This means you need to cut kerfs in the trim to set it down over the end dams in the head flashing.
How to cut in ends of siding window frame.
From the path of the blade.
Cut a square end on a piece of casing and stand that end on the stool.
For a mitered corner.
Close a gap on the top of a miter by placing a skinny 1 16 in.
Measure and cut pieces of 1 by 2 inch vinyl corner molding to trim the top bottom and sides of the window in the opening.
Cut a 1 inch notch out of the j molding at both ends by scoring it with a utility knife across its top side.
The rain screen battens are run down to the top of the window flange.
Keep your fingers at least 6 in.
Apply a bead of glue to the casing where it overlaps the side jamb and on the end that sits on the stool.
Cut out the notch with your saw and slide the piece into place leaving a 1 8 in.
At the head the panel is kept up about 3 8.
Or less shim against the portion of the fence farthest from the blade.
Install the notched siding under the window.
True up cut ends with a rasp or a sanding block.
Inside the house use the reciprocating saw to cut through the nails.
Line up its edge with the reveal line.
Save pieces to reuse.
Mark the inside of the window and one inch past that mark.
Repeat on the opposite side.
This video shows how to trim around half round and quarter round windows and accents.
The cement board panels are fastened to the battens.
Cut all the way to the first mark and remove the extra material then cut to the second mark then bend to create a tab.
Mark the inside corner of the window then draw a 45 degree angle.
Cut 45 degree angles on the ends of the pieces with a miter box and.
Remove the aluminum trim image 1 as well and be careful not to damage the siding.
Slide the trim molding tight to the shim and against the fence near the blade.
What is the differance between a replacement window and a new construction window the fins the manufacturer says that you can cut the fins off if you like this is a double hung window depth 31 2 and a single hung is 25 8 this might present a problem with appearance that the double hung might extend to far beyond siding i like to figure everthing out before starting the opening is plume and.
Hold it in this position while you make the cut.
Lay the cap against the window frame.
Also remove any trim material to expose the nails that hold the window in place.
Mark where its inside edge meets the head jamb s reveal line.
The horizontal window trim at the head is kept up 1 8.
Cut the frieze board to length with a circular saw using a rafter angle square as a cutting guide.
Use tin snips to cut a length of j molding 2 inches longer than the width of the window.