Over time, wear and tear to your windows can cause them to lose their seal and become drafty. Luckily, sealing your windows is an easy task and only requires a few materials and some patience. There are several ways to seal a window and here, our experts share the most popular:
What you’ll need to seal a window:
- Putty knife
- Warm water, rag
- Window or rope caulk
- Craft stick
- Rubber gloves
- Pry bar
- Foam sealant
- Utility knife
- Flathead screwdriver
Around the Window
- First, determine where your draft is coming from.
- If it’s coming from between the glass and the stiles/rails:
- Remove the window.
- Use a putty knife to remove the old caulk.
- Wipe down the area with warm water and a rag to make sure all of the old caulk is gone.
- Once the area is dry, squeeze a bead of window caulk along the seams.
- Next, use a craft stick to smooth down the caulk and let it dry.
- If it’s coming from between the window and the frame:
- First, open the window and clean the area with warm water and a rag.
- Once the area is dry, measure the appropriate length of rope caulk.
- Next, put on your rubber gloves.
- Dip the rope caulk into warm water for a few seconds to soften it.
- Press the caulk into the gaps and let it dry.
- If it’s coming from between the frame and the wall:
- Locate where the window meets your home’s exterior wall.
- Wipe down the area with warm water and a rag.
- Once it’s dry, squeeze a bead of caulk along the line where the frame and wall meet.
- Let it dry completely.
Inside the Trim
By removing your window trim, you can do a much better job of sealing your window.
- First, choose whether you want to remove your interior or exterior window trim.
- Next, use your hammer and pry bar to remove the trim.
- Spray your foam sealant into the void. (Don’t worry if it overflows.)
- Let the foam dry completely. This will take several hours.
- After that, use a utility knife to cut off the excess sealant.
- Use your hammer and nails to replace the trim in the reverse order you removed it.
If your window’s weatherstripping is old or damaged, it could be leading to drafts.
- First, remove your window.
- Next, locate the old weatherstripping.
- It will likely be a foam type that has lost its grip and is pulling away from the window frame or a rubber/vinyl type that is cracking or has lost its shape.
- Remove the weatherstripping by peeling it away from the frame. If it’s difficult to remove, try prying it up with a flathead screwdriver and a hammer.
- Once the weatherstripping is gone, wipe the area down with warm water, soap, and a rag to remove the residue.
- Replace the weatherstripping with the same kind that you removed.
- Either peel-and-stick foam weatherstripping along the frame or glue the weatherstripping down.