Old 08-03-2010, 10:44 PM
Join Date: Jul 2010
Location: Idaho
Posts: 17
Default Water soluble mortar

Hi folks,

I have a bunch of water soluble Heat Stop refractory mortar from a previous project. Here are the specs:

HeatStop Premix
Meets ASTM C-199 and all building codes
Ready to use. Just mix. Air-setting
Great for laying firebrick in hot dry weather.
Water soluble so not appropriate for flues or outdoor fireplaces
Available in 50# buckets or in 10# pails.

Is this usable for an outdoor pizza oven that is not exposed to the elements?


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Old 08-04-2010, 01:36 PM
Tscarborough's Avatar
Il Pizzaiolo
Join Date: Oct 2009
Location: Ausitn
Posts: 3,291
Default Re: Water soluble mortar

Yes, although I would use regular mortar on the outer arch and anything directly exposed to the elements.
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Old 08-12-2010, 01:32 PM
Join Date: Jul 2010
Location: Idaho
Posts: 17
Default Re: Water soluble mortar


Thanks for the assistance!

Good Roads

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