Repairing Glazing Old Windows

The points are covered by glazing compound.

Repairing glazing old windows.

Soften old hardened putty glazing compound with a heat gun set to medium and fitted with a nozzle shield. When glazing a window one of the first things you ll need to do is remove any old glazing that s chipped or damaged. Strip the old glazing and paint as required to remove the old glazing points small pieces of metal placed every six inches or so in the frame to hold the glass firmly to the sash. If the glazing is still in place and looks good for part of the window it can stay but it s best to completely remove any glazing that looks chipped or loose because it can prevent the new glazing from adhering as it should.

This exposes the metal glazier s points. If you are glazing your windows in a garage or shop use sarco type m putty. If the bottom edge of the lower sash s. The glass should be cleaned so that all of the putty oils are removed.

A primer is not needed. It is linseed oil based and as close to the old stuff they used to use. With the glass thoroughly broken up pull the shards out of the frame by hand. If your windows will be glazed outside and exposed to the elements prior to painting use sarco dual glaze.

The sharp tip of a paint scraper can be used to carefully remove the points without damaging the glass. Paint the exposed wood with either a primer or use an epoxy consolidant. Sand wood surfaces if needed. Scrape the putty away with a putty knife.

If the old glass is in good shape leave it in place. Pry them out of the wood. Pull out the old glazing points with pliers. It is important that in painting the glazing the paint flows onto a small part of the glass to make a weather tight seal.

Sand and scrape to reach the original wood. Sand primed surfaces if needed. Sarco glazing putty this is the only brand of glazing putty i recommend. The epoxy will soak into the wood and make it harder than original as well as waterproof.

Remove the glass and label it so you know which opening to put it back into. Average time to do the above work is one hour per six pane window. Repair a wood window in 12 steps. Put on heavy gloves and eye protection place a cloth over the broken pane and tap it with a hammer.