&linkCode=df0&hvadid=&hvpos=&hvnetw=o&hvrand=&hvpone=&hvptwo=&hvqmt=e&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=&hvtargid=pla-4584413738286283&psc=1 try some on inside something like a box made from eps +FILL WITH WATER or this one aerosol cans https://www.ebay.co.uk/itm/Black-Stonechip-Stone-Chip-Paint-Coating-Underbody-Car-Truck-Van-500ml-x-4-CANS/223463894112?hash=item34077c6c60:g:2W4AAOSw4ARcnVuH no tape needed then Edited November 30, 2019 by scottishjohn Link to comment Share on other sites More sharing options...
Declan52 Posted November 30, 2019 Share Posted November 30, 2019 I used this stuff to stick the airtightness tape to my block work and the pir on the ceiling. https://passivehousesystems.co.uk/product/gerband-fortax-6400-airtight-sealant/ A good bead along the edge then push the tape onto it. It's flexible so will move as the different materials move. A word of warning though don't get it on your hair as it doesn't come off without a razor or scissors. 1 Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 30, 2019 Author Share Posted November 30, 2019 5 hours ago, scottishjohn said: a thick coat of pva or emulsion on eps and let it dry -so tape of choce will then stick to that ? Tried a coat of bitumen based waterproofing liquid, the foil tape didn’t stick well to this, but I haven’t tried any better tapes yet apart from the cheap nasty aluminium stuff. Link to comment Share on other sites More sharing options...
dpmiller Posted November 30, 2019 Share Posted November 30, 2019 The Siga Sicrall sticks well enough to pull individual beads out of the EPS. 2 1 Link to comment Share on other sites More sharing options...
Russell griffiths Posted November 30, 2019 Author Share Posted November 30, 2019 Smashing job, thanks for all the replies. Link to comment Share on other sites More sharing options...
scottishjohn Posted November 30, 2019 Share Posted November 30, 2019 (edited) 6 hours ago, Russell griffiths said: Tried a coat of bitumen based waterproofing liquid, the foil tape didn’t stick well to this, but I haven’t tried any better tapes yet apart from the cheap nasty aluminium stuff. think that will not work well over time bitumen based could shrink as I suspect the bitumen part evaporates and glue probably will react with it Edited November 30, 2019 by scottishjohn Link to comment Share on other sites More sharing options...
Onoff Posted November 30, 2019 Share Posted November 30, 2019 Stickiest tape I've found is probably the tape that comes with the shower tanking kit. Link to comment Share on other sites More sharing options...
CC45 Posted December 2, 2019 Share Posted December 2, 2019 On 30/11/2019 at 17:18, dpmiller said: The Siga Sicrall sticks well enough to pull individual beads out of the EPS. I used this - just fantastic Link to comment Share on other sites More sharing options...
scottishjohn Posted December 3, 2019 Share Posted December 3, 2019 https://www.siga.swiss/global_en/catalog/dockskin/dockskin primer required for some surfaces to use with the tape surely nudura can advise on correct tape for EPS Link to comment Share on other sites More sharing options...
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