Portland cement, ground sand, cellulose fiber, select additives and water.
Hardiplank contains no asbestos, fiberglass or formaldehyde.
Weight: 2.3 lbs./sq.ft.
Smooth and Cedarmill
6 1/4" (5" exposure)
8 1/4" (7" exposure)
9 1/2" (8 1/4" exposure)
12" (10 3/4" exposure)
Colonial Smooth and Colonial Roughsawn
8" (6 3/4" exposure)
Beaded Smooth and Beaded Cedarmill
8 1/4" (7" exposure)
All Lengths: 12'
Hardiplank lap siding is recognized as exterior claddings in National
Evaluation Service (NES), Inc., Report No. NER-405 (BOCA, ICBO, SBCC8);
City of Los Angeles, Research Report No. 24862; Texas Department of
Insurance; United States Department of Housing and Urban Development; and
City of New York MEA No. 223-93-M. These documents should also be for
additional information concerning the suitability of this product for
James Hardie fiber-cement building products are autoclaved, will not rot
and resist permanent damage from water and salt spray.
Typical based on Equilibrium Moisture Content in accordance with ASTM test
Along direction of sheet: 1850 psi
Across direction of sheet: 2500 psi
Hardiplank siding is non-combustible and shows no flame support or loss of
integrity when tested in accordance with ASTM test method E-136.
Surface Burning Capabilities
When tested in accordance with ASTM test method E-84:
Flame spread: 0
Fuel Contributed: 0
Smoke Developed: 5
5/16" thick: R = 0.15
*Refer to National Evaluation Service Report No. NER 405.
The NER-405 report can be downloaded in
Adobe's PDF form at: http://www.jameshardie.com/ner.htm
Finish the job by painting Hardiplank with a high quality, exterior grade,
100% acrylic latex paint which may be sprayed, rolled or brush applied.
Hardie sidings have excellent paint retention qualities that will keep
your siding looking great well after other sidings need repainting. But
remember, paint performance is dependent upon the quality of paint applied
and the conditions under which it is applied. Always follow the paint
manufacturer's written recommendations for
application and maintenance of field applied paints.
Hardiplank lap siding is available in a variety of textures: Smooth,
Cedarmill, Colonial Smooth and Colonial Roughsawn. Smooth shows a smooth
surface. Cedarmill offers a knotless timber-grain appearance. Colonial
Smooth has a smooth-sanded appearance, with a channel lap shadow line.
Colonial Roughsawn offers a timber-grain appearance, with a smooth channel
lap shadow line.
James Hardie exterior siding products are protected by a 50-Year Limited,
Transferable, Product Warranty. Copies are available wherever James Hardie
products are sold or from James Hardie Building Products.
The above information is based on information provided at
and printed publications produced by James Hardie Building Products.