Water Cut-Off

water cut off

Water Cut-Off


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Available in 10.5 oz. fiber caulk tubes or 5 gallon pails.

Seal Trust™ Water Cut-Off Mastic is a gray solvent based caulk designed to be used under the membrane to prevent water infiltration. Meets OTC VOC requirements.

Physical Properties:

Color: Gray
Viscosity (eps): 40# .104= 15-20 sec./20 gms.
Sievers Rheometer Density (#/GAL.): 11.0#
{caa914c204b1119fb3ddf612b08b76802b03c1f9b8e71b690c389a73edd07169} Solids: 86
Flash Point (F): 14 F TCC
Base: Synthetic elastomers, resin(s) and filler(s)
Solvent System: Aliphatic Clean-up
Solvent: Mineral spirits, VMP naptha, kerosene
Storage: May be stored outside if protected from water.
Packaging: 5 gallon pails, 10.5 oz. fiber caulk tubes (10 or 25 tubes/ctn)

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Water Cut-Off Application Instructions:

Our Water Cut-Off is gray colored and meant to be used UNDER single ply membranes such as EPDM and TPO as a preventative measure to stop water from entering the roof system. Seal Trust™ Water Cut-Off is very sticky. It is NOT UV protective, so installation under the membranes is vital for the long term performance of this product. Use Water Cut-Off at all drains and penetrations. Can also be used in reinforced membrane systems to prevent water from wicking into the scrim of all membranes. Always use this product under membranes only.



User’s Responsibility: This Product Information cannot cover all possible situations, which the user may experience during processing. Each aspect of your operations should be examined to determine if, or where, additional precautions may me necessary. All health and safety information contained in this bulletin should be provided to your employees or customers. It is your responsibility to use this information to develop appropriate work practice guidelines and employee instructional programs for your operation Disclaimer of Liability As the conditions or methods of use are beyond our control, we do not assume any responsibility and expressly disclaim any liability for any use of the material. Information contained herein is believed to be true and accurate but all statements or suggestions are made without warranty, express or implied, regarding the accuracy of the information, the hazards connected with the use of the material, or the results to be obtained from the use thereof. Compliance with all applicable federal, state and local laws and regulations remains the responsibility of the user.

Weight-201808-- lbs
Dimensions-201808-- × -201808-- × -201808-- in