CRL Gunther Premier Plus Clear Mirror Mastic Adhesive

• Bonds to porous and non-porous surfaces
• Fast permanent bond while remaining very flexible
• Compressible to 1/16" (1.6 mm) for mirror overlays and close-tolerance installations
• Can be built out to 2" (51 mm) for large mirrors or uneven walls
• Ultra low VOC (10 g/l) — LEED® credit eligible
• NEW: Now available in plastic tubes
• Shelf life: 18 months

Gunther Premier® Plus Mirror Mastic (SKU: GN105P) is a high-quality urethane mirror adhesive designed for strong, permanent bonds between electro-copper-plated glass or acrylic mirrors and a variety of substrates. Ideal for heavy-traffic environments—gyms, dance studios, steam rooms, medical cabinets, mirrored furniture and commercial projects—Premier Plus is moisture cured, moisture resistant when cured, and absorbs movement and vibration while allowing thermal expansion and contraction. Use Gunther Prime-N-Seal (Cat. No. GN8) on porous substrates. Mechanical support systems are recommended for all mirror applications.

Performance & application: At 72°F (22°C) Premier Plus reaches ~30% strength in 24 hours and full cure in 7 days. Apply in 3/8" (10 mm) vertical beads spaced 5–6" (127–152 mm) apart and set away from edges to prevent squeeze-out. Approximate coverage: 7 sq. ft. per cartridge.

Key differentiators: compressible to 1/16" for mirror overlays, buildable to 2" for large or uneven installations, ultra low VOC formulation, now in convenient plastic tubes.

Product Warning:
Under no circumstance will CRL, Gunther Mirror Mastics or Royal Adhesives & Sealants LLC., the manufacturer, or the seller be liable for incidental or consequential damages arising from product use. Any damages related to use are strictly limited to the purchase price of the product. Customer accepts full responsibility. Follow all installation guidelines; refer to product literature or call 1-800-227-6181 for installation assistance.

For mirror-grade urethane adhesive trusted in commercial and residential installations, choose Gunther Premier® Plus (GN105P). Order now or contact customer service for specifications