Plastering over woodfibre board

[Maria D]

I'd appreciate some (more) advice re: lime plastering and woodfibre board. So far, our plasterer has put on a scud coat, a level coat (both NHL2) and is now fitting the woodfibre board using board render and mechanical fixings.
Next step is the coat over the woodfibre board with the mesh. Is there absolutely a need to do another coat over this again as well as a skim coat or would a fine skim coat be sufficient? The material and labour costs with this job have been high and my plasterer was saying that three coats over the woodfibre seems excessive. Any opinions on this appreciated.

 

[Lacan07]

I'd appreciate some (more) advice re: lime plastering and woodfibre board. So far, our plasterer has put on a scud coat, a level coat (both NHL2) and is now fitting the woodfibre board using board render and mechanical fixings.
Next step is the coat over the woodfibre board with the mesh. Is there absolutely a need to do another coat over this again as well as a skim coat or would a fine skim coat be sufficient? The material and labour costs with this job have been high and my plasterer was saying that three coats over the woodfibre seems excessive. Any opinions on this appreciated.

All thats required is 2 coats on to wood fibre board, 1st coat - push in your mesh - 2nd coat over the top.

 

[Maria D]

Thank you. The suppliers information says one coat, mesh, second coat and then finish coat. I think I’ll skip the second coat and go straight to finish coat.

 

[Lacan07]

Thank you. The suppliers information says one coat, mesh, second coat and then finish coat. I think I’ll skip the second coat and go straight to finish coat.

Yes, 3 coats seems excessive to me. Its always been 2 coats on to wood fibre so I don't know why they're suggesting 3. The fact your plasterer is also sceptical says it all.

2 coats worked perfectly well on my installation.