New construction windows on old shingles
nbrauner
| Posted in Construction Techniques on
I am installing new construction windows on an old ballon framed house. There is no seathing and the shingles sit on 1×2 nailers nailed directly to the framing. I need to cut back the shingles for the window trim. What is the best way to create a water tight building envelope short of removing all the shingles and nailing on plywood sheathing?. I have been thinking of cutting the nails and running a 12 in strip of plywood behind.
Attached is a sketch
Replies
Is the cut line of shingles you show the finished edge of the shingle?
I see you could fasten the ply to the framing next to the window, but what holds the outside edge?
How will you join that ply with the stripping?
In order to properly keep the water out of the envelope (sort of envelope) would be to vicor or similar flexiflash behind the shingle/trim line. You'd need to pull shingles away or remove to do that. Wide flexiflash all the way to the window opening and over the fins if you have them.
At least I'd give that some serious thought
The shingles extend now and need to be cut back to the cut line. I plan on fastening the plywood to the strips with an overlapping piece of plywood fastened to both. Do you think aluminum flashing would work in place of flexiflash or vicor. I'm not familiar with those products
Not sure what fins are.
Thanks
Aluminum, I feel harder to work with except as a head flashing.
New construction windows I'm familiar with are usually equiped with fins around the perimeter-you fasten the window by nailing/screwing through the fin.
Flexible flashing, you want brands that go with vinyl if your windows are such, regular vicor will work with aluminum clad windows.
Take a look at the download instructoins for your windows-most companies will explain what I'm referring to.
You'll have refigure the house wrap they utilize to keep out the water.