I have to install 1/4" backer board on washroom floor with mortar under it and them screw them. Is it ok if i walk on it to screw, when the mortar is wet under the backer boards?
If you're going to install ceramic tiles on the floor your better to use an uncoupling membrane. The end result is better.
Hi, Start your screws in the center an work outwards ,working once sheer at a time, Don't lay the whole floor at once then start screwing as the cub will suck all the Water out of the Mortar.set you can walk on them to set the screws then move on to the next sheet.
Unless you have a crew of guys all working together.
Is it OK to walk on it one board at a time
It will be better to install Schluter membrane or strata with an adequate subfloor
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