Post #165141 by Gigantalope on Sat, Jun 11, 2005 9:35 AM

If it's sticking to existing brick or cinderblock, you should be able to just attach them with masonary adhesive, or morter. The weight won't matter. Clean the old stuff really well, and if you use morter soak the rocks. (Black lava rock when indoors shows dust really badly with all the nooks...be warned)

I've seen rough black fired brick too both real and the inch thick fake stuff that people attach to stucco. This might be an option.

Agrigate places usually have an assortment of stone you can just purchase by the yard. They will let you sort of pick what you if you pick it up yourself.

If you are dead set against using actual rocks, some industrial tile places also might have somthing you could use which wasn't intended for that.

Another angle might be to do a bit of exparamenting, and try lathing the look you want, to the reinforced exsisting fireplace, then texturing the applied material while it's wet.