Apply WATER-SHIELD™ for post-construction application to give building envelopes additional moisture protection, including mortar joints.

It provides a long-term beading effect over the masonry surface, keeping moisture out of even the smallest pinholes.


  • Zero VOC
  • Silane siloxane
  • Invisible– not shiny
  • 7-year water repellency
  • Blocks pores in block, avoiding water penetration from exterior, while allowing interior air and vapor transfer
  • Recommendation: spray over mortar joints to provide full masonry protection



1. Substrate must be dry and clean of oil and dirt.
2. Apply WATER-SHIELD using a sprayer.
3. Let stand for a minimum of 20 minutes.

Available in 5 gal. pails, with EZ-Pour spout.