How to install J-Channel around an opening

This is 100% NOT how you install J-Channel. Anyone watching this, do not listen to this person, he is absolutely wrong.

I have a leaking window on the inside of my house when it rains....maybe because whoever did the siding on my house ....maybe did not use J channels around the entire window before they sided... just my guess....After watching your video ....thanks. I guess I’ll have to get someone to take the siding off and have a look at what’s around that window and maybe every window in my house..

Thanks first time doing j channel and it came out great!

Damn i needed this video yesterday. Might go back and fix it

Very nice, detailed video (with everything visible). I am about to do some finishing trim work on a shed I rebuilt last summer and this will help with those last few, but still important, details!

You are the first person I have seen address the problem of j channels allowing water behind the siding. No one else seems to understand (or they simply ignore) the problem. That is a great idea for dealing with the issue, thanks very much for sharing your idea.

Good job!

Nice job, can’t wait to try that method when I side the house and garage this summer.

This is exactly how I cut my J Chanel a guy I worked with 5 +years ago showed me this and Ive tried to show others that just square cut and but maybe fold over the middle but they never want to listen they no what there doing .I usualy measure and cut all four sides then install I'll Even put it all together and slide it on

Fuking awesome

The siding is supposed to be able to expand and contract how can it with staples ? It’s should be floating

Nice video man! I own my own siding and gutter business and that’s some top notch work, I liked the bit where you showed what trim coil can do to help with potential rot!

Plygem, Mastic, and Georgia Pacific all offer exhaust vents that have the J-channel already integrated into the vent. And I don’t think the first two brands are much more expensive than what I see in this video - but the labor saved and the much nicer finished look make it worth using them.

Awesome work installing. Much appreciate the tutorial. Probably best I've seen so far and I've seen allot of videos.

I've never seen staples being used on J's, I'm tempted to try it as I'm getting ready to side my walls on my new deck. I'd rather do this than hit it with a hammer as the weather is getting colder here in the St. Louis Area.

Thank you , very nice advice . It help me with my home prodject