Installing 2 Vinyl windows with no nail flange in a 6″ opening depth
I’m turning our sunroom into a finished space. The current slider windows are 2 be replaced by 2 vinyl single hung units (73″ x 52″); each unit has a 2 single hungs and a vinyl joint between each to make it a solid unit.
The current sill is sloped 2×8. Based on my recommendations and manufactures install is to shim sill at 24″ and jambs at 16″ (only fastening the jambs).
They say if > 65″ wide consider fastening through the still; but from the advice I’ve been given from contractor and rona is to not fasten on the sill as it could compromise drainage.
My plan was to trim down the 2×8″ sill and make it flush with exterior 1/4″ sheathing and bring the house wrap overlapping the inner opening and install a self adhesive flashing over the sill jambs and header.
One recommendation I has was to use a j-mould over the sill. But I think self adhesive flashing would be better. If I go with self adhesive, what would be the best trim options to use? Fiber-cement siding is to go over the exterior.
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