Semco Waterproofing membrane

[Tim Stapp]

Anyone tried it for plywood darkroom sinks?

SEMCO Liquid Membrane™

SEMCO Liquid Membrane™️ is a versatile waterproofing liquid rubber membrane available in the USA. It forms a continuous waterproofing barrier with exceptional adhesion. SEMCO makes rubber foundation coating, foot deck coating easy to apply and proudly made in USA. Waterproofing made easy.

www.semcoworks.com

 

[rcphoto]

I had a friend use something similar on a deck, the wood rotted away but the rubber membrane was still intact when we replaced the deck.