Window replacement
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remove trim/casing
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check/measure rough opening - 1/2" gap for leveling
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check/measure window
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remove old window
- try not to destory it
- if something goes wrong, you may need to put old window back in temporarily
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measure siding for nail fin clearance
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adjust siding for nail fin clearance - ensure holes will have adequate backing
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shim rough opening if needed
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test fit window
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check for level
- caulk and secure any R/O shims
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check center outside - window to siding
- equal distance top/bottom and right/left
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check center inside - window inside edge to drywall
- typical ranch casing 2-1/4" wide
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check inside window face to drywall
- should be flush, or less than flush
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flash sill corners with small pieces 3:00 mark here
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flash entire sill - 12" or so up the sides
- cover seams of corners
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test fit window again and level
- check center, inside gaps and outside siding
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caulk three sides or R/O
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insert window and level
- attach with screws
- screwing every hole is not needed - ok to skip every other
- screw is too tight if deforming nail fin
caulking https://www.amazon.com/PL-Polyurethane-10-Ounce-Cartridge-1618182/dp/B004BPCUGC/
screws Kreg Blue Coat - 2" pocket hole screws #8 - square drive
exterior window trim 5/4 cedar deck board - loose 3/4" of width to trimming of radius * 6" board comes out to 4-7/8" of usable width (with 1/8" saw blade cut)
interior jam extensions "Select" pine - 3/4" * measure for enough width from inside window to face of drywall
interior window moulding * ranch casing is pretty basic. fancier profiles available but +$$ * can get pre-primed * usually pine, some synthetic materials for wet areas