Repairing and reglazing home windows is a manageable DIY project that can enhance insulation and aesthetics. Here’s a step-by-step guide:
1. Assess the Window
Check for Damage: Look for cracked or broken glass, deteriorated glazing, or loose panes.
Determine the Frame Type: Wooden and metal frames require different tools and techniques.
2. Tools and Materials Needed
Putty knife
Glazier’s points
Glazing compound or putty
Heat gun or hair dryer
Paint scraper
Sandpaper (medium and fine grit)
Glass cleaner
Replacement glass (if needed)
Safety gloves and goggles
Paint or primer (if required)
3. Remove the Old Glazing
Protect Yourself: Wear gloves and goggles to prevent injury.
Soften Old Glazing: Use a heat gun or hair dryer to soften hardened glazing putty.
Remove Putty: Scrape away old putty with a putty knife or paint scraper.
Remove Glazier’s Points: Carefully pry out the metal points holding the glass in place.
Take Out the Glass: Lift out the damaged or old glass gently. If the glass is broken, remove pieces carefully.
4. Prepare the Frame
Clean the Frame: Scrape off remaining putty and debris.
Smooth the Surface: Sand the frame to create a smooth surface for new glazing.
Prime (if Wooden): Apply a wood primer to protect against moisture and ensure a good bond.
5. Measure and Cut Replacement Glass
Measure the Opening: Measure the width and height of the frame and subtract about 1/8 inch for expansion room.
Cut the Glass: Have a hardware store cut the glass to size, or use a glass cutter if you’re experienced.
6. Install the Glass
Apply Glazing Compound: Roll glazing compound into thin ropes and press them into the frame to form a bedding for the glass.
Position the Glass: Set the glass into the frame, pressing gently but firmly to secure it.
Insert Glazier’s Points: Push glazier’s points into the frame every 6 inches to hold the glass in place.
7. Apply New Glazing Compound
Prepare the Putty: Knead the glazing compound until pliable.
Shape and Apply: Roll the putty into ropes and press it around the glass edge.
Smooth the Surface: Use a putty knife to create a smooth, angled bead along the edges.
8. Let the Glazing Cure
Allow the glazing compound to cure according to the manufacturer’s instructions (typically 7-14 days).
9. Paint the Frame
Choose Weatherproof Paint: Use paint that’s suitable for exterior windows.
Cover the Glazing: Extend the paint slightly onto the glazing compound to seal the edges and prevent water intrusion.
10. Clean the Glass
Use a glass cleaner and a lint-free cloth to clean off any smudges or residue.
Tips for Success
Work in Good Weather: Choose a dry day with moderate temperatures for best results.
Use Quality Materials: Invest in high-quality glazing compound and glass for durability.
Take Time for Finishing: Proper smoothing and painting will enhance the window’s longevity and appearance.