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 4–hour, 4–inch, fire and hose stream test when used with Ultra Block or mineral wool.
It is resistant to the effects of aging and environmental factors, demonstrating significant flexibility with a joint movement allowance of +/- 35%. Additionally, it has a broad range of temperature applications, making NP 1 adaptable for use in any climate.
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".
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.