Custom Bldg Products MSMG50 Gray Modified Thin Set Mortar 50 Lb

Product Description

The CUSTOM BLDG PRODUCTS MSMG50 is a polymer-modified thin set mortar designed for professional tile installation across a wide range of substrates. Sold in a 50-pound bag in gray, this mortar meets ANSI A118.4 standards for modified dry-set cement mortars, making it a reliable choice for tile contractors and flooring installers who need consistent bond strength on standard projects. The formula incorporates Moldgard technology, which provides built-in protection against mold growth within the mortar body. It delivers good adhesive bond strength without the added cost of higher-performance formulations.

This mortar is suited for residential and light commercial tile installations where a basic, economical polymer-modified mortar meets project requirements. It is appropriate for setting ceramic, porcelain, and similar tile types over most common substrates. Flooring and tile contractors typically reach for this product on standard floor and wall applications where ANSI A118.4 compliance is specified or preferred by the project scope.

Key Features

• Meets ANSI A118.4 for polymer-modified dry-set mortar performance
• Moldgard technology provides mold resistance within the cured mortar body
• Polymer-modified formula offers good bond strength over most common substrates
• Gray color works with standard grout joints without telegraphing through lighter grouts when used correctly
• 50-pound bag unit sizing suits standard commercial purchasing and jobsite use

Compatibility

Designed as an ANSI A118.4-compliant polymer-modified thin set mortar for tile installation over most common substrates in residential and light commercial applications.

Installation Notes

Tile and flooring contractors should mix this product according to the manufacturer directions and allow proper slake time before final mixing. Substrate surfaces must be clean, flat, and free of bond-breakers such as dust, oil, or curing compounds prior to application. Follow applicable TCNA handbook guidelines and local building codes for substrate preparation, tile type, and environmental conditions. Do not apply over substrates with active moisture intrusion without appropriate waterproofing measures in place.