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Unread 11-28-2019, 10:07 PM   #11
jscozz
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Join Date: Jun 2005
Posts: 62
I think I am leaning towards using a modified mortar. The fireplace specs say that the area immediately adjacent to the top vent can real temperatures no greater than 250 deg.

1) Any advise on the best modified product to use for stone on durock? Laticrete 255? Laticrete 254 Platinum? Laticrete MVIS Hi Bond? Mapei products? So many choices... what is the best at any cost, best bonding product for veneer stone to durock?

2) Also, any advice for spanning the durock to fireplace top metal arch joint? I can't just mortar to that... for a few accent stones around the arch I will only have half a stone on the durock and half on metal fireplace backer. Since it will be an arch, and grouted between the accent stones, may be this will be ok?

Thanks!
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Jeff
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