How to Install External Architraves & Window Head Flashing (Step by Step)

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HowTo external architraves install architraves how to fit architraves weatherboard cladding finish James Hardie Linea cladding window head flashing install DIY architrave installation cutting architraves hack external window finish timber architraves

If you’ve ever struggled to get your cladding to finish neatly against windows, this step-by-step guide to installing external architraves will show you exactly how it’s done. In this video, I cover everything from measuring and cutting, to fitting the window head flashing, to sealing and finishing for a sharp, professional result. I also share my favourite architrave cutting trick that saves time and eliminates the need to chase short points on mitres.

Whether you’re working with James Hardie Linea weatherboards or another type of cladding, the same principles apply. By the end, you’ll know how to get clean lines, tight joints, and a durable weather-sealed finish around aluminium windows. Watch through to see the full process of fitting external architraves and learn a few pro builder tips you can use on your next project.

Music
DeKobe - Small Problems

TIME CODE
0:00 - Intro
0:59 - Cutting architrave trick
3:39 - Pre drill and paint mitres of architraves
4:46 - Architrave details, cladding and window head flashing explanation
5:37 - Timber architrave installation
6:20 - Weather board and architrave installation detail
7:15 - Finishing details of filling, sanding and sika flex.
7.24 - Painting and conclusion

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Website
https://greysand.com.au

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