Gunther Extra Build Mastic – Cartridge (Black)

Product Description

Gunther Extra Build Mastic is a heavy-duty mirror adhesive specifically engineered for installations that require significant build-out and exceptional bonding strength. Designed to build out up to 2-1/2″, this mastic is ideal for uneven surfaces and demanding applications where standard adhesives are not sufficient.

Formulated to bond securely to a wide variety of substrates, Gunther Extra Build delivers 25% strength within 24 hours and achieves full cure in 30 days, ensuring long-term durability and dependable performance. It is suitable for both small projects and large-scale installations, and is available in convenient cartridges as well as economical gallon pails.

For enhanced safety and stability, GLAZE recommends using mechanical fasteners in conjunction with any mastic installation.

Features & Specifications

• Heavy-duty mirror mastic for high build-out applications

• Allows build-out up to 2-1/2″

• Bonds to a wide range of substrates

• Achieves 25% strength in 24 hours

• Reaches 100% cure in 30 days

• Available in cartridges and gallon pails

• Suitable for small and large-scale installations

• Mechanical fasteners recommended for optimal stability

• Case quantity: 24 tubes