Silicone Brush-Grade 422 is a ready-to use, high solids, single component moisture cured silicone mastic designed for waterproofing penetrations, curbs, seams, and flashings areas.

  • Excellent UV protection and reflectivity
  • Superior adhesion to silicone coated surfaces
  • Low VOC
  • Superior protection – forms a durable, rubber-like seal
  • 95% Solids – Uses less material for same dry film thickness

Silicone Brush-Grade 422 provides elemental protection for architectural surfaces such as vertical walls, masonry, concrete, metal, single ply roof membranes sprayed-in-place polyurethane foam systems and previously coated silicone areas.

  • Modified Bitumen
  • EPDM
  • Single-ply
  • Smooth BUR
  • Concrete
  • SPF
  • 5-gallon pail
  • 2-gallon pail
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