Custom Window Sills Cut to Size
CustomWindowSills.com offers made-to-measure interior window sills in solid hardwood and solid surface — made to your exact dimensions and shipped nationwide across the United States. Design your replacement window sill online and get an instant quote.
Window Sill Materials
Choose solid hardwood (walnut, white oak, maple, cherry), Corian solid surface, or a painted finish in any Sherwin-Williams color. Hardwood stains come from the Spectrum Finishing library; solid-surface colors include Glacier White, Designer White, Sandstone and Deep Espresso; painted sills are sprayed in 2K polyurethane in matte, satin or semi-gloss. Every sill is made to order in the edge profile and finish you choose. See all 545 colors and materials.
Window Sill Shapes & Sizes
Order a straight window sill, or a return sill with horns that wrap back to the wall on each side, for single, double and triple-window openings. The configurator accepts lengths from 8 to 160 inches and custom depths to 1/2-inch precision.
Window Sill Edge Profiles
Select an eased, bevel, bullnose, cove, ogee or Roman ogee edge profile, applied to the top arris, bottom arris or both. Visual front thickness ranges from 1-1/2-inch solid stock up to a 4-inch laminated build-up edge.
Inside-Corner Radius Options
Match your sill's inside corners to your wall jamb — leave them square, or route a 3/4-inch radius to match a bullnose drywall corner, set independently per corner.
Fabrication & Shipping
Every sill is made to your exact dimensions, accurate to ±0.5mm, and shipped nationwide. The interactive configurator requires JavaScript — please enable it to design your sill and request a quote.
All 545 Window Sill Finishes
Custom window sills are available in 95 hardwood stains across 11 species — Brown Maple, Cherry, White Oak, Walnut, Wormy Maple, Hard Maple, Hickory, Oak, Sap Cherry, Elm, Quarter Oak — plus 77 solid surface colours and 373 Sherwin-Williams paints.
Hardwood stains
Walnut — PCL Harvest, White Oak — PCL Wicker, Brown Maple — PCL Acres, Cherry — PCL Acres, Hard Maple — PCL Acres, Hickory — PCL Acres, Oak — PCL Acres, White Oak — PCL Acres, Wormy Maple — PCL Acres, Sap Cherry — PCL Acres, Brown Maple — PCL Almond, Cherry — PCL Almond, Elm — PCL Almond, Hard Maple — PCL Almond, Hickory — PCL Almond, Oak — PCL Almond, White Oak — PCL Almond, Wormy Maple — PCL Almond, Sap Cherry — PCL Almond, Walnut — PCL Almond, Brown Maple — PCL Amaretto, Cherry — PCL Amaretto, Hard Maple — PCL Amaretto, Hickory — PCL Amaretto, Oak — PCL Amaretto, White Oak — PCL Amaretto, Quarter Oak — PCL Amaretto, Wormy Maple — PCL Amaretto, Sap Cherry — PCL Amaretto, Walnut — PCL Amaretto, Wormy Maple — PCL Amaretto Gloss, Cherry — PCL Limed, Cherry — PCL Bamboo, Cherry — PCL Natural Effect, Cherry — PCL Granola, Cherry — PCL Crystal Shore, Cherry — PCL Seashell, Cherry — PCL Wicker, Cherry — PCL Sand, Cherry — PCL Bel Air, Cherry — PCL Driftwood, Cherry — PCL Flint, Cherry — PCL Natural, Cherry — PCL Honey, Cherry — PCL Classic Country, Cherry — PCL Harvest, Cherry — PCL Chestnut, Cherry — PCL Cappuccino, Cherry — PCL Sandstone, Cherry — PCL American Antique, Cherry — PCL Carbon, Cherry — PCL Smoke, Cherry — PCL Antique Slate, Cherry — PCL Medium Walnut, Cherry — PCL Lemon, Brown Maple — PCL Lemon, Brown Maple — PCL India Ink, Brown Maple — PCL Indigo, Brown Maple — PCL Limed, Brown Maple — PCL Bamboo, Brown Maple — PCL Natural, Brown Maple — PCL Granola, Brown Maple — PCL Crystal Shore, Brown Maple — PCL Seashell, Brown Maple — PCL Wicker, Brown Maple — PCL Sand, Brown