The elegant interior at Sulgrave Club, said to be the last of the Dupont Circle mansions in original condition.

Often our work involves complete envelope restoration. Here we worked with masons and roofers during the window restoration.

Ten more years and these oval sash would not be restorable. Delicate work to revive.

Our sash steamers provide the most gentle means possible to remove paint from delicate historic fabric.

This decay will be epoxy repaired.

This is a weak area in the grain structure. Similar problems are occurring in jambs.

One of the few common mistakes in traditional building fenestration. This decay occurs because despite the curved linear nature of the window, there is no slope at the sill. All this decay starts at the very center bottom of the window frame. This problem was wide-spread at the Eastern Market as well.

Those angled breaks are not miters. The brick mold has swelled from the bottom to push forward the material where weakest on the side.

Full safety gear and nice scaffolding make for efficient work.

Note sash profile here. Very unusual and very complicated. A unique part of challenge of this project. There are both Ovolo and Ogee profiles, and none large enough to take paint well. Some have been eroded due to condensation.

Sash during steaming process. A last scrape to muntin exterior. Most paint was removed with heat and steam. Paint at interior muntin profile was removed with chemical.

Reproduction muniting in original sash.

Here five mock-up sash are receiving mahogany profiles bonded to the meeting rails in order that the interlocking weather stripping fits precisely. White spots are Abatron epoxies. Note application of liquid penetrating epoxy first (the dark area around the white paste).

A lovely restored traditional double hung wood window- mockup.

Before sealant application.

Immaculate sealant application at the Sulgrave Club . The extensive scaffolding at this project was an asset .