what backing plaster for tiles around rayburn

[rudypup]

wot plaster can be used around aga or rayburn if to be tiled?

 

[nybor62]

why plaster it if its to be tiled just use cement boards i.e hardi backer

 

[kilty55]

hi pup what is current substrate

 

[rudypup]

the space has to be squared up as is in old property, as the existing surround is sand and cement rendered i wondered whether thistle hardwall would be ok, if to be tiled onto also. ??????

 

[rudypup]

would the hardwall backing with tiles on, withstand the heat from the rayburn?

 

[rudypup]

how do you fix those boards to the fire surround?

 

[DHTiling]

If it is rendered then that is perfect as it is, if it isn't very flat then skim the wall in with rapid set to flatten... then tile with same adhesive...

 

[rudypup]

the surfaces were very very uneven and was asked to do this job as a plasterer to straighten the surfaces and plumb the angles for tiling. if this was done with a backing plaster such as thistle hardwall and then tiled over would this be ok?

 

[DHTiling]

IMO, NO!!.. risk of it blowing with the heat....

 

[Ajax123]

Line it with heat resistant board e.g. Cement backer or plasterboard, mechanically fixed not just glued. Then tile onto that.

 

[Ajax123]

By the way my Rayburn is backed with bonding coat plaster finished with thistle multi.

Also bear in mind that if it is a modern Rayburn or aga the outside doesn't get that hot because they are well insulated due to efficiency regulations.