Double-paned windows are unique in that they are composed of two separate glass panels set in a single, shared frame. This assembly holds certain advantages over traditional window types. The panels of a double-paned window are less than an inch apart, trapping non-toxic gases that actually improve insulation. As a result, this feature is also effective in filtering street noise. An airtight, waterproof sealant such as silicone caulk will effectively reseal the window and insulate the interior of a structure.
Things You'll Need
- Caulk remover
- Utility knife
- Putty knife
- Damp cloth
- Silicone caulk
- Wire or nail
- Caulking gun
- Smoothing tool
Treat the existing window seal with a commercial caulk remover. Apply the solvent according to the instructions on the label and allow it to dissolve the sealant for the appropriate waiting period.
Cut the old seal with a utility knife and allow it to come loose. Pry the remainder from the window frame, using a putty knife until it is completely removed.
Wipe the seams of the double-paned window frame with a damp cloth to clean off any loose residue or dirt. The target areas must be free of contaminants that could trap air when the new sealant is applied.
Prepare a cartridge of silicone caulk. Cut the tip from the nozzle with scissors and puncture the seal inside, using a stiff wire or nail, then load the cartridge into a caulking gun.
Dispense a bead of the caulk no more than 1/4 inch thick directly into a seam between the window frame and the wall. Draw the tip of the gun along the length of the seam and apply an even seal.
Glide a smooth, flat tool over the caulk for a neater seal, such as a craft stick or plastic spoon. Repeat the same procedure for each side of the window frame and allow the silicone to cure for 24 hours.