Question: How to Seal Windows?

• Step 1: Clean Inside the Window Frame. Using a rag dampened with water and a little soap, wipe inside the window jamb and along the bottom of the lower sash and the top of the upper sash. Let dry.
• Step 2: Seal the Sides. Seal the Side of a Drafty Window. seal sides of a window.
• Step 3: Seal the Top and Bottom. Seal a Window.

How do you seal drafty windows?

1. Step 1: Clean Inside the Window Frame. Using a rag dampened with water and a little soap, wipe inside the window jamb and along the bottom of the lower sash and the top of the upper sash. Let dry.
2. Step 2: Seal the Sides. Seal the Side of a Drafty Window. seal sides of a window.
3. Step 3: Seal the Top and Bottom. Seal a Window.

What can you use to seal windows?

To prevent leaks, caulk the window where it meets the exterior siding. 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).