How To Install Window Trim: Corrugated Metal Siding Window Flashing Installation - Head & Jamb Trim

How To Install Metal Window Trim For Corrugated Metal Siding. Window Flashing Installation For Exterior Window Trim On A Metal Building. Step By Step Installation Instructions: Head Trim, Jamb Trim, And J Channel.

00:00 How to install window flashing for corrugated metal siding
00:55 Window head flashing or window jamb flashing?
01:14 How to install j trim around windows
01:56 How to measure a window with trim
03:42 How do you cut a window with metal siding?
04:04 How to notch cut for a window flashing installation
04:55 How to cut a 45 degree for a window trim installation
06:12 How to fasten exterior window trim for metal siding
06:22 How to overlap metal window flashing

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7/8" Corrugated

Corrugated Metal Siding Installation Details

Corrugated metal siding installation will require using metal head trim or metal jamb trim around the window openings. Window flashing must be measured and cut to fit correctly. In this video we give you installation instructions for window trim.

When you have a window with trim it requires two different types of cuts. Exterior window trim for a corrugated siding application has an notch cut and a 45 degree style. Window flashing installation is one of the more difficult metal siding installation details, but this video guides you through each step.

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[captainslogcabin]

Very helpful video and article, thanks for the presentation. This was the best video I could find on flashing a window installed in metal siding. I ended up using a Z shaped drip edge for the top, but it was easy to adapt from the method here. I used a barrier strip on the top to keep out bugs but didn’t seal the top edge, the idea that any water running down the inside of the siding would be able to escape, rather than getting trapped inside and possibly ending up as a leak on the inside of the window. Also made sure to catch the vapor barrier between the top flashing and siding, hopefully any water running down the barrier makes its way outside, rather than on the inside. The window I was replacing had years of caulk on the top edge, they must have thought that was where the leak was, when in reality it was a problem with the edge of the roof, making its way down the wall.

[michaelfarmer]

I really like the new video series! 😍 Great job guys!

[jaceklis]

Very good videos. Perfect for DIY and professional. Thank You!

[HarleyJune-gn]

so - is there a detail for lower corner? water runs down into head trim then down jamb and how is it diverted to exterior face of panel - ie - how does it not enter space behind panel?

[crazyoldgooseman]

how do you overlap your metal and fit it into the j trim at the top of the window and j trim on top of the wall?

[decevallos]

How would this work if my windows are retrofit?