I am replacing some existing wood windows in a 90 year old house. I have also removed the 1 x 5 exterior casing trim around the openings. I need to figure out a way of lifting up the existing beveled wood siding on the two jambs so that I can slip the peer & stick flashing under the siding and wrap the flashing into the window opening. I feel that this is very important because the joint between the siding and the casing trim is typically filled with caulking and is not fail safe method of preventing water from getting behind the joint. I live in a wet environment in Seattle and water is our worst enemy here so I feel I need to be cautious.
Any handy tips?
Work a slice of AL 6" wide into there. Then wrap the openning to it.
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I think there was a tip in the magazine about just that. He started some screws into the wood he needed to raise and then used a bar to pry the wood away. With a suitable gap created, he then drove the screws a bit further into the framing. The screws bridged the gap and held it. Worked great for me on T1-11 that I installed windows into and then slid the flashing up behind it. Flashing was a peel and stick, so the gap was essential.
Don't forget to deal with the sill first. That's the biggie. I would consider having some sheet metal pans made for the sills and possibly 90-degree flashing for the sides. Getting peel-n-stick behind existing siding requires a large gap and ideal conditions. Sheet metal will be a lot easier, and probably a lot better. I know there's tin men down there.