Tremco Spectrem 1 Moisture Cure Silicone Sealant – 20 oz, High Movement Joint Sealant – AWF PRO Gloves Included – Black, Pack of 15

Spectrem 1 is a high-performance, single-component, moisture-cure, ultra-low modulus silicone sealant designed for the most demanding dynamically moving joints. It is ideal for applications involving materials with high coefficients of linear expansion, including aluminum curtain walls, precast concrete panels, metal panels, and window perimeters. This versatile sealant delivers excellent primerless adhesion to most construction substrates, including difficult-to-adhere-to surfaces. Its ultra-low modulus formulation provides exceptional elasticity, allowing it to accommodate joint movement of +100% / -50%, making it a trusted solution for expansion joints, perimeter caulking, and complex building envelope detailing. Engineered for long-term durability, Spectrem 1 resists driving rain, ozone, UV exposure, and temperature extremes. It also carries GREENGUARD Gold Certification, making it suitable for use in sensitive environments such as hospitals and schools. Available in a wide range of standard colors, with custom color matching options available.

• Handles joint movement effectively: Accommodates +100% / -50% movement; maintains airtight and watertight seals; bonds difficult substrates; supports long-term building envelope performance
• Advanced silicone performance: Single-component moisture-cure formula; ultra-low modulus flexibility; strong adhesion to metals, glass, concrete and air barrier membranes; ready-to-use application
• Designed for demanding construction joints: Used on curtainwalls, window perimeters and expansion joints; ideal for air barrier transitions; suited for high-movement assemblies; supports weatherproofing systems
• Built for durability: UV, ozone and weather resistant silicone; performs in temperature extremes; slightly grain texture helps resist tearing; long-term exterior flexibility
• Trusted professional-grade sealant: Meets ASTM C920 and industry standards; GREENGUARD Gold certified; compatible with Tremco building envelope systems; repair or replacement warranty available