Mapei s type 1 and premium mortar should not be used under cement board.
Mapei type 1 tile adhesive not drying.
I m not really surprised.
Mapei recommends adding 5 to 10 in overage to ensure that your entire project is covered.
If the cement board manufacturer recommends a polymer modified mortar use mapei porcelain tile mortar or ultraflex 2.
Enter your measurement as a decimal 1 5 or a fraction 1 1 2.
You should ve used a 1 4 x 3 8 x 1 4 square notch trowel for 12x12.
Adhesive can be used for installing ceramic porcelain natural stone quarry and mosaic tile on interior floors and walls.
Remember to always use white adhesive with light coloured natural stone products such as travertine.
Gypsum wallboard dry walls only cement board exterior grade plywood interior only concrete and masonry block.
Mapei type 1 is a professional grade interior application tile adhesive for setting glazed and unglazed ceramic and porcelain tiles on floors walls and counter tops.
I ve seen a lot of issues using these premixed type stuff especially on floors.
For use with ceramic and porcelain tile.
This can also be affected by how thick you laid it down.
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This adhesive is used for interior applications only.
If you used 12x12 or larger it may take much longer.
For interior use only.
It is also ideal for fixing large format tiles up to 600x600mm on walls without s lippage.
Tile up to 12 in x 12 in on walls 6 in x 6 in on floors.
Smooth and easy to spread premixed.
Type 1 is a premium grade traditional nonflammable acrylic adhesive for setting glazed and unglazed ceramic and porcelain tiles on walls floors and countertops.
For use on shower walls.
Installation guide shows 72 hours for 8x8 tile.
Actual jobsite coverage may vary according to tile size and thickness exact joint width job conditions and grouting methods.
It meets ansi a136 1 type 1 and 2 specifications spreads easily and sets quickly and is easy to clean up.
Excellent grab capable of setting 12 x 12 30 x 30 cm tile on walls and 6 x 6 on floors.