Wall Chase Filling

IMO, if you are plastering over then don't use exp foam. It will be more trouble than it's worth.

Use plaster bonding coat to almost fill the chase and then hardwall skim to finish.

 

It will look cr@p. You will always see the chase and the foam filler. It doesn't finish smooth.

 

Bonding plaster then easifill. The beauty with easifill is that you can sand it down to the existing plaster and will be invisible if you've done it right

Btw, if its an old property with no cavity wall, then use sand/cement render instead of bonding...

 

Yeah as cgn says as bonding coat will absorb moisture. One thing a lot of people have said (although it's handy) is that one coat stuff is carp. I find the dry wall adhesive good for putting galavanised boxes in. Goes off in an hour and rock solid

 

All the chase I have ever done have been capped over with metal capping.

Used one coat plaster to set the channels in as find it is more denser, but never able to achieve good finish on its own, so tend to use it to fill deep holes or setting in back boxes.

Then go over with filler.

 

Filler? why? You need to improve your plastering skills, mate

 

Always had trouble trying to feather in the edges using finishing plaster.

Filler is easier to sand.

Does take time but not professional.

Wall are painted so have to be perfect.

Did use undercoat plaster for one job see 'Nest project'.

 

£36 per can

 

Dont forget to pva the chase before plastering Kev - mix up around what 3 to 4 water to 1 neat pva.

 

Pva!!! Nooooooooooooooooooooooooooooooooooooooooooooooo

 

Yes kool - I know what your thinking but its not relevant to the situation m8..

 

I'd also say, don't use bonding on the internal face of an external wall. if there's any moisture in the wall the bonding pulls it through, I'd opt for sand and cement here then skim.

 

I've used Thistle multli finish as a undercoat & skim coat for filling a lot of chases over the years.

 

One advantage using a FCU first, it allows you to isolate the external socket.

 

An alternative to an FCU would be a 20A DP switch.

 

And no need for an RCD socket, as if you're socket circuit isn't currently RCD protected, as your altering it, you should be providing RCD protection.