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James Hardie
Backerboard |
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Glass Mesh
Backerboard |
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Gypsum
Backerboard |
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| Resists Crumbling |
Yes |
No |
Yes |
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Permeability
(water penetration) |
Low |
High |
High |
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Lightweight
(1/2” thickness) |
2.6 lbs./sq.ft. |
3 lbs./sq.ft. |
2.3 lbs./sq.ft. |
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| Water Absorption |
Low |
Low |
High |
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Easy to Score
and Snap |
Yes |
No |
Yes |
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Abrasive to
Porcelain/Enamel |
No |
Yes |
No |
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Preprinted Fastener
Pattern |
Yes |
No |
No |
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| Flexural Strength |
High |
Medium |
Low |
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Compressive
Strength |
High |
Medium |
Low |
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| Cuts Cleanly |
Yes |
No |
No |
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Proprietary
Cement Formulation |
Yes |
No |
No |
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