Description
Sikaflex NP 1 (Formerly MasterSeal NP 1) is a premium grade, moisture cured polyurethane sealant that has excellent adhesion and bonds to most construction materials without a primer. It can also be used in green concrete applications.
Resists aging and weathering and is highly flexible with joint movement capability +/- 35% and has a wide temperature application range making NP 1 suitable for all climates.
Designed for all types of joints where the sealant joint depth falls between the maximum depth of 1/2″ and minimum depth of 1/4″.
Suitable for water immersion with documented performance in wet areas. It is compatible with non-rigid coatings and can be painted.
Can also be used as an acoustical sealant to increase system STC value. It minimizes sound transfer and supports high STC ratings.
UL Listed; Passes 4hour, 4inch, fire and hose stream test when used with Ultra Block or mineral wool.
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