Skimming over plywood


Postby RobP » Sat Mar 03, 2012 6:59 am

I need to find out the best way to prime plywood before skimming over. Spoken to British Gypsum but they said they haven’t tested any products for this application - so no comment. The problem appears to be that the plywood will absorb moisture and expand during coating. The wood will then shrink back when dried causing the plaster bond to crack and fail. I have read conflicting reports for using PVA as a primer for this too is water based. Thistle Bond-it was suggested but without any guarantee it will succeed. Anyone got any experience or constructive comments on this application ?
RobP
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Sat Mar 03, 2012 6:36 am

Sponsor

Simply Build It

Postby welsh brickie » Tue Mar 13, 2012 5:01 pm

the only way is to screw wire mesh to the ply,then paint pva on.Once dried use carlite bonding to cover the mesh and thistle multi board laster to skim.
welsh brickie
Rank: Project Manager
Posts: 2240
Joined: Sat Apr 12, 2008 7:54 am

Postby RobP » Wed Mar 14, 2012 9:23 am

welsh brickie wrote:the only way is to screw wire mesh to the ply,then paint pva on.Once dried use carlite bonding to cover the mesh and thistle multi board laster to skim.


Many thanks for this advice. I have bought a sheet of Metal Lath from B&Q for about £14. Bigger than needed, it cut down very easily to the size of the plywood board - should have worn gloves though! I fixed the Lath with a hand staple gun and not screwed, although not too sure now about the potential for the staples to rust. I have a platerer booked to do the remainder of the work and so, hopefully, job done.
RobP
Rank: Labourer
Progress to next rank:
25%
Posts: 2
Joined: Sat Mar 03, 2012 6:36 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!



 


  • Related Topics