Plastering question

longwalks1

We’ve got our hallway ready to plaster but 2 walls will need building out about 2 inches before the final skim goes on. Can’t remember the name of it. Maybe bonding? 

 Will a plasterer be able to build the wall out the 2” needed and do the final top skim in a day, or does the bonding (I think?) need a certain amount of time to dry?

FaceHead

How big is this wall? 2" is quite a bit which could mean a lot of bags of bonding. You would need multiple coats, adding drying time between each. 

Is it an external wall where insulation is beneficial. Dot-and-dabbing the 38mm insulated plasterboards on and skimming it over would be my approach.

If you screw on plasterboards they can be skimmed right away. Bonding or plasterboard adhesive need a few hours to dry before skimming, so can be done same day if you have something else to do in the middle of the day (and it's one coat of bonding). 

FreeBear

FaceHead said: Is it an external wall where insulation is beneficial. Dot-and-dabbing the 38mm insulated plasterboards on and skimming it over would be my approach.

Would still need quite a bit of bonding over 38mm thermal PB - I'd go for 43mm or even 50mm..

If this is an internal wall, battens & plasterboard would be the way to go unless it is a very small area.

fenwick458

nobody builds walls out 2" with bonding anymore, not since the advent of dry wall adhesive and plasterboards. you wouldn't want 2" of bonding anyway...

longwalks1

Thanks all, i should of said its 2 area's of less that 1m2 each, one part is above a radiator.  Will see what plasterer says when he comes to look at the work

Thanks again

Bendy_House

Any chance of a photo?

I guess there are options. I can't see why a piece of p'board cannot be cut to suit, and D&D'd in place and then skimmed. And I also cannot see any reason why 'bonding' cannot be built up in layers to do the same. Each layer only has to 'set' before another is applied over it. Mind you, it'll take an age to dry fully!