Follow our handy guide to replacing an old window frame for safety and aesthetic reasons.
Use the old pane as a guide to buy a new pane of glass from a supplier, or measure the opening between the rebates, then deduct 3mm from either side to allow for clearance and simple installation.
Use a putty knife and a hammer to scrape out the old putty, then pull out the glazier’s points or nails with pliers.
Carefully remove the pane of glass.
TIP: Remove the sash to work on a flat surface without obstruction.