Grouting Flagstone in Cold Temps

by MontanaKJ
(Bigfork Montana)

How cold is too cold to grout flagstone?

Montana

Comments for
Grouting Flagstone in Cold Temps

MASONRY FACTS
by: G.R. Webb

Most codes throughout the United States require 40 degrees so I would not even consider any mortar or grout installation unless it's 35 degrees and rising. Some building and materials codes are inaccurate to the real world but this one is about right.

freezing
by: David

You can't if it's freezing. It will compromise the concrete.

We have grouted many times in the winter in Colorado but the concrete sits at least 8 hours in above freezing weather.

Great luck!

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