Although there are drawbacks with mastic there are advantages.
Mastic for wall tile.
Mastic has superior holding strength easier to apply and sets quickly.
Smooth and easy to spread premixed adhesive.
Gypsum wallboard dry walls only cement board exterior grade plywood interior only concrete and masonry block.
When used to tile walls it s strength allows you to set tile and if you re good with eyeballing you can set tile without the use of spacers.
It allows the quick and efficient setting of porcelain quarry stone ceramic and mosaic tiles.
Formulated for the installation of ceramic tiles on floors walls and countertops as well as in shower enclosures.
Pre mixed for easy installation.
While mastic does have strong points such as great adhesive properties and adaptability to many substrata high performance in wet areas is not one of its high points.
For interior use only.
For use with ceramic and porcelain tile.
Mastic is an adhesive that along with thin set mortar is used to stick tile to wall or floor surfaces before grouting.
Tile up to 12 in x 12 in on walls 6 in x 6 in on floors.
For use on shower walls.