Wood window repair in Bethesda, MD is really a decision between two kinds of wood. The sash already in the house was made from old-growth stock, dense and slow-grown, which is why it has lasted as long as it has. A replacement window, however good, is built from faster-grown stock and a different profile, and it changes how the house reads from outside. Argo repairs rather than replaces wherever the original frame is sound: the rotted section of rail or sill is cut away, a new piece is fitted to the same profile, and the rest of the old wood stays in service. The result keeps the sightlines, the muntin pattern, and the depth of the original sash.