DIY Doctor

Main navigation

wbp plywood

Postby pezandlea » Tue Apr 15, 2008 11:10 am

i wounder if u could help me,
i had builders in and they done my bathroom
i had a slight problem when my tiles started to crack in half on the wall. When i asked them wat they used they said wbp ply does it shrink or would putting pvc on wbp ply make it shrink at all.. hope u can help
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Tue Apr 15, 2008 10:59 am


Simply Build It

Postby rosebery » Sat Apr 19, 2008 11:02 am

How long ago was the bathroom fitted?

When did the cracking start?

If both relatively recent don't worry about asking what they did - tell 'em to come back and fix it!

For info though WPB (water and boil proof) ply doesn't shrink. They may have used too thin a sheet though. What do you mean by pvc? I have a feeling I know but I'd like you to confirm.

Rank: Project Manager
Posts: 2021
Joined: Wed Sep 26, 2007 8:55 pm

Postby stevenc1603 » Thu May 15, 2008 9:46 am

Let me guess, your builders sheeted the wall in ply and then use PVA glue to "seal" it?

If they did then there's basically a thin layer of glue that will barley be holding the tiles to the wall as PVA forms a skin. It doesn't penetrate the ply to form a proper bond. That coupled with the fact that it will go "live" as again when the wet tile adhesive hit it means it will have a sketchy hold at best.
Rank: Ganger
Progress to next rank:
Posts: 199
Joined: Tue May 08, 2007 11:59 am

Postby TheDoctor5 » Thu Jan 22, 2009 10:55 am

Last year 64% of the questions asked in our forum were answered within our DIY project pages at The project pages are now separated alphabetically and your answers are accompanied by diagrams and the ability to see, and buy, the tools and/or required to complete your project. Use our search box to look for your answer and save a great deal of time and money!
Posts: 1381
Joined: Tue Jan 20, 2009 9:17 am

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!