Tiny house, minimal eaves, lots of rain–Help with windows and siding
Hey all,
My Name is Justin. Currently building a tiny home on wheels in Hawaii, with not too much experience and some help.
Due to width restrictions we could not design much for eaves on the long sides of our build. We have lots of windows that are beautiful reclaimed port orford cedar, but they have no window flange. I flashing taped them to create one basically. I am in a spot now where a builder friend has advised I redo some of the flashing work by taking some the the aluminum siding down to make a bigger drip edge, both longer and further out from building to save it so much of the water doesnt even pass by the window openings. I think its a good idea, although a bit defeating as now I have to redo some work. At this point I am re considering taking all the shingles down as we got them for free anyway and considering going corrugated metal siding as I have to order a bunch new flashing anyway. I just want this things to be as waterproof as possible. Seems like J trim would be the best way to go? I was told just L and thats the way i was going but now I see this as a potential for water to get behind siding. Anyway would like to get some ideas and eyes on it. Going backwards sucks but Im taking it as an opportinuty to go forwards with a better design. Like I said, we get lots of rain but lots of sun too. I have attached photos of some of the build, both where we have sided and havent. Thanks in advance!
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Replies
Justin,
- J trim for the bottom and sides of windows and doors. Bed the flashing in caulking against the frames:
https://shop.metalworkscanada.com/products/j-channel
- Head flashing with a drip edge and end-dams over the windows:
https://hammerandhand.com/best-practices/manual/1-flashing/1-2-head-flashing/
- Wall Base (12th image):
https://www.westform.com/application/files/7415/8586/1069/12-36_Flashings_NP_2020.pdf
- At the corners I like to use the profile I have attached in the photo. The second picture is of it installed.
I would use these details whether you use the shingles again, or corrugated metal.
How often do you plan on moving this? I would just build a seperate porch roof structure to protect the windows if this is going to remain in one spot for more than a few years.