Thorfun Posted April 16, 2023 Share Posted April 16, 2023 in the basement when I put down PIR for under the screed I taped it with silver tape before putting the DPM down. now on the ground floor I'm using EPS for under the screed, 2 x layers of 50mm EPS100. what is a good tape for EPS? Link to comment Share on other sites More sharing options...
JohnMo Posted April 16, 2023 Share Posted April 16, 2023 Do you need tape? A polythene sheet over the whole lot will stop any screed getting under and lifting it up. Link to comment Share on other sites More sharing options...
Thorfun Posted April 16, 2023 Author Share Posted April 16, 2023 Just now, JohnMo said: Do you need tape? A polythene sheet over the whole lot will stop any screed getting under and lifting it up. that's a good question! I was told to tape the PIR so just figured I'd tape the EPS as well. I like to give the impression of doing things properly. Link to comment Share on other sites More sharing options...
JohnMo Posted April 16, 2023 Share Posted April 16, 2023 I was good and taped all my PIR joints, and covered in a polythene sheet, but on reflection I have no idea why I taped it. All the gaps were already filled with expanding foam and cut back. Link to comment Share on other sites More sharing options...
Thorfun Posted April 16, 2023 Author Share Posted April 16, 2023 17 minutes ago, JohnMo said: I was good and taped all my PIR joints, and covered in a polythene sheet, but on reflection I have no idea why I taped it. All the gaps were already filled with expanding foam and cut back. belt and braces? but also, how do you know things wouldn't have gone wrong if you didn't tape the joints? unless you do one floor with taping and another without you'd never know. Link to comment Share on other sites More sharing options...
saveasteading Posted April 16, 2023 Share Posted April 16, 2023 58 minutes ago, Thorfun said: how do you know things wouldn't have gone wrong When it goes wrong , it goes very wrong. Seen it once and it won't happen again. You did the right thing. Link to comment Share on other sites More sharing options...
Thorfun Posted April 16, 2023 Author Share Posted April 16, 2023 7 minutes ago, saveasteading said: When it goes wrong , it goes very wrong. Seen it once and it won't happen again. You did the right thing. And I’d like to do the right thing again this time! Just need to know what’s the best tape to use for EPS! 😂 Link to comment Share on other sites More sharing options...
nod Posted April 16, 2023 Share Posted April 16, 2023 I wouldn’t bother taping But if your looking for something that will stick and stay stuck Jaffa tape Five quid for 25 meters 1 Link to comment Share on other sites More sharing options...
Thorfun Posted April 16, 2023 Author Share Posted April 16, 2023 4 minutes ago, nod said: I wouldn’t bother taping But if your looking for something that will stick and stay stuck Jaffa tape Five quid for 25 meters Would foaming any gaps be good enough? And do you mean gaffa tape? Or is Jaffa tape a thing? (Checking Google now!) Link to comment Share on other sites More sharing options...
Thorfun Posted April 16, 2023 Author Share Posted April 16, 2023 Well will you look at that. It is a thing! https://www.sheetplastics.co.uk/jaffa-tape-50mm-x-25m Link to comment Share on other sites More sharing options...
nod Posted April 16, 2023 Share Posted April 16, 2023 7 minutes ago, Thorfun said: Would foaming any gaps be good enough? And do you mean gaffa tape? Or is Jaffa tape a thing? (Checking Google now!) 1 Link to comment Share on other sites More sharing options...
Phil Sacre Posted April 17, 2023 Share Posted April 17, 2023 It might depend on your screed. Liquid or stiff? You don't want a liquid getting in joints making your insulation float. You don't want liquid getting under a poly sheet either. Link to comment Share on other sites More sharing options...
Thorfun Posted April 17, 2023 Author Share Posted April 17, 2023 1 hour ago, Phil Sacre said: It might depend on your screed. Liquid or stiff? You don't want a liquid getting in joints making your insulation float. You don't want liquid getting under a poly sheet either. it's a liquid screed. already done the prep work for one load. i promise you the chance of getting the liquid screed under the DPM will be minimal but i'll be foaming all gaps between EPS sheets (if there are any) and taping them for good measure. the benefit of self-building is you can belt and braces everything! takes ******* ages though. just ask @pocster. 1 Link to comment Share on other sites More sharing options...
Thorfun Posted April 23, 2023 Author Share Posted April 23, 2023 On 16/04/2023 at 21:39, nod said: got some and is certainly sticky! great colour as well. 1 Link to comment Share on other sites More sharing options...
nod Posted April 23, 2023 Share Posted April 23, 2023 We spray sloppy render at it without any problems 1 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now