Project Guide

How to Repair Windows

1
REMOVE THE WINDOW
Remove the window
  • Use painter's tape or duct tape to tape an "X" shape in the middle of the glass to be removed. Make sure to cover any areas that are already shattered or cracked. The more surface you can cover with the tape, the better. This step will help prevent injury and reduce later clean up if the glass breaks during the removal process, as the tape collects the glass pieces and holds them together.
  • Remove spring-loaded double-hung windows by pushing against the flexible vinyl channels to release the channel pins. 
  • Older double-hung windows can be repaired while the window remains in the frame.


Safety: Wear appropriate safety gear, including gloves and eye protection, when handling glass.

2
SCRAPE AWAY OLD PUTTY
Scrape away old putty
  • With traditional glazing, soften the old putty with a heat gun or torch, being careful not to scorch the wood. 
  • Scrape away the softened putty with a putty knife. 
  • On newer windows, simply pry out the vinyl glazing strips.


Safety: Wear appropriate safety gear, including gloves and eye protection, when handling a heat gun. Remember that some window frames - depending on the material - may conduct heat.

3
REMOVE OLD GLASS AND SAND GROOVES
Remove glass sand grooves
  • Remove the broken glass and metal glazing points from the frame, then sand the L-shaped grooves to clean away the old paint and putty. 
  • Coat the bare wood with a sealer and let dry.
4
BED NEW GLASS WITH GLAZING COMPOUND AND POINTS
Bed with glazing compound points

Tip: Do not put any downward pressure on the glazing points when inserting or they could break the glass.


  • Apply a thin layer of glazing compound in the primed grooves. 
  • Press the glass lightly to bed it. 
  • Press in new glazing points every 10 inches with the tip of a putty knife.


5
APPLY ADDITIONAL GLAZING COMPOUND
Apply additional glazing compound
  • Move the tube tip along the edge of the glass while steadily squeezing the trigger. 
  • Smooth the glazing with a wet finger or cloth. 6
6
PAINT THE WINDOW FRAME
Paint the window frame
  • Latex glazing can usually be painted the same day.  
  • Overlap the paint onto the glass by 1/16 inch to improve its weather seal.