hardi plank

2412 Views 5 Replies 4 Participants Last post by JohnCarpenter, May 17, 2009

jwms

Discussion Starter · May 16, 2009

Hey guys
I'm hanging a couple sheets of hardi vertical panel on the side of the house and have a question regarding butting up to windows. I put in a couple large new construction sliders with nail fin.

My question is: "Is there any problem with just butting up the hardi plank panel to the window and caulking?" I am not planning on adding any trim around the windows.

Thanks

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jaros bros.

· #2 · May 16, 2009

Some windows require a 1/4 space for movement. Do you know what the manufacturer's instructions were or have one of the pamphlets to review. Otherwise you should be fine although you will need to make sure the flashing details will work. Understand that the caulking should only be a secondary and not a primary defense against water infiltration.

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Tom Struble

· #3 · May 16, 2009

use a metal drip cap thats incorporated into your weather resistant barrier,leave 1/4'' space from the dripcap to the bottom of the panel and do not caulk the panel to the drip

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jwms

Discussion Starter · #4 · May 16, 2009

Thanks for the replys. Just pulled the instructions (duh) from the pile. Says to leave a min of 1/2 inch between exterior finish and window. Gosh that seems like alot.

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Tom Struble

· #5 · May 16, 2009

it does seem like a lot but its best to install as per manufacturers recommendation

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JohnCarpenter

· #6 · May 17, 2009

It will be almost impossible to keep water out from behind the siding unless you use the caulk as the main water sealing agent. (Not recommended) You really need to trim the windows and seal them properly. You don't want to come back in 5 years with rotten framing.

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Johnny Jackson
http://www.jljacksonremodeling.com

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