How To Flash A Window Sill, Jamb, And Header And Properly Install A Window!

How To Flash A Window Sill, Jamb, And Header And Properly Install A Window!
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[sonomafred]

If window was installed on high-exposure gable-end wall, then drip cap absolutely necessary; however, with over two feet of eave directly above, it's hard to fathom how any water could reach that area, and I've seen drip caps actually make matters worse by providing a "break" in the stucco for water to enter due to thermal expansion in the sun. So, having flashed windows for close to fifty years, I think their use is a judgement call based on the location of the opening.

[garylangley]

Thanks!! I have one window to replace which my son and I will do this Saturday, if the good Lord is willing, and the creek doesn't rise.

[DPAFF]

Greate job, I found and see that the younger so call window installer don't believe in seal tape or drip caps, they want to do a quick job and move on! I'm glad you show and do it the right way.

[bradybailey]

Nicely done, I’m a professional window installer. It’s refreshing to see windows installed properly. Drip cap is a necessity!! Love it

[teraxiel]

My only critique would be that the small pieces of sill flashing that got put in the corners should have gone on first so the the sill properly shingled over them, and to add a little bit of liquid sealant in the corner where the cut was made. This location in windows is notorious for leaking.

[desmo]

Watched alot of techniques. A couple of things that seem like good practice not shown here are to use spacers to create a small gap between the window bottom and sill pan, and even to draft the house framing outward if possible (piece of beveled clapboard). And I learned the hard way that the drip cap or head flashing needs to be “dammed” on each side so it doesn’t divert water down the side of the window and under the trim or siding (and it’ll eventually get behind the tape at the flange and directly onto the OSB because now you have no tyvek or tape there, under the flange, in your integrated system).

[houseonahillok]

I just watched 10 or so window installation videos and this is the most complete one. Thanks for the help.

[manuellima]

This is so far the best video that I've watched and searched to learn about window installation. Congrats and thank you! You should dedicate your self to teaching people on youtube!

[randrl]

Very good video... You have an easy going way of explaining each step. It's funny how different videos have the house wrap go inside the window frame. I think I'm gonna follow your method, the integrated method. That drip cap was very interesting - first time I saw that.

[dutch]

Thanks for this. I just installed some double hung vinyl windows and all the older videos I watched always had the wrap cut and pulled into the window opening. Never really made sense. And there are a couple a couple windows on my house installed that way, because that was the instructions….

Appreciate the better explanation and install.

[timbarclay]

Love the video. Not enough construction teachers in the world. Love the comedic element where you call the DAP ALEX sealant. 😂

[royalicing]

That was awesome!!! THANK YOU SO MUCH!!!

[CornelioAustin]

thank you 🙏🏾 this was GREAT and easy to understand

[cliffordbecker]

thanks again. great work and instruction.

[edwardscott]

I do commercial exterior finishing up here in the northwest. On almost every project, we also cut the WRB back about 2 inched from the R.O. but when we put the membrane on the R.O., we wrap the whole thing before the window goes in, and post wrap. We also end dam all of our head flashings, especially since we always build out a rain screen gap, and without the end dams, water would just run behind the cladding

[zimmz]

Did you just use DAP acrylic paintable caulking on the outside of your building as a water barrier instead of a Silicon caulk or one properly rated for weather use?

[ouchymytoe]

Almost perfect! I believe the water-resistant membrane should actually go OVER the flashing membrane on the jamb. Do, flange, flashing, then membrane. If you wanted to do overkill, you could then put another layer of flashing over the membrane. (This is per Northwest Wall & Ceiling Bureau.)

[willymamma]

Perfect technique! Thank you for sharing the tips, tricks and secrets from the pros!

[whitdonaldson]

Thank you for demonstrating this correctly! I can’t believe how many people posing as professionals making videos of incorrect window flashing! Or no flashing at all. I’m trying to send a demo video to a friend and I couldn’t find one until yours. I would only echo one commenter that the flashing in the lower corners might go first and all the way back. But thank you! We’ll done.

[rcrowman]

Most jurisdictions do require the drip cap over the top of the window. I'm a retired City Building Inspector for San Antonio and then Augusta, Georgia. We would fail the inspection if there was no flashing/drip cap above the window. I do agree and appreciate how well you explained each step of proper installation. I will be building my own house very soon and I will be following the same steps you explained here. Thank you. Inspector RC