(rendering) over plyboard

SCUDmcCOY · 28 Aug 2009

can ply around a dormer window be meshed and rendered or is it essential 2 have 2 felt the ply first.the chippy at work reckons i can mesh it but i have a feeling it could cause cracking.any other houses i have been at have been felted.

joe-90 · 29 Aug 2009

I'm with the chippy on this one. My GF place has been meshed and rendered and it's never been any bother in 20 years.

roy c · 29 Aug 2009

Usually best to double mesh it on to felt , so the muck gets inbetween the mesh and keys better.....

SCUDmcCOY · 29 Aug 2009

ty for advice but does the timber not rot quicker with no felt under the mesh

joe-90 · 29 Aug 2009

Use WBP ply and add SBR to your render. Then it will be waterproof.

roughcaster · 30 Aug 2009

Any time i've rendered/roughcasted onto timber, it's always been felted first. The photos below (taken in the mid 80's) are of a small cottage, myself and a labourer friend roughcasted. It was built many years ago from "railway sleepers", sheeted with corrugated iron. The corrugated sheeting was removed,, the walls felted, battened, and covered with wire lath, scratched coated and then roughcasted. You probably couldn't get away with it nowadays.
A wbp, plywood boarded dormer would not be a problem done the same way.

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roughcaster
3 May 2008
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roughcaster
3 May 2008
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roughcaster
3 May 2008
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Roughcaster.

SCUDmcCOY · 31 Aug 2009

cheers for the replies.around the window has been done in ply.the felt will be put on by the chippy.i was going to fix the mesh onto this.i was wondering what the battens were for.mabye i refer to them as something else.lattes?

roughcaster · 31 Aug 2009

The battens Scud are for fixing the mesh onto. It allows the render scratch
coat, room to build up behind the wire lath and grip onto it. For a small job,, a 2"x1" batten or similar would be ideal.

Roughcaster.

SCUDmcCOY · 31 Aug 2009

i get u now.thanks roughcaster.

shonabaird · 9 Oct 2010

SCUDmcCOY said:
can ply around a dormer window be meshed and rendered or is it essential 2 have 2 felt the ply first.the chippy at work reckons i can mesh it but i have a feeling it could cause cracking.any other houses i have been at have been felted.

i am the best roughcaster i know.truth....building paper then basic wire lath with 2 scratch coats with plenty waterproofer then top coat and chip and u can forget bout it as long as u live.ps watch roughcaster dosnt put chips on upsidedown.lol

joe-90 · 9 Oct 2010

Hey RC - did you take those pics with your mobile? Or your digital camera?

roughcaster · 9 Oct 2010

I never took the photo's Joe. The wife of the man standing talking to me in pic number 3 took them. I don't think mobile phones or digi cams were very common in the mid 1980's. It might have been taken with a Box Brownie though.

joe-90 · 9 Oct 2010

That's a young man mate. You are the old geezer standing up.

roughcaster · 9 Oct 2010

24 years ago i was a young ish man,, nowadays, i could be the old geezer standing up,,,

but i'm young at heart Joe.

roy c · 9 Oct 2010

shonabaird said:
SCUDmcCOY said:

can ply around a dormer window be meshed and rendered or is it essential 2 have 2 felt the ply first.the chippy at work reckons i can mesh it but i have a feeling it could cause cracking.any other houses i have been at have been felted.

Click to expand...

i am the best roughcaster i know.truth....building paper then basic wire lath with 2 scratch coats with plenty waterproofer then top coat and chip and u can forget bout it as long as u live.ps watch roughcaster dosnt put chips on upsidedown.lol

Check the dates on the posts mucka...

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(rendering) over plyboard

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