The most fluid cuts are done by putting the blade in backward.
How to cut siding for new window.
Then add 3 4 on all sides to allow some wiggle room to make the window plumb and level.
How i most likely would try to approach this would be to remove the siding you need so you can flash it nice.
Instead remove any nails then use a siding removal tool to separate the siding panels.
Extract nails keeping the vinyl pieces in place in order to prepare vinyl pieces to be removed.
Make the line as dark as possible so it s visible when you re cutting it.
If you can t i would cut the siding back say at least 3 1 2 bigger all the way around flash it best you can and trim then j around the trim.
Remember to add the end caps to the window sill and to glue them in place in order to hide the hollow interior and protect it from the elements.
Use tin snips to cut a length of j molding 2 inches longer than the width of the window.
When you build a rough opening for a new window make it big enough to accommodate the window and a false frame that will finish the rough opening.
Cut away the extra siding.
Use a siding removal tool.
Mark the center of the old sill so the new window will be centered.
Push one side of the siding toward the end of the table until the cutting mark is a little bit past the side of your table.
Use this tool by inserting it where a piece of vinyl overlaps a piece below it and then sliding it across until you reach the end of.
Remove the pieces of vinyl siding from around the window area.
Cut the tape to length with a utility knife and peel a little bit of the backing free and stick it to the top of the window.
Do not cut the vinyl off.
Remove the old sill using chisel and hammer.
Even with a j at the head i still like to use a drip.
Be sure to wear safety goggles as you re determining how to cut siding.
If you re siding right against the window.
Now is also the time to add or replace a vinyl sill if you would like a window sill feature.
But if you plan to surround the window with trim choose 9 in wide flashing to protect behind the seam between the trim and the siding.
If you re cutting dark vinyl siding use chalk or light colored tape to mark the line you want to cut.
Using a circular saw set to the right depth just a hair shallower than our siding to ensure we didn t break through the house wrap or wall and a brace to ensure a straight cut we cut away the extra siding from around our window frame.
Place a few vinyl siding strips on a level workbench.
