James Hardie HardieBacker 500 Cement Board - 1/2"

HardieBacker 500 (1/2") is used in place of regular drywall and is ideal for kitchen and bathroom installation due to its outstanding resistance to moisture.

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HardieBacker 500 Cement Board is resistant to damage from moisture. It contains no paper facing, which serves as a food source for mold, or gypsum, which can disintegrate with continuous moisture exposure. HardieBacker 500 is an ideal choice for wet area walls; its smooth surface may be painted, textured, wallpapered, or tiled. HardieBacker 500 Backerboard is available in a 3 x 5 ft. sheet size and is backed by a limited lifetime product warranty.

HardieBacker 500 is 90% Portland cement and ground sand, and contains no asbestos, glass mesh, formaldehyde, or gypsum.

HardieBacker 500 Sheet Size:

  • 3'x 5'
  • Thickness: 0.42"
  • Weight: 2.6 lbs/sq.ft.

Flexural Strength
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:

  • Flame Spread: 0
  • Fuel Contributed: 0
  • Smoke Developed: 5

Thermal Resistance
(Approximate value) 1/4'' thick: R:0.13

90% Portland cement and sand, no loose aggregate or filler, highest flexural strength and up to 3x the compressive strength of competitive cement boards.
Installs better - Easy to cut to any size and clean cuts allow edges to align tightly and less dust and debris when cut.
HardieBacker’s unique cement formulation helps prevent damage from moisture and provides excellent tile adhesion to help protect tile work.

Download Installation Guide Download Safety Data Sheet

More Information
ManufacturerJames Hardie
WarrantyLimited Lifetime Warranty
Manufacturer Part Number220020
Size (L x W x H)3'x 5' x 0.42"
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