What Is Type 2 Mastic

These mastics (ANSI 138.1 Standard Defined as Type I or Type II or ISO 13007 D1 or D2) are specifically formulated for interior-only installations in light-duty commercial or residential applications, such as walls, countertops and floors.

What's the difference between Type 1 and Type 2 mastic?

Type 1 is basically fully waterproof. Type 2 is water resistant. Both can also withstand a bit of heating without failure.

What is Type 1 mastic used for?

Type 1 Mastic is an adhesive that can be used for installing ceramic, porcelain, natural stone, quarry and mosaic tile on interior floors and walls. Recommended for floor applications with tile up to 8″ x 8″ and wall applications with tile up to 12″ x 12″.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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