CRL Gunther Extra/Build® Mirror Mastic

• Available in Two High Strength Formulas
• Builds Out to 2-1/2″ (64 mm) without Sag
• Ideal for Large Mirrored Walls and Uneven Surfaces
• Available in 10.1 Fl. Oz. Cartridges or Gallon Cans

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 but should be tested for Bleeding.

Gunther Extra/Build® viscosity provides for a build out of 2-1/2″ (64 mm) without sag for custom mirrored walls or vanities, where construction is such that there are gaps of over 3/4″ (19 mm) between the mirror and the substrate.

Notes: The following chart indicates the rate of curing for Gunther extra/build.
Approximate Percent of Maximum Strength:
@ 24 hours – 25%
@ 3 days – 50%
@ 7 days – 75%
@ 30 days – 100%

• Curing time will depend on temperature and the amount of air to reach Gunther extra/build. A 4-inch spot will cure faster than a 6-inch spot.
• Mounting Time – Mirrors can be mounted up to 20 minutes after application of Gunther extra/build.
• Adjusting Time – Gunther extra/build can be adjusted for a period of 24 hours after installation, to ensure proper mirror alignment.

SHS Part Numbers: GN200A