Window Restoration




Total restoration of existing sashes, frames, AND single pane glass

Restoration is recommended when there is significant decay of the wood elements, the glass is loose, or more than one third of the putty is loose or missing. When all other hardware, weather stripping, or pulley and rope problems are presumed present to a degree, they are corrected as part of the sequence of sash restoration.



  1. Nearly all parts reused and all new parts same as existing in material, profile, and proportion

  2. Sash removed from building, catalog per opening

    • White corrugated plastic panels installed for light transmission and weather protection — every other window so as to not darken rooms completely

    • Plywood installed for security and weather protection

  3. Jambs restored with sash removed

    • Windows scraped of all loose paint

    • Abatron Epoxy consolidant used where fibers are weak

    • Real wood Dutchmen repairs where pieces are missing

    • Zinc interlocking weather-strip replaced with same for sound and lasting seal

    • Final sanding with Hepa filter vacuum attached

    • Period style zinc interlocking weather-strip retrofitted to operable sash for sound and lasting seal

    • Sash pulleys stripped of paint, wire brushed and lubed

    • Jambs primed before sash installation.

  4. Sashes restored in shop

    • Each sash is steamed to soften old putty and release historic glass form sash

    • Each sash pressure chemically stripped, removing all loose paint, glazing putty and glass Epoxy consolidants and abatron resin fill used as necessary to secure loose fibers. Wood Dutchman and replacement parts fabricated as necessary

    • Remaining paint is chemically stripped at a specialty stripping shop

    • Epoxy consolidants and Abatron resin fill used as necessary to secure loose fibers. Wood Dutchman and replacement parts fabricated as necessary

    • Glass cleaned of paint and dirt, replaced if damaged

    • Historic glass reused whenever possible. Replacement glass to be in kind

    • Glass is bedded on modern silicone acrylic sealant

    • New, traditional linseed oil based glazing putty at all mullions

    • Sashes prime painted on all surfaces prior to installation

  5. Sashes installed

    • All restored parts reused in installation

    • Sashes hung on new brass chain with new stop bead and parting bead to match existing

    • Top and bottom sash to operate with ease, latch with authority and seal well



Click on an image to enlarge. Hover over image to learn more.