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Discussion Starter #1 (Edited)
I am researching Hardiplank for re-siding my home. We live in the Yukon Territory, -40 to 100 deg F swings in year are not unusual. I would like to add a Energy Shield (polyiso sheathing by Atlas) layer around my house on top the studs for a thermal break. Then I would hang HardiPlank siding. However the Heavy HardiPlank would now be a minimum of 1/2" inch from the studs holding its weight. Is this going to be a problem over time with the nails bending and the siding "sluffing"; off the house? I may want to put 1 or even 2" Energy Shield up, at what point do I have to install strapping? Yukon Dave [email protected]
 

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I would think you would need strapping with 1-2" foam insulation. Are you going to use a 3" or 4" siding nail?
 

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Discussion Starter #3
Hanging Hardiplank, 1/2" away from the stud.

If the Hardiplank is not too heavy and I don't have to move/replace the window casings with the addition of 1/2" of Energy Shield (ES), I was evening willing to screw (~2" screw) the Hardiplank through the 1/2" of ES foam into the 2X4" stud. I'm not sure which is stronger siding nail or the screw. Probably the siding Nail.
 

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Rock16,
Thanks for the bulletin, I'm good till 1" without extra mounting hardware.

I have a lower level pony wall that is partially below grade. The pony wall consists of ~42" high concrete (~6" thick) with conventional 2x4 framing on top. I will be excevating and adding HS-40 high compression foahm below grade. I am unsure how to transition to the conrete from the 2x4" wall.

Could you point me to a bulletin on fixing hardi-plank to concrete?

Thanks for the help,
David J
 

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I think the seismic zone you live in requires full-sheathed walls under the foam board. You want more than 1" foam to bring the dew-point temp warmer so the water vapor won't condense on the inside of your sheathing, especially OSB (if used); http://www.greenbuildingadvisor.com...lating-minimum-thickness-rigid-foam-sheathing

http://www.greenbuildingadvisor.com/blogs/dept/musings/are-dew-point-calculations-really-necessary

http://www.greenbuildingadvisor.com/blogs/dept/musings/how-risky-cold-osb-wall-sheathing

Gary
 

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Rock16,
Thanks for the bulletin, I'm good till 1" without extra mounting hardware.

I have a lower level pony wall that is partially below grade. The pony wall consists of ~42" high concrete (~6" thick) with conventional 2x4 framing on top. I will be excevating and adding HS-40 high compression foahm below grade. I am unsure how to transition to the conrete from the 2x4" wall.

Could you point me to a bulletin on fixing hardi-plank to concrete?

Thanks for the help,
David J
The only way I know to attach Hardie over concrete is to strap with PT2x4 and attach to the 2x4. Or use a system like the northclad brackets.
 

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Is it worth it? Law suites against cement fiber manufacturers

James Hardie® products contain respirable crystalline silica, which is known to the State of California to cause cancer and is considered by IARC and NIOSH to be a cause of cancer from some occupational sources. Breathing excessive amounts of respirable silica dust can also cause a disabling and potentially fatal lung disease called silicosis, and has been linked with other diseases. Some studies suggest smoking may increase these risks. During installation or handling: (1) work in outdoor areas with ample ventilation; (2) use fiber cement shears for cutting or, where not feasible, use a HardieBlade® saw blade and dust-reducing circular saw attached to a HEPA vacuum; (3) warn others in the immediate area; (4) wear a properly-fitted, NIOSH-approved dust mask or respirator (e.g. N-95) in accordance with applicable government regulations and manufacturer instructions to further limit respirable silica exposures. During clean-up, use HEPA vacuums or wet cleanup methods - never dry sweep. For further information, refer to our installation instructions and Material Safety Data Sheet available at www.jameshardie.com or by calling 1-800-9HARDIE (1-800-942-7343). FAILURE TO ADHERE TO OUR WARNINGS, MSDS, AND INSTALLATION INSTRUCTIONS MAY LEAD TO SERIOUS PERSONAL INJURY OR DEATH.
 

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most people know that jemstone, that is marked on the packaging

as for foam, 1/2" foam is pretty much redundant, it doesnt provide enough insulation to be worth while. 1" is your best option, 1 1/2" is doable. with 2" foam your looking at a whole other can of worms..

defiintely strap over the foam nailing it to the studs
 
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