Is this something incorrectly installed? It doesn’t function as a drip cap and if it’s a J moulding, then it should have tabs bent over the sides. I’m not sure how to write this up.
Great to meet you, Pam, Welcome to the committee.
I concur.
Here is what I gleaned:
No, J-trim cannot be used as a drip cap. A drip cap is an L-shaped flashing that is installed above a window to help direct water away from the window frame. J-trim, also known as J-channel, is a trim piece used to provide a clean finish and water protection around window and door openings. While J-trim can be used around windows, it is not designed to function as a drip cap and would not be appropriate for that purpose.
Let others chime in.
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It looks like the window has built in J-channel. Undersill would have been a better choice above the window, but siders tend to use J-channel for everything. Nothing to note.
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I see a J-trim and below that I see a flashing nothing to write about, from here.
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Thanks for the input guys. Just looks like it’s interfering with the drip cap and would direct water towards the house rather than away.
Vinyl siding is not meant to be waterproof. House wrap under the siding and how windows are flashed is the real concern.
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I understand your point Pamela. I am on a different view than nothing to report.
Drip cap length rules: Generally, window drip cap length rule dictates, the drip cap should extend at least 1/4 inch beyond the trim profile that it’s protecting, and should have an outward kick.
In your case I see no outward kick nor 1/4 inch beyond the trim profile.
For siding installed over trim with a drip cap, a 3/8-to-1/4 inch gap should be left between the drip cap and the bottom of the siding to prevent water trapping.
WRB if installed correctly protects the home from moisture and and weather intrusion. Did I mention when done correctly and no mechanical damage has occured.
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You’re right, there’s really no drip cap at all. Thanks for pointing out these parameters. I don’t want to be alarmist about this but I’ll find a way to add a note or diagram showing an ideal drip cap.
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Very nice! Thank you
Hi Marcel.
The drip cap is angled to act as a capillary break, as well as formed/molded/manufactured one piece to wrap over and protect the top of the window frame.
As well there is a sealant, caulking sealing the opening between the mixed material. The siding, the drip cap and the J trim. That is protection.
That sealant will prevent water water from entering the opening.
Compare it to Pamala’s image.
No drip cap.
No sealant.
Opening that may allow weather/moisture/bulk water.
Added to my standards library. Thank you!
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My pleasure.