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Acrostop T

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Acrostop T Product Data Sheet


ACROSTOP T is a flexible, acrylic based, fiber-reinforced waterproofing coating that is field-mixed with Type I or Type II Portland cement to produce an air/water resistive barrier.

For use as an above grade trowel applied air/water resistive barrier with Acrocrete EIFS or AcroWall CBS over PermaBase® cement board and other cement boards conforming with ASTM C1325 (Type A exterior) poured concrete / unit masonry, ASTM C1177 type sheathing including e2XPTM sheathing, GlasRoc® sheathing, SecurockTM glass-mat sheathing, DensGlassTM exterior sheathing, GreenGlass sheathing, Weather Defense Platinum sheathing. All sheathing joints and terminations must be reinforced with minimum (101.6 mm) 4” wide SELF-ADHERING MESH tape, ACROMESHTM 4 or WS FLASH™ 4 or 9.
NOTE: Wood-based sheathings are not acceptable substrates.

• Mixes and handles like a base coat
• Excellent tensile bond
• Trowel-applied liquid

27.2 kg per 19-liter pail (60 lbs per 5-gallon pail).

Approximate coverage rate 16.7–17.7 m2 (180–190 ft2) per pail at a thickness of 2.4 mm (3/32”).

Consult BASF Wall Systems’ Technical Services Department for specific recommendations concerning all other applications. Consult the Acrocrete® website,, for additional information about products and systems and for updated literature.