Sticky, sticky tape required

[Russell griffiths]

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. 

[dpmiller]

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...

[scottishjohn]

 a thick  coat of pva or emulsion  on eps and let it dry -so tape of choce will then stick to that ?

 

[Vijay]

  On 30/11/2019 at 08:27, scottishjohn said:

 a thick  coat of pva or emulsion  on eps and let it dry -so tape of choce will then stick to that ?

 

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Did you get the liquid membrane paint? you could try painting a strip of that to stick to

[nod]

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 

[nod]

  On 30/11/2019 at 08:35, 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 

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[scottishjohn]

  On 30/11/2019 at 08:35, 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 

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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

[Declan52]

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.

[Russell griffiths]

  On 30/11/2019 at 08:27, scottishjohn said:

 a thick  coat of pva or emulsion  on eps and let it dry -so tape of choce will then stick to that ?

 

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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. 

[dpmiller]

The Siga Sicrall sticks well enough to pull individual beads out of the EPS.

[Russell griffiths]

Smashing job, thanks for all the replies. 

[scottishjohn]

  On 30/11/2019 at 13:59, 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. 

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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

[Onoff]

Stickiest tape I've found is probably the tape that comes with the shower tanking kit.

[CC45]

  On 30/11/2019 at 17:18, dpmiller said:

The Siga Sicrall sticks well enough to pull individual beads out of the EPS.

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I used this - just fantastic

[scottishjohn]

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