Premium Tile Adhesive
Type 1 is a premium-grade, traditional, nonflammable, acrylic adhesive for setting glazed and unglazed ceramic and porcelain tiles on walls, floors and countertops. This adhesive is used for interior applications only.
Can I apply Type 1 mastic over a waterproofing membrane?
Ready-to-use tile adhesives such as MAPEI's Type 1 require a porous substrate to cure properly. They should not be installed over a waterproofing membrane.
Can Type 1 mastic be used under cement board?
MAPEI's Type 1 should not be used under cement board. Refer to the cement board manufacturer’s written installation instructions for cement-based mortar recommendations. If the cement board manufacturer recommends a polymer-modified mortar, MAPEI recommends Porcelain Tile Mortar. If the cement board manufacturer recommends a non-modified mortar, MAPEI recommends Uncoupling Membrane Mortar.
Can Type 1 mastic be used over cement board?
Yes, MAPEI's Type 1 can be used to set tile over cement board and fiber cement board.
Can Type 1 mastic be used over drywall?
Yes, MAPEI's Type 1 can be used to set tile over clean drywall. All areas with wall mud (gypsum-based patching compounds), must be primed with MAPEI's Primer T™ before application of Type 1.
Is there a limit for the tile size?
The maximum size of a tile for use with Type 1 is 6" x 6" on floors and 12" x 12" on walls.
What is the maximum trowel size that can be used?
A 1/4" x 3/8" x 1/4" square-notch trowel is the maximum trowel size.
Can I use Type 1 mastic with a radiant-heat flooring system?
MAPEI's Type 1 should not be used with radiant-heat flooring systems. Polymer-modified, cement-based mortars such as MAPEI's Large Tile & Stone Mortar are generally recommended for installing tile over radiant-heat systems. Refer to the written instructions of the radiant-heat manufacturer for recommendations of cement-based mortars.
Can Type 1 mastic be used outside?
MAPEI's Type 1 should not be used for exterior installations. Polymer-modified, cement-based mortars generally recommended for installing tile outside include MAPEI's Large Tile & Stone Mortar, and MAPEI's Uncoupling Membrane Mortar mixed with MAPEI's Polymer Additive.
Can Type 1 mastic be used in a pool?
MAPEI's Type 1 should not be used in submerged applications such as swimming pools. Use MAPEI's Mosaic & Glass Tile Mortar mosaic and glass tile mortar mixed with MAPEI's Polymer Additive.
Can Type 1 mastic also be used as a grout?
MAPEI's Type 1 should not be used as grout. For convenience, MAPEI offers MAPEI Flexcolor® CQ, which is a ready-to-use (premixed) grout.