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729 Fairmont Street, NW, Washington, D.C. • Phone: (202)332-3700 • Fax: (202)332-3325 • Contact us
Window Scopes
Window Reproduction

Reproduction of traditional double hung wood sash for
Insulating Glass



· Complete analysis of profiles, proportions and function of all elements including sash, glazing, hardware, weather stripping, sills and casing.
o Information gathered from remaining material at project site as well as neighboring buildings and like architecture elsewhere in the city.

· Sample unit fabricated and or scale drawings completed to model finished product.

· Only solid Sapple Mahogany or Spanish Cedar  used during fabrication.  No contemporary farm growth pine to be used.  Exposed end grain and other more vulnerable areas sealed with penetrating epoxy.

· Sash fabricated with traditional mortise and tenon joinery.  Meeting rail condition is all wood with interlocking metal weather-strip, no flexible rubber, plastic or vinyl parts.

· Weather-stripping to be Accurate brand traditional zinc interlocking style for durability and authenticity.

· Sash suspended on solid brass chain and counter balanced with measured weights.  Pulleys to be cast iron reclaimed and restored units or solid brass traditionally styled modern units.

· Existing jambs and sills restored with epoxy consolidates and real wood Dutchman, as necessary, primed and painted.

· Glass shall be two clear annealed 1/8” panels with ¼” air space. Perimeter double sealed with two part polysulfide sealant. Outside panel to be historic like glass from Germany.

· Sash locks and lifts will be chosen per project.  We stock solid brass and oil rubbed bronze in a number of styles.  Reclaimed or existing hardware can be restored as desired.

· Windows will operate with ease, latch with authority and seal well.  Final painting by others with units in place.