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Old 06-04-2011, 01:01 PM   #1
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Vinyl Siding - What to do about stepped foundation and chimney?


I want to start re-siding my house soon but have a few questions on what to do about the two issues below.

Issue #1: Interface with chimney

One side of the house has a chimney and won't be covered with vinyl siding (See first and second pic). Would corner flashing be used and adhered to the chimney? I'm at a loss on how to ensure the chimney/siding interface is protected properly.

Issue #2: Stepped foundation

The house is on a sloped grade so the foundation has two 8" steps in it. The last pic shows the location of one of the the foundation steps drawn in black.

I wasn't going to originally, but now I plan on installing skirt-board/water table board around the perimeter of the house. What's the best way to deal with these steps? Just simply install the skirt following the foundation steps and install starter and j-trim as required?

How would you deal with this if no skirt-board was installed? Angle the starter strip or make the siding stepped as well?

Any pointers would be great!

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Old 06-05-2011, 09:24 AM   #2
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i would get some foam backer rod that fits tightly between the house and chimney and use a good urethane caulk to seal it to the house,i typically bent an L shaped flashing,the size would depend on how big the space is but usually there would be maybe 2'' leg onto the chimney,set this into a heavy bead of urethane sealant followed by the j

don't angle any starter,either drop down the high side if possible or follow the step


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Old 06-05-2011, 09:41 AM   #3
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I will add, if all of your steps are 8” consider a D4 (8”) panel. That way with each step you’ll be able to continue with starter strip and always have a full panel for the bottom coarse.
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Old 06-09-2011, 11:05 PM   #4
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Thanks for the tips. I figured flashing would be the best option but wasn't sure if there was anything else needed. I'll just grab a roll of flashing and use the brake at work to get some nice crisp bends. I've got a bunch of NP1 urethane sealant that worked great with my windows. Should work fine on the flashing.

As for siding panels, I'm installing a triple 3 profile which is just over 9". What I might do is simply lap the boards over the foundation by an extra 2" on the lowest point and an extra 1" on the first step. That way I'm always using a full panel. I'm pretty sure the housewrap extends 2" on the foundation so at least I don't need to install any extra moisture barrier. I'm installing 2x10 boards so there will still be a lot of material to secure to studs. I just need to check how close to the ground that 2" will put it.

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