Acu-Caulk:SM is a single component silicone-based, “paste-like” mastic with excellent adherence to porous and non-porous substrates. It is resistant to stains and blisters, and exhibits high alkali resistance over masonry surfaces as well to corrosion resistance over metal. It is designed to be applied into vertical seams on metal roofs, around fleshing, drains and protrusions, to repair cracks, seal fasteners and all common details found over the roof.



Acu-Caulk:SM is used for waterproofing masonry, stucco, concrete block, modified bitumen membranes, asphalt, single-ply and metal as well as other roof and wall surfaces. It provides excellent adhesion, long life, and is resistant to failure by expansion, contraction, or other joint movement. 


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Tel: (971) 276-8958


Mailing Address:

1314 NW Irving St, Suite 406

Portland, OR, 97209.

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