DIY Guide: How to Seal Windows and Doors
Sealing your windows and doors is a simple yet effective way to improve your home’s energy efficiency and keep drafts, moisture, and pests out. By taking the time to seal any gaps, you can reduce energy costs and make your home more comfortable year-round. Here’s how to do it:
Step 1: Gather Your Supplies
Before you start, make sure you have:
- Weatherstripping: Choose the appropriate type for your windows and doors (e.g., adhesive foam, V-strip, felt).
- Caulk: Use exterior-grade caulk for outdoor applications and interior-grade caulk for inside work. Shop Now
- Caulking gun: Necessary for applying the caulk smoothly. Shop Now
- A putty knife: For removing old caulk or smoothing out the new application. Shop Now
- Scissors: To cut weatherstripping to the right length. Shop Now
- Cleaning supplies: Mild detergent, water, and a cloth to clean surfaces before applying caulk or weatherstripping. Shop Now
Step 2: Inspect for Gaps
Start by thoroughly inspecting your windows and doors:
- Check for drafts: On a windy day, run your hand around the edges of windows and doors to feel for drafts. Alternatively, hold a lit candle near the edges; if the flame flickers, there’s a draft.
- Look for visible gaps: Inspect the frames of windows and doors for visible cracks or gaps where air or moisture could get through.
Step 3: Remove Old Caulk or Weatherstripping
If there’s existing caulk or weatherstripping that’s worn out:
- Use a putty knife: Carefully scrape away old caulk or weatherstripping. Be gentle to avoid damaging the window or door frame.
- Clean the area: Once the old material is removed, clean the surface with mild detergent and water. Allow it to dry completely before applying new materials.
Step 4: Apply New Caulk
For sealing gaps around the window or door frames:
- Load the caulking gun: Cut the tip of the caulk tube at a 45-degree angle, then load it into the caulking gun.
- Apply the caulk: Hold the gun at a slight angle and apply a steady bead of caulk along the gaps. Smooth it out with a putty knife or your finger for a clean finish.
- Let it dry: Allow the caulk to cure as per the manufacturer’s instructions, usually 24 hours.
Step 5: Install Weatherstripping
For sealing around the edges of windows and doors:
- Measure and cut: Measure the length of the window or door frame, then cut the weatherstripping to size using scissors.
- Apply the weatherstripping: Peel off the adhesive backing and press the weatherstripping firmly into place along the edges of the frame.
- Check the fit: Close the window or door to ensure it seals tightly. Adjust if necessary to eliminate any remaining drafts.
Step 6: Test Your Work
Once everything is in place:
- Check for drafts again: Repeat the candle or hand test to ensure the seal is tight.
- Make adjustments as needed: If you still feel drafts, apply additional caulk or weatherstripping as necessary.
Step 7: Maintain Your Seals
Regularly check the seals around your windows and doors, especially before the winter and summer seasons. Replace any worn or damaged materials promptly to maintain energy efficiency.
Sealing your windows and doors is a quick and cost-effective way to improve your home’s comfort and efficiency. With these steps, you can easily tackle this project yourself and enjoy the benefits of a well-sealed home.