Nah it s not necessary.
Caulk vinyl siding around windows.
If a siding cutout extends 1 inch or more beyond the outer edge of the retrofit window fin install flashing around the rough opening and seal around its outer perimeter for example by embedding it in a bead of caulk.
It is important that you remove as much of the old caulk as you can without causing damage to the vinyl siding.
Because the caulk is hard and set in you ll need to soften it for removal.
Removing old caulk from vinyl siding takes more time and care.
A putty knife or scraper a new tube of caulk a caulk gun and a flat craft stick.
And i m curious do i caulk between the j channel and the window frame on the outside.
How to caulk a window.
It s also recommended to use a cloth or rag ready to wipe up and smooth excess caulking before it sets on the siding.
How to caulk the window trim on lap siding.
Correct methods and techniques.
But if done incorrectly it can lend a sloppy amateurish look.
If you drip caulk on vinyl siding wipe it with a damp sponge before the caulk has time to harden.
Whether you are repainting replacing a window or replacing the siding on your house the caulking around the window trim is a very important element.
Caulking siding trim windows doors etc.
Paintable silicone caulk can be used around the outside of window units to properly seal the window and the siding edge or around the entire door unit.
Remove old caulk from around the window s using a putty knife.
Fresh wet caulk is easier to remove than dry caulk.
Caulking windows to give them a finished look inside and out and seal out leaks and drafts is a fairly common diy task.
No you don t have to.
I just had my 120 year old house sided with new vinyl siding.
Minneapolis house painters recommends paying attention to corners and crevices as well as trim boards around windows and doors.
Use around the perimeter of windows to help seal the window to the header sill jack stud and jamb.
Caulk all cracks between the window trim and the siding by following the same procedure.