Taping onto concrete blocks

[CC45]

does anyone know of a technique to get airtight tape to stick to concrete blocks?  I'm guessing they need painting with some sort of paint that the tape sticks to...  Any info would be great.

 

Cheers

 

CC

[A_L]

11 minutes ago, CC45 said:

I'm guessing they need painting with some sort of paint that the tape sticks to... 

 

Each tape manufacturer generally has their own 'airtight primer'

 

e.g. https://proclima.com/products/bonding-agents/primer/tescon-primer-rp

 

[Oz07]

I used a mastic to glue membrane to the blocks. Wouldn't replace tape in all situations though

[Declan52]

This is what I used. You put the split tape on your window/door frame then peel the back of the tape and run a good bead along the block and push the tape into the glue.

 

Do not and I can't stress this enough get it in your hair. It's a scissors job to get it out.

https://passivehousesystems.co.uk/product/gerband-fortax-6400-airtight-sealant/

[craig]

Primer, prime the area and then the self adhesve tapes will stick. No primer, tapes will peel (even with a mastic).

[SuperJohnG]

On 22/11/2020 at 21:14, Declan52 said:

Do not and I can't stress this enough get it in your hair. It's a scissors job to get it out.

There's a man who sounds like he is speaking from experience! ?

[Declan52]

2 minutes ago, SuperJohnG said:

There's a man who sounds like he is speaking from experience! ?

Yep. Didn't notice what was happening when I was taping the roof windows and ended up with a fair amount on the back of my head. After a few washes took none of it off it escalated to the scissors. 

[jfb]

this sticks very well onto blocks and can then be rendered over

 

https://www.ecomerchant.co.uk/pro-clima-contega-solido-sl.html