Older windows that need restoring require a special touch, extensive knowledge and specialized equipment and techniques. This article discusses Historical Window Restoration tips, techniques, materials and tools used.

For historical buildings that are under local or state designation, the best option for fixing windows in need of repair is to utilize historical window restoration. This can start with a general window inspection to determine the extent of the damage and estimate what type of restoration will be necessary.

For homes built before 1950, total replacement is often the best option, but homes within a historic district will need to comply with guidelines outlines in the local historic preservation ordinance. Get a copy through local agencies to determine whether or not you will be required to maintain the original character of the window. If this is the case, new windows can be custom made to match previous designs.

If glazing from the glass panes is cracked or missing, this needs to be repaired as it will be resulting in substantial energy loss. A putty knife and a small steamer can be implemented for this task.

Use the steamer a few inches from the class to soften glazing in areas where it needs to be removed. Keep in mind that getting too close to the glass with the heat source could potentially crack the panes, so try to use it a few inches away, moving it from side to side to prevent one area from becoming too hot. Remove the glazing with the putty knife and then apply new glazing, being careful to angle the knife at 35 degrees so that rain will be encouraged to drip down off the pane and not onto the rails.

The wood framing around windows will also need a thorough inspection. These should be maintained carefully every few years, but historic windows may need a little more care to be repaired, as they will be quite old. Clean the wood, allow it to dry thoroughly, removing any rotting spots, and then use a wood composite as a filler to smooth over the cracks and rotted areas. After drying, this can be easily sanded and painted to appear good as new.