Mortar question

[jnagy75]

Hello, new member here. I am wanting to lay bluestone in a mosiac pattern over existing brick hearth (extension) of a regular wood burning fireplace. My question is what is the best mortar to do this with and what to use to fill in the joints after. Thanks in advance and I have searched everywhere and cannot seem to find an answer to this.

 

[southbalto]

not going to be a high impact area.... I'd say you're fine with type s

 

[mstoelton]

I would use latex admix premium stone setting mortar. HD sells it for about $25 per bag. It is the premium mortar that they sell.

It might be overkill but I've never had it fail. That is what I used to set my soapstone hearthstone and about 600 square feet of limestone.

Use latex enhanced mortar (your color choice) for the grout.

 

[jnagy75]

Thank you for the replies. Maybe anything else I should be aware of?

 

[mstoelton]

Let it dry well (2 weeks) before you burn and heat it up.

 

[jnagy75]

Let it dry well (2 weeks) before you burn and heat it up.

Yeah. I went with type s. Seemed to do the job but we'll see. I do not think I will have to use it any time soon as it is 70 in SC now!