Grip-Rite MORE™ Backer Board and Underlayment is an innovative and versatile product designed to excel in the toughest conditions. It is 28% lighter*, on average, than leading portland cement backer boards. Use as a direct replacement for fiber cement, gypsum boards, OSB, plywood, and gypcrete products.
Free from VOCs, quartz silica dust, and other harmful chemicals, the eco-friendly formulation of Grip-Rite MORE is future-focused and aligns with current safety and environmental standards. This magnesium oxysulfate cement board (MgO) has enhanced flexural strength and impact resistance for a more durable and resilient tile underlayment solution. It cuts quickly without the use of power tools and is compatible with Pro-Twist Cement Board Screws (CB158) for secure installation.
MgO backer board is water-resistant and won't develop mold or mildew after prolonged exposure. Grip-Rite MORE has a Class A Fire Rating (ASTM E84) and sound-dampening qualities. Unlike foam-based cement boards, pests cannot penetrate and won't damage your project.
Revolutionize your residential and commercial building projects by embracing our premium tile backer board and underlayment.
Grip-Rite commits to compliance with international building codes and standards. Our portland cement alternative solution was evaluated by ICC-ES testing protocols. Click for more information and a full report ICC-ESR 5637.
*Based on average published weight of Hardie® Backer Board 1/4" Cement Board and Hardie® Backer Board 500.
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Lightweight - 28% lighter, on average, than the leading portland cement backer board
Eco-Friendly - Free from VOCs, quartz silica, and other harmful chemicals
Water Resistant - Resists damage and mold growth from long term water exposure
Fire Resistant - ASTM E84 - Flame Spread Index of 0 and Smoke Developed Index of 0
Durable - High flexural and impact strength
Code Compliant - 2021, 2018, 2015 IBC (International Building Council) & IRC (International Residential Code)
| SKU | Thickness | Dimensions | Pieces Per Pallet |
| GRMGO1235 | 1/2 in. | 3′ x 5′ | 40 |
| GRMGO1248 | 1/2 in. | 4′ x 8′ | 40 |
| GRMGO1435 | 1/4 in. | 3′ x 5′ | 80 |
