Natural Stone Sills and Cut-to-Size Stone
Stone sills sit beneath windows and doors, providing a finished, weather-shedding ledge where an opening meets the wall face. NSSO offers 4x6 full bed sills at $38.13/lf and 4x3 veneer sills at $34.06/lf. Full bed sills suit new construction and freestanding openings; veneer sills are sized to match veneer wall applications. Sills are typically ordered to the exact opening width, so accurate measurements before ordering matter more here than with most other stone products.
Full Bed vs Veneer Sills
Full bed 4x6 sills are the deeper, structural option, appropriate where the sill needs to span the full wall thickness. 4x3 veneer sills are shallower and built to pair with a veneer wall system rather than a full-depth stone wall.
Measuring for a Custom Sill Order
Sills are cut to length, so confirm the exact opening width plus any required overhang before ordering. Getting this measurement wrong means a wasted cut piece, not a simple exchange.
Frequently Asked Questions
Do sills need to be a specific stone type to match my building stone?
Matching color and quarry source between sills and wall stone is recommended for a consistent look, though it isn't structurally required.
How much overhang should a sill have past the wall face?
Overhang is a design decision that depends on the wall system and drip-edge detailing. Confirm with your installer or designer before finalizing the cut length.
Can sills be ordered in non-standard depths?
Custom depths can be requested. Lead time may be longer than for standard 4x6 or 4x3 sills.
Are sills sold by the piece or by length?
Sills are priced per linear foot, so cost scales directly with the length of the opening being finished.