This is based on the recommendation of thinset and grout manufacturers. Their products require a curing period before the masonry reaches its full strength. This process cannot be rushed by heating and apparently, the process can be adversely affected by the modest temperatures of the heating wires if they are turned on before 28 days (according to the thinset manufacturers).
Why do you recommend I wait 28 days to use my new system after thinset & tile are down?
Published on: April 2, 2013.