Primary Vertical Seal
Primary Vertical Seal
A pre-compressed, self-expanding foam joint seal, engineered to perform as a highly flexible, weathertight, primary seal in vertical exterior applications. The high-density polyurethane foam self-expands to fill the joint creating a permanent, elastic, vapor-permeable, weathertight seal.
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Increased R-Value
Depth of foam can be changed to increase R-value and sound properties
Weathertight Seal
Protects against driving rain up to 12 lb/ft² or 600 Pa
Lasting Durability
UV-stable and remains permanently flexible for lifetime of seal
Easy Application
Available in both sticks and rolls that are treated with a pressure-sensitive adhesive (PSA) on one side for ease of installation; no mixing, masking or priming required
Willseal 150 Is Best For
Willseal® 600
Breathable Primary Seal for Vertical Applications
Willseal® Backer Roll
Secondary Seal for Vertical Applications
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High-Performance Moisture-Cure Silicone Sealant
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High-Performance Neutral-Cure Silicone Sealant
