Replace a broken window pane
Accidents happen, and replacing a broken window can be easily accomplished by a homeowner with a few tools and materials. Here's how to replace a broken window:
You will need:
Replacement glass - you can have this cut to size at your local Builders Warehouse
Thick gloves and safety glasses
Towel or rag
Putty or palette
Exterior and interior paint
1. If replacing glass in a high-up window, such as a second level, remove the window sash and set it on a flat work surface.
2. Remove all loose glass shards and any pieces embedded in the existing putty with long nose pliers. If the glass is broken but not loose, gently strike the glass with a hammer to cause it to crack and lift the glass out of place.
3. Use a putty or palette knife to break the putty loose and remove it to ensure that the frame is completely clean and then sand with 120-grit sandpaper.
4. Apply a coat of exterior primer and paint on metal frames to prevent rust - Apply wood sealer on timber frames to protect from the elements.. Allow paint or sealer to dry as recommended by the manufacturer.
5. Measure the height and width of the opening to have the glass cut to size. Rather than be too big and not fit, deduct 2mm from the width and height for a snug fit.
6. Knead the putty with your hands to warm and make more pliable and then roll it into a long, thin sausage. Press the putty into the frame where the new glass pane will fit.
7. Place the new glass pane in its place, ensuring that putty has filled all the gaps between the wood/metal and glass. Remove any excess putty that was squeezed out from the opposing side of the window.
8. Repeat step 6 and place the putty around all the exterior edges of the glass. Press the putty firmly into place.
9. Use a putty knife to smooth the putty, removing any excess. Leave to dry for a day or two.
10. The putty needs to be primed and painted with exterior paint to prevent it from drying out.