TREMprime Non-Porous Primer – Ultimate Adhesion for Metal, Glass & Plastic Substrates

Achieve fail-safe bonds on challenging non-porous surfaces with TREMprime Non-Porous Primer. This innovative, one-part, water-based primer is specifically formulated to create a powerful adhesive bridge between smooth substrates like metal, glass, and plastic, and Tremco's range of polyurethane sealants and membranes. Its ultra-low viscosity ensures easy application and optimal surface preparation where traditional primers struggle.

With an exceptionally low VOC content of just 7g/L and Green Star compliance, TREMprime Non-Porous Primer offers an environmentally conscious choice without compromising performance. It's the essential first step for ensuring the long-term durability and reliability of waterproofing systems on metal cladding, window frames, and plastic composites.

Key Features & Benefits:

• Superior Adhesion on Non-Porous Surfaces: Specifically engineered to bond polyurethane products to metal, glass, plastic, and other smooth substrates.
• Ultra-Low VOC & Water-Based: With only 7g/L VOC, it is safer for applicators and ideal for use in confined spaces and environmentally sensitive projects.
• Green Star Compliant: Meets the requirements for sustainable building projects, contributing to Green Star certification credits.
• Fast Recoat Time: Allows for sealant or membrane application just 15 minutes after priming under standard conditions.
• Easy Application & Clean-Up: Can be applied with a clean cloth and cleans up easily with water, simplifying the priming process.
• Clear & Non-Staining: Dries to a clear film, leaving no residue or color, making it ideal for visible applications.

Primary Applications:

• Metal Substrates: Priming aluminum, steel, and galvanized metal cladding, flashings, and window frames before sealant application.
• Plastic & Composite Materials: Preparing PVC, fiberglass, acrylic, and other plastic-based building products.
• Glass Surfaces: Enhancing adhesion on glass structures and assemblies.
• Pre-Waterproofing Preparation: Essential primer for ensuring membrane adhesion on non-porous surfaces in balcony, podium, and roof applications.

Technical Specifications:

• Type: One-part, water-based primer
• Color: Clear
• VOC Content: 7 g/L (Ultra-low)
• Coverage Rate: Approximately 42 m² per 3.7L tin
• Recoat Time: 15 minutes (@ 23°C, 50% R.H.)
• Pot Life: 8 hours (@ 23°C, 50% R.H.)
• Packaging: 3.7L tin
• Shelf Life: 12 months in original, unopened packaging

Surface Preparation & Usage:

• Cleaning: Substrates must be clean, sound, and free of contaminants. Wipe with Tremco Xylol and ensure solvent has flashed off.
• Metal Preparation: Metallic surfaces should be abrasive blasted to AS1627.4, class 2.5 "Near White Metal" standard.
• Application: Apply a very thin layer with a clean cloth and remove all excess primer.
• Important Note: Not for use on porous surfaces like stone or concrete, as it may cause staining.

Not to be used as a coating/barrier.
Not to be used on porous surfaces, especially stone as it may promote staining.
When applied in enclosed areas, the dry time of TREMprime Non-Porous Primer will be dramatically increased. As such, Tremco recommends adequate ventilation and air flow to promotesufficient drying times.
Storing or installing TREMprime Non-Porous Primer in cool or high relative humidity environments will dramatically increase the time needed for the TREMprime Non-Porous Primer to cure.