JohnBishop Posted April 13, 2023 Share Posted April 13, 2023 (edited) Hi All, I have a copper pipe in the wall installed by the plumber (15mm cold mains), but now I have to fill the void with something. What should I use for that? Bonding 60, BondingCoat or simply MultiFinish? Best regards Edited April 13, 2023 by JohnBishop Link to comment Share on other sites More sharing options...
Andehh Posted April 13, 2023 Share Posted April 13, 2023 Expanding foam? Whats the void made up of, any pics? Link to comment Share on other sites More sharing options...
JohnBishop Posted April 13, 2023 Author Share Posted April 13, 2023 (edited) 7 minutes ago, Andehh said: Expanding foam? Whats the void made up of, any pics? I just cut out some plaster and a bit of brick with an angle grinder to run the copper pipe. It's maybe 18-22mm wide. Edited April 13, 2023 by JohnBishop Link to comment Share on other sites More sharing options...
PeterW Posted April 13, 2023 Share Posted April 13, 2023 Something not cement based so it doesn’t corrode the pipe.. How deep is it ..? Link to comment Share on other sites More sharing options...
JohnBishop Posted April 14, 2023 Author Share Posted April 14, 2023 12 hours ago, PeterW said: Something not cement based so it doesn’t corrode the pipe.. How deep is it ..? It's pretty shallow just so the 15mm pipe is hidden, I would say 18-20mm I put tiles or panels on top. Link to comment Share on other sites More sharing options...
johnhenstock83 Posted April 14, 2023 Share Posted April 14, 2023 easi fill 60 is what you need! are the pipes insulated? Link to comment Share on other sites More sharing options...
JohnBishop Posted April 14, 2023 Author Share Posted April 14, 2023 2 hours ago, johnhenstock83 said: easi fill 60 is what you need! are the pipes insulated? ok no, it's just wrapped in tape Link to comment Share on other sites More sharing options...
JohnBishop Posted April 16, 2023 Author Share Posted April 16, 2023 This is the pipe. I have covered it with PVA all around but if I put tiles or the multipanel on top maybe I can leave it (the void) like that, no? Link to comment Share on other sites More sharing options...
Nickfromwales Posted April 16, 2023 Share Posted April 16, 2023 Leave as-is. No need to do anything more tbh. Exp foam would be my only suggestion as it is a cold mains so maybe you'd get condensation forming on it. Remove the clip, fill with foam ( behind the pipe ) and hold in place whilst the foam cures. You won't need the clip afterwards, the foam will grip it perfectly well, if not better! 1 Link to comment Share on other sites More sharing options...
Onoff Posted April 17, 2023 Share Posted April 17, 2023 Low expansion foam even better. 1 Link to comment Share on other sites More sharing options...
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