Filler around socket mounting box

[fj_diy]

Once a metal socket mounting box is fixed to masonry - is it acceptable to use a foam filler to fill any large gaps around the box before finishing the surface with plaster / polyfilla?

Obviously I'd need to make sure no foam found its way into the box - but is there any reason not to have foam around the box?

 

[simon_d]

why not just use the polyfiller?

 

[fj_diy]

The hole is quite deep - that's the only reason.

Just wanted to avoid having to build up layers of polyfilla - so as to get the socket back in action ASAP.

 

[RF Lighting]

No reason not to use the foam, but it is messy and many prefer just to use filler or plaster.

 

[securespark]

Foam is good for filling hugely deep craters......

 

[simon_d]

Foam is good for filling hugely deep craters......

definatly. and it usually gets a good hold of the backbox aswell. tip if you foam/plaster a socket in. push 2 wall plugs into the filler. easier than drilling a hole later to add a screw if it doesnt hold properly