Your Advantages

  • Available in Two High Strength Formulas
  • Ultra/Bond® Compresses for Tight Tolerances Such as Overlays
  • Available in 10.1 Fluid Ounce Cartridges or Gallon Cans
  • Application Guidelines
  • Will Compress to 1/32" for Mirror Overlays Can Build Up to 3/4" for Uneven Surfaces
CRL Gunther Ultra/Bond® and Extra/Build® Mirror Mastics are high quality adhesives formulated to provide a strong, permanent bond between electro-copper-plated glass mirror and various substrates. Both have been field tested for compatibility with silver, copper, and mirror backing. Both have an easy working consistency year round, and will adhere to a wide variety of substrates including drywall, wood, metal, glass, marble, and tile.

NOTE: Not for use on acrylic mirror. Use Cat. No. GN8 Gunther Prime-N-Seal Primer on all porous substrates. Application guidelines are available online for all Gunther products. Mechanical support systems are recommended for all mirror applications.

Gunther Ultra/Bond®’s viscosity provides for a build out of 3/4" (19 mm), and can be compressed to 1/32" (.8 mm) for mirror installations requiring close tolerances, such as overlays, mirrored furniture, and medicine cabinets. At 72°F (22°C) it achieves approximately 30% strength in 24 hours, full cure up to 605 psi in 30 days. It comes in 10.1 Fl. Oz. cartridges and one gallon cans.
CRL gives no warranty, express or implied on any mirror mastic. It is the user's responsibility to determine the mastic's suitability to different types of mirror backing and each specific installation.

CRL Gunther Ultra Bond Mirror Mastic

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Shipping Information:
  • Hazardous Material - No Air Shipments