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Is this standard practice (joint flashing behind siding butt joints)?
Posted on 2/16/26 at 7:46 pm
Posted on 2/16/26 at 7:46 pm
quote:
Horizontal siding should have joint ?ashing behind all butt joints to prevent water in?ltration. This hidden layer protects the sheathing from moisture damage over time.
5
Posted on 2/16/26 at 7:50 pm to Will Cover
Yes
Note: I am not a professional but installed all the hardi siding and trim on my house. Hardi has installation details for their products and joint flashing is part of their detail.
Detail H here
LINK
I used the foil joint tape that I cut into pieces. It’s too easy NOT to do.
Note: I am not a professional but installed all the hardi siding and trim on my house. Hardi has installation details for their products and joint flashing is part of their detail.
Detail H here
LINK
I used the foil joint tape that I cut into pieces. It’s too easy NOT to do.
This post was edited on 2/16/26 at 7:55 pm
Posted on 2/16/26 at 7:53 pm to Will Cover
I cant imagine not doing it.
eta: shouldn't be hard to find the manu's installation procedure online to be sure.
eta: shouldn't be hard to find the manu's installation procedure online to be sure.
This post was edited on 2/16/26 at 8:00 pm
Posted on 2/16/26 at 8:06 pm to Will Cover
Yes. If you don’t have the flashing, strips of roofing felt will do.
Not a fan of the “stair-stepping”. Especially at only 16” offset.
Not a fan of the “stair-stepping”. Especially at only 16” offset.
This post was edited on 2/16/26 at 8:08 pm
Posted on 2/16/26 at 8:24 pm to 9rocket
quote:
Not a fan of the “stair-stepping”. Especially at only 16” offset.
Agree, especially in a span like that where you can use a full board. Where I had long runs I stepped at 48”.
Posted on 2/17/26 at 9:07 am to Randall Savauge
quote:same, much easier
foil joint tape
Posted on 2/17/26 at 9:27 am to Will Cover
I clicked on this thinking it was going to be about woodworking butt joints. My top 3 butt joints i use are mortise & tenon, dowels and dovetails. Followed by splined miter joints with the splines a different color for contrast.
Im going to be doing some doweling with my DowelMax jig later this afternoon. If anyone ever gets into woodworking, i highly suggest the DowelMax jig.
Im going to be doing some doweling with my DowelMax jig later this afternoon. If anyone ever gets into woodworking, i highly suggest the DowelMax jig.
Posted on 2/17/26 at 12:36 pm to Will Cover
Yes, but I have no idea why they didn’t just use one solid piece right there. There was no need to stair step right there and have to use flashing. A waste of time and material
Posted on 2/17/26 at 6:49 pm to jorconalx
quote:
no idea why they didn’t just use one solid piece right there.
Probably helps I'm seeing it on a laptop and not a phone, but what looks like a corner wall is actually a steel post/structure of sort. The wall continues on indefinitely. Still doesn't excuse the stair stepping though.
Wish OP would update as to why he was wanting to know. Show up to his new build and see the mexicans had half the house sided without joint flashing?
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