We had a new roof put on the summer. When the old roof was taken off, it was so thick it left a big gap between the bottom of the house shingles and the porch roof. The contractor finally sent someone out to fix it. Here is a picture of what the area looks like now. The carpenter said this gap needs to be there because otherwise the rainwater will rot the house shingles.
My sister says the area in the gap will rot. I emailed the contractor and sent him pictures of the job his workman did and he said yes, that is the way it is supposed to be done. The flashing is inside there.
Well, he's right.
The gap is there so water does not absorb into the wood.
All homes should be done this way with a 3/4 inch to 1 inch gap.
My company only uses copper flashing so it shows itself, not that shiny tin everyone sees from down the block.
Now you get to paint them, and the window.
Good contractor, usually they do it wrong so they can replace the wood siding in 5 years, keeps em busy.