Double pane windows are an essential feature in modern Calgary homes, providing insulation and energy efficiency. However, if one of the panes cracks or breaks, you don’t necessarily need to replace the entire window. With the right tools and approach, you can replace just the glass and restore functionality and appearance. Here’s a step-by-step guide on how to replace the glass in a double pane frame.
1. Assess the Damage
Before starting with your window installation in Calgary, it’s important to assess the extent of the damage. If the glass is cracked, it’s best to handle it carefully as broken glass can be dangerous. If you notice condensation between the panes, it means the seal has failed, and the insulating gas may have escaped. In both cases, the glass unit needs to be replaced.
2. Gather Your Tools and Materials
To replace the glass in a double pane window, you’ll need the following tools and materials:
- Utility knife
- Putty knife or scraper
- Tape measure
- Gloves and safety glasses
- Glass suction cups (optional, but useful for larger panes)
- Replacement double pane glass unit
- Glazing tape or sealant
- Caulk gun and caulk (if needed)
- Screwdriver or drill (if frame has screws holding it in place)
Make sure you order a replacement glass unit that’s exactly the same size as the existing one. Measure the dimensions of the frame and the thickness of the glass to get an accurate replacement.
3. Remove the Window Sash
Double pane windows often have a sash that holds the glass. The first step is to remove the sash from the frame. This process may vary depending on your type, but in many cases, you’ll need to unlock it, lift it up, and tilt it inward to remove it from the track. In some cases, you may need to unscrew part of the frame to remove the sash.
4. Remove the Broken Glass
Once the sash is out, place it on a flat surface, preferably on a soft blanket or towel to avoid scratches. Carefully use a utility knife or putty knife to remove the glazing or rubber gasket that holds the glass in place. If there are any screws holding the glass, remove them.
Use caution when handling broken glass. It’s a good idea to wear gloves and safety glasses during this step. If the glass is in large pieces, you can use glass suction cups to lift it out safely.
5. Clean the Window Frame
Before installing the new glass, clean the frame thoroughly. Remove any old sealant, glazing tape, or dirt to ensure a tight seal when you place the new glass. The cleaner the frame, the better the new glass will fit, and the more secure the seal will be.
6. Install the New Double Pane Glass
Now it’s time to install the new glass. If you’re using glazing tape, apply it evenly around the edge of the frame. If your window uses a gasket, place the gasket around the new glass.
Carefully position the new glass into the frame, ensuring it fits snugly. If the glass unit is large, use suction cups to help maneuver it into place without putting too much pressure on the glass. Once the glass is seated properly, reinsert any screws you removed earlier.
7. Seal the Window
After the glass is securely in place, it’s time to seal it. Apply a bead of caulk around the edges of the glass where it meets the frame. This will help prevent moisture from entering and will provide a better seal for insulation. Smooth the caulk with a putty knife for a clean finish.
8. Reinstall the Sash
Once the new glass is securely installed, reinstall the sash into the frame. Depending on your design, this may involve reversing the process you used to remove it. Make sure the sash fits securely and operates smoothly.
9. Test the Window
After reinstalling the sash, test the frame to ensure it opens and closes properly. Check the seal around the edges to make sure no air or moisture can get through. If everything looks good, your window is now fully repaired and ready to provide energy-efficient insulation once again.
Consider Professional Window Installation in Calgary
Replacing the glass in a double pane window is a task that can save you money and extend the life of your frames. However, it requires precision and care. If you’re unsure about handling glass or removing components, it’s always a good idea to consult a Calgary professional to avoid any potential risks.
