Saving Your Historic Wood Windows: A Restoration Guide

The Case for Restoring Historic Wood Windows

The movement to replace historic wood windows with modern vinyl or aluminum units has been one of the most damaging trends in historic home ownership. Original wood windows represent irreplaceable craftsmanship and can be restored to excellent condition at a fraction of the environmental cost of new windows.

Benefits of Restoration Over Replacement

**Cost**: Restoration often costs 30-50% less than quality replacement

**Durability**: Old-growth wood is denser and more durable than modern timber

**Performance**: Restored windows with proper weatherstripping can match modern windows

**Character**: Original windows preserve the authentic appearance of your home

**Historic value**: Replacement windows can disqualify you for historic tax credits

Understanding Sash Window Anatomy

**Stiles**: Vertical members of the sash

**Rails**: Horizontal members (top, bottom, and meeting rails)

**Muntins**: The small wood members that divide the glass lights

**Sash cord**: Rope or chain that connects the sash to the counterweights

**Pulley**: The wheel over which the sash cord runs

The Restoration Process

Careful removal: Sashes are removed without damaging the surrounding trim

Assessment: Each sash is inspected for rot, broken joints, and paint condition

Repair: Epoxy consolidants and fillers repair minor rot and damage

Reglazing: Old glazing compound is removed and replaced with oil-based putty

Weatherstripping: Modern pile weatherstripping is installed

Finishing: Sashes are primed and painted with appropriate exterior paint

Lead Paint Considerations

Windows on pre-1978 homes almost certainly have lead paint. Qualified window restorers will use EPA-certified lead-safe work practices, including containment, HEPA vacuuming, and proper disposal.

Finding a Window Restoration Contractor

Look for contractors who:

Have a dedicated shop for off-site work

Are EPA RRP certified

Can show you examples of completed restoration work

Offer written warranties on their work