Navy Painted Sill, Oceanfront Room
The same navy taken across a full window wall at seat depth. At this scale the sill becomes a datum line through the room, so the colour was chosen to sit down against the glazing rather than compete with the view.
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.
Living room sills
Living-room sills are often the longest runs in the house, spanning multi-panel windows, which makes the seam strategy and the front edge the two decisions that matter. 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.