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Old 12-25-2013, 08:39 AM   #16
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James Hardie Install on Gable ends


a drain wrap like this

http://www.benjaminobdyke.com/visito...t/key/hydrogap

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Old 12-25-2013, 09:35 PM   #17
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James Hardie Install on Gable ends


I'm also going to install a PVC skirt board. Would it be acceptable to install a 12" wide ice water shield on the bottom then skirt board,flashing, house wrap and siding??
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Old 12-26-2013, 07:05 AM   #18
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won't hurt
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Old 12-26-2013, 01:56 PM   #19
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Where are you located and what type of sheathing- OSB, plywood, any foam board in the mix?

Gary
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Old 12-26-2013, 04:44 PM   #20
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I Am located Athens, Georgia it will be installed on OSB sheathing no foam board. Only worried about water penatration because I currently have vinyl with no moisture barrier behind it so I am getting a lot of water damage on the back side of my sheetrock.
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Old 12-26-2013, 10:19 PM   #21
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With your -50" of rainfall, http://average-rainfall.weatherdb.co...tlanta-Georgia
you need a drainable house wrap; https://docs.google.com/viewer?a=v&q...RvUBSlz4b5thmA

as Tom said, though that one only has 16perms. If you want to help dry OSB, get a dimpled/drainable that is higher than 28 perms to help it dry outward for your location;
http://repository.tamu.edu/bitstream...pdf?sequence=4

Gary
PS. The PVC skirt and sticky wrap are both vapor impermeable.
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Last edited by Gary in WA; 12-26-2013 at 10:27 PM. Reason: wrong link
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Old 12-26-2013, 10:38 PM   #22
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Further thoughts; with your high rainfall coupled with an engineered product (OSB) and a reservoir siding (fiber cement) have you thought about a "rainscreen" system? http://www.buildingscience.com/docum...gs?full_view=1

At least behind the PVC trim, 1/4" is all it takes to let it drain past the continuous contact top of each board; http://www.buildingscience.com/docum...term=hockey+pu

This would really be the best you could do for dry sheathing, and make sure the drainage plane includes new pan flashing for the windows/doors; http://www.buildingscience.com/docum...d-wall-systems
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Last edited by Gary in WA; 12-26-2013 at 10:59 PM.
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Old 12-28-2013, 07:36 PM   #23
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Thanks Gary for the info a lot of good reading. Is it common practice for rain screens in your area? I have never seen any homes in my area done with a rain screen.
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Old 12-28-2013, 07:39 PM   #24
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What do most of you do for mounting blocks for lights, outlets,dryer vents ect? Do you make your own or purchase some type of mounting blocks?
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Old 12-28-2013, 11:11 PM   #25
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Rainscreen walls are the norm (code required) in Canada, not so much around here (37" annual precip.) so don't need them as much....Tom S. is the one to ask on the light blocks, I usually make them, though I have trouble parting with $$. Lol.

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Old 12-29-2013, 10:27 AM   #26
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Mid-America has mounting block specifically for FC
http://www.midamericaworldwide.com/p...utility-vents/

but you can use the standard ones if you flash it properly
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Old 12-29-2013, 11:30 AM   #27
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James Hardie Install on Gable ends


i pretty much do the same install method as tom. the mounting blocks work great. its too hard to try to hang lights off the siding itself and theres no guarentee it will stay in place
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Old 12-29-2013, 12:53 PM   #28
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OK thanks you guys!! Lots of good info. I will post some pics soon as I get started.

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