Repairing Glazing Old Windows

Pry them out of the wood.

Repairing glazing old windows.

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. With the glass thoroughly broken up pull the shards out of the frame by hand. Soften old hardened putty glazing compound with a heat gun set to medium and fitted with a nozzle shield. Sand wood surfaces if needed.

The points are covered by glazing compound. This exposes the metal glazier s points. Put on heavy gloves and eye protection place a cloth over the broken pane and tap it with a hammer. When glazing a window one of the first things you ll need to do is remove any old glazing that s chipped or damaged.

It is linseed oil based and as close to the old stuff they used to use. 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. It is important that in painting the glazing the paint flows onto a small part of the glass to make a weather tight seal.

Average time to do the above work is one hour per six pane window. If you are glazing your windows in a garage or shop use sarco type m putty. A primer is not needed. The epoxy will soak into the wood and make it harder than original as well as waterproof.

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. Scrape the putty away with a putty knife. Sand primed surfaces if needed. If the old glass is in good shape leave it in place.

The sharp tip of a paint scraper can be used to carefully remove the points without damaging the glass. If your windows will be glazed outside and exposed to the elements prior to painting use sarco dual glaze. If you used the epoxy consolidant to coat your window sand it to remove the gloss and then paint with a good acrylic. Pull out the old glazing points with pliers.

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. Repair a wood window in 12 steps. If the bottom edge of the lower sash s. Sand and scrape to reach the original wood.