Lime Putty on Smooth Stone?

[sixeighth]

Hello.

Will lime putty adhere ok to smooth stone?

I'm getting a fireplace opening ready to fit a stove and both sides are smooth stone.

FireOpening

• sixeighth
• 15 May 2011
• 1

Fire Opening for Stove

 

[woodgnome]

Hello Sixtheighth-when you say lime putty,do you mean lime plaster made with putty?.If so then I would scud the smooth stone with 1 llime putty 2 rough sand and allow to dry fully prior to plastering ..

 

[sixeighth]

I think so - it's bagged stuff, ready mixed, recommended by a local lime mortar specialist for patching lime plaster on lath. I'm a complete novice so can't tell you which it is.

I used to see scudding with a really wet mixture - should I be adding lots of water to the lime/sand you suggest? I do have some 'finishing stuff' left in a tub and wondered if that would do the same job?

 

[woodgnome]

If it is already pre mixed in a bag, then just mix up a small bit until its a bit runny and flick it on to the brushed and dampened[not wet]surface.I use a small coal shovel for this using a FAST backhand flicking motion.You dont need a thick layer-just a splattering,that when dry provides a better key than the smooth stone.Too wet and it will slide down,too dry and it wont stick.

 

[sixeighth]

Thanks woodgnome - I'll give that a go.