Stripping film if your leaking problem is from loose fitting window sashes or a poor fitting door the simplest and cheapest method would be to purchase some self adhesive foam weather.
How to seal up windows and doors.
To prevent leaks caulk the window where it meets the exterior siding.
But if done incorrectly it can lend a sloppy amateurish look.
Apply the caulk by moving the gun along the seam in a smooth motion while squeezing the tube with even pressure.
Cut the 2 inch x 4 inch board to length and use 2 inch long deck screws in 4 inch intervals to attach the board to the plywood along the seam of the two pieces.
Apply new caulk one tube should be enough to seal a whole window.
Caulking windows to give them a finished look inside and out and seal out leaks and drafts is a fairly common diy task.
To begin cut the tip off of the tube of caulk at a 45 degree angle so that the tip will fit nicely into the window seam.
Properly sealing windows and doors not only prevents unwanted drafts but also protects against.
Also seal the crack between the interior trim and the wall with caulk as this is where air leaking around the window frame will most likely enter the house.
You can even temporarily seal the entire window with removable caulk if you don t intend to operate the window in the winter.
Take special care to seal the top side of the top piece of trim.
Next apply a fresh bead of caulk around the outside perimeter of the window creating a continuous wind blocking seal between the window frame and siding or between the window frame and exterior.
Each fall buy a tube or two of exterior caulking and make your rounds on outside of your home.
Learn how to seal air leaks in order to weatherize your home.
If the window is surrounded by wood trim use a high grade polyurethane caulk to seal all gaps between the trim and the siding and the trim and the window.