Products / Interior / HardieBacker® 500 Board
HardieBacker® 500 Cement Board for walls and floors delivers superior protection against moisture damage and mold growth. It contains no paper facing, which serves as a food source for mold, or gypsum, which can disintegrate with continuous moisture exposure. HardieBacker board is an ideal choice for wet area walls; its smooth surface may be painted, textured, wallpapered, or tiled. HardieBacker® 500 board is available in a 3´x 5´ and 4´x 8´ sheet size and is backed by a limited lifetime product warranty.
HardieBacker® 500 Cement Board
Weight: 2.6 lbs./sq. ft.
Sizes: 3′ x 5′ – 4′ x 8′
90% Portland cement and ground sand. HardieBacker® board contains no asbestos, glass mesh, formaldehyde, or gypsum.
- Sheet Size:
- 3’x 5′
- 4’x 8′
- Thickness: 0.42″
- Weight: 2.6 lbs/sq.ft.
HardieBacker products achieve a perfect score on both industry standard mold tests. HardieBacker board scores a 0 (best possible score) on the ASTM G21 for mold resistance and a 10 (best possible score) on the ASTM D3273 test against mold growth.
HardieBacker® cement board is recognized as an interior substrate according to the following:
- National Evaluation Service (NES), Inc., Report No. NER-405 (BOCA, ICBO, SBCCI)
- City of Los Angeles, Research Report No. 24862
- City of New York MEA number 223-93M
- HUD Materials Releases 1263d and 1268c
- Tile Council of North America handbook
Based on typical Equilibrium Moisture Content: 2100 psi when tested in accordance with ASTM test method C1185.
HardieBacker® cement board is recognized for use in non-combustible construction in NER-405.
Surface Burning Characteristics
When tested in accordance with ASTM test method E-84:
(Approximate value) 1/4” thick: R:0.13