SpeedSet Fortified Thin-Set Gray Mortar 25 lb. Bag

Custom Building Products SpeedSet Thin-Set Mortar Gray is a high-performance, polymer-modified mortar designed for fast, reliable tile installations in both commercial and residential settings. This gray, fortified blend delivers exceptional bond strength and rapid cure times—allowing grout application in as little as 2 hours and light foot traffic in just 6 hours.

Ideal for a wide range of tile types and substrates, this mortar exceeds ANSI A118.4 and A118.11 standards without the need for additives. Whether you’re working with porcelain, natural stone, or glass tile, Custom SpeedSet provides the consistency and durability required for high-quality results.

Key Features

• Quick-setting formula: grout in 2 hours, light traffic in 6 hours
• Polymer-modified for enhanced bond strength and flexibility
• Fortified blend of Portland cement, inorganic aggregates, copolymers and performance chemicals
• ANSI A118.4 and A118.11 compliant—no additives required
• Suitable for interior and exterior installations, including cold-temperature environments
• Works with a variety of tiles: ceramic, porcelain, glass, stone, quarry and more
• Adheres to multiple substrates: concrete, cement backerboard, waterproofing membranes, plywood (interior dry areas), gypsum wallboard and existing tile

⚠️ WARNING: This product can expose you to Silica, crystalline known to the State of California to cause cancer and Chromium (hexavalent compounds) known to cause birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.