• AAMA 711 Verified: Tested for water resistance, adhesion, and durability.
• Superior Adhesion: Bonds to a wide variety of common substrates with or without primer.
• Self-Sealing: Seals around nails, staples, and fasteners for watertight protection.
• Easy Installation: Peel-and-stick with a release liner for clean application.
• Flexible Temperature Range: Apply in temperatures between 40°F–120°F (down to 25°F with adhesive).
• High Heat Resistance: Performs at temperatures up to 240°F.
• Mold & Mildew Protection: Helps inhibit moisture penetration and microbial growth.
• Available Sizes: Offered in 4", 6", 9", and 12" widths; 100 ft length.

• Window frames (straight jambs and sills)
• Door frames
• Sheathing joints
• Rough openings
• Seams in vapor-permeable and impermeable WRBs

Common Substrates:

• OSB
• Plywood
• Exterior gypsum
• Concrete
• Metal
• Polyguard air barrier membranes
• Primed and unprimed WRBs (House Wraps)

• Surface Preparation: Substrates must be clean, dry, and free from oil, dust, and debris. Avoid applying over uncured or solvent-based sealants.
• Primer: Use Polyguard 650 WB or Clearbond Liquid Adhesive if substrate adhesion is uncertain or in cold weather (below 40°F).
• Temperature Range: Apply between 40°F and 120°F (25°F with adhesive support).

Installation Tips:

• Always create a positive slope on sills to shed water.
• Install WS20 across sills first, then jambs, and finish with head flashing.
• Use hand-roller to ensure proper bond.
• Do not apply over the bottom window flange—leave this open for drainage.