Question-what happens when we add DowFlake to sand?

Matt P. ask if Dow Flake should be mixed with sand and salt to keep it from freezing in the winter.


There is no need to mix Dow Flake in the sand pile to keep it from freezing. 50-100 pounds of salt per cubic yard is all that is needed. The problem becomes when you need to use the sand in really cold temperatures and try to add BOOST w/32% CaCl2, the chloride content becomes 35 – 38% or more. At those percentages it can freeze at 40+ degrees, crystallizing and making the pavement icier then when you started. In the world of chlorides and liquid deicers. More is not always better. If you do have a cold snap add the BOOST or liquids to it then. The other issue is, in the spring or summer when you try to use the sand for mortar or cement, it will be hard to work with because it will cure to fast and no one will remember why.

Thanks for the question Matt! Please feel free to post your questions, I will respond ASAP. Always great to talk winter liquids with you. You can always email me at too.

Think Snow!!


About Dave Budd

Vice President of Product Development and Marketing, Great Lakes Chloride, Inc. Serving Michigan, Indiana, Illinois, Ohio and Kentucky. Retired Michigan DOT, October 2010 after 32 years experience in Maintenance/Operations. Specializing in winter operations and liquid de-icers and anti-icers.
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