Navy Painted Sill in a Bath
Deep navy sprayed to a matte film, carried the full width of the window and squared at the front. Matte hides prep and touch-ups better than any other sheen, which suits a long uninterrupted run like this one.
About this painted sill
Painted sills are sprayed in 2K polyurethane over a paint-grade substrate, which is the most moisture- and chemical-resistant finish system offered. Any of 373 Sherwin-Williams colours can be specified, in matte, satin or semi-gloss. Matte hides prep and touch-ups best, semi-gloss is the most washable, and satin sits between the two — the usual choice where a sill has to match existing trim exactly.
Bathroom sills
Bathroom sills live in the wettest room in the house, with condensation collecting on the glass above them. Material choice matters more here than anywhere else. Whatever the room, the sill is cut to your opening rather than trimmed to fit on site — length, depth, horn projection and corner treatment are all set before it is machined.
Specifying one like it
Measure jamb to jamb, then the depth from the window frame to where you want the front edge to land, and the horn length past each side if the sill returns into the wall. The configurator draws the piece live as you enter dimensions and produces a dimensioned spec sheet you can hand to an installer. See the measuring guide for the full method, or compare wood against solid surface before choosing.
This image is a rendering, shown to illustrate materials and proportions available through the configurator.