Repairing Glazing Old Windows

Soften old hardened putty glazing compound with a heat gun set to medium and fitted with a nozzle shield.

Repairing glazing old windows.

Paint the exposed wood with either a primer or use an epoxy consolidant. 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. Average time to do the above work is one hour per six pane window. Sand and scrape to reach the original wood.

It is important that in painting the glazing the paint flows onto a small part of the glass to make a weather tight seal. This exposes the metal glazier s points. Pull out the old glazing points with pliers. Scrape the putty away with a putty knife.

If the old glass is in good shape leave it in place. Repair a wood window in 12 steps. Remove the glass and label it so you know which opening to put it back into. If the bottom edge of the lower sash s.

When glazing a window one of the first things you ll need to do is remove any old glazing that s chipped or damaged. Sand primed surfaces if needed. Once the old glazing is removed as well as the glass scrape the mullions with the triangular scraper to remove any glazing or old paint. A primer is not needed.

If you are glazing your windows in a garage or shop use sarco type m putty. Sarco glazing putty this is the only brand of glazing putty i recommend. The sharp tip of a paint scraper can be used to carefully remove the points without damaging the glass. 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.

With the glass thoroughly broken up pull the shards out of the frame by hand. Sand wood surfaces if needed. If you used the epoxy consolidant to coat your window sand it to remove the gloss and then paint with a good acrylic. It is linseed oil based and as close to the old stuff they used to use.

The points are covered by glazing compound. This step may not be needed if all wood surfaces are perfectly sound. The glass should be cleaned so that all of the putty oils are removed. Put on heavy gloves and eye protection place a cloth over the broken pane and tap it with a hammer.