Maple — PCL Bel Air, Brown Maple — PCL Driftwood, Brown Maple — PCL Flint, Brown Maple — PCL Natural, Brown Maple — PCL Honey, Brown Maple — PCL Classic Country, Brown Maple — PCL Harvest, Brown Maple — PCL Chestnut, Brown Maple — PCL Cappuccino, Brown Maple — PCL Sandstone, Brown Maple — PCL American Antique, Brown Maple — PCL Carbon, Brown Maple — PCL Smoke, Brown Maple — PCL Antique Slate, Brown Maple — PCL Medium Walnut, Walnut — PCL Seashell, Walnut — PCL Bel Air, Walnut — PCL Natural, Walnut — PCL Carbon, White Oak — PCL Bamboo, White Oak — PCL Natural, White Oak — PCL Granola, White Oak — PCL Crystal Shore, White Oak — PCL Seashell, White Oak — PCL Bel Air, White Oak — PCL Natural, White Oak — PCL Harvest, White Oak — PCL American Antique, White Oak — PCL Carbon
Solid surface colours
Lava Drift, Crème Royale, Rain Streak, Pebble Lane, Stonique, Excavage, Laguna Terrazzo, Peppered Terrazzo, Stonecrest Smoke, Calacatta Greige, Artista Sage, Artista Mist, Provence Nuwood, Bleached Nuwood, Cirrus White, Glacier White, Designer White, Cameo White, Everest, White Jasmine, Arrowroot, Venaro White, Arctic Ice, Dune Prima, Sand Storm, Natural Gray, Artista Beige, Artista Canvas, Artista Dust, Artista Gray, Carrara Crema, Carrara Lino, Elegant Gray, Vanilla, Matterhorn, Bisque, Bone, Sandstone, Sagebrush, Sandalwood, Silver Birch, Abalone, Linen, Clam Shell, Savannah, Sahara, Hot, Aurora, Witch Hazel, Hazelnut, Silverite, Juniper, Pearl Gray, Rain Cloud, Silver Gray, Dove, Silt, Rosemary, Canyon, Sorrel, Platinum, Sparkling Granita, Silver Linear, Sepia Linear, Neutral Aggregate, Ash Aggregate, Weathered Aggregate, Carbon Aggregate, Verdant, Laguna, Lava Rock, Deep Cloud, Deep Mink, Deep Sable, Deep Espresso, Deep Storm, Domino Terrazzo
Sherwin-Williams paints
Alabaster SW 7008, Pure White SW 7005, Extra White SW 7006, Snowbound SW 7004, High Reflective White SW 7757, Greek Villa SW 7551, Westhighland White SW 7566, Egret White SW 7570, Creamy SW 7012, Natural Choice SW 7011, White Duck SW 7010, Pearly White SW 7009, Ivory Lace SW 7013, Eider White SW 7014, Shoji White SW 7042, Ceiling Bright White SW 7007, Marshmallow SW 7001, Downy SW 7002, Toque White SW 7003, Ibis White SW 7000, White Flour SW 7102, Cotton White SW 7104, Arcade White SW 7100, Dover White SW 6385, Antique White SW 6119, Navajo White SW 6126, Roman Column SW 7562, Restful White SW 7563, Polar Bear SW 7564, Shell White SW 8917, Neutral Ground SW 7568, Summer White SW 7557, Creme SW 7556, Ivoire SW 6127, Whitetail SW 7103, Drift of Mist SW 9166, Gossamer Veil SW 9165, Agreeable Gray SW 7029, Accessible Beige SW 7036, Anew Gray SW 7030, Mega Greige SW 7031, Worldly Gray SW 7043, Amazing Gray SW 7044, Intellectual Gray SW 7045, Balanced Beige SW 7037, Tony Taupe SW 7038, Virtual Taupe SW 7039, Perfect Greige SW 6073, Popular Gray SW 6071, Versatile Gray SW 6072, Useful Gray SW 7050, Analytical Gray SW 7051, Gray Area SW 7052, Cool Beige SW 9086, Touch of Sand SW 9085, Wool Skein SW 6148, Relaxed Khaki SW 6149, Universal Khaki SW 6150, Taupe Tone SW 7633, Modern Gray SW 7632, Colonnade Gray SW 7641, Natural Linen SW 9109, Kilim Beige SW 6106, Nomadic Desert SW 6107, Latte SW 6108, Practical Beige SW 6100, Sand Dollar SW 6099, Muslin SW 6133, Believable Buff SW 6120, Whole Wheat SW 6121, Softer Tan SW 6141, Macadamia SW 6142, Bungalow Beige SW 7511, Pavilion Beige SW 7512, Canvas Tan SW 7531, Utaupeia SW 9088, Repose Gray SW 7015, Mindful Gray SW 7016, Dorian Gray SW 7017, Dovetail SW 7018, Gauntlet Gray SW 7019, Passive SW 7064, Argos SW 7065, Gray Matters SW 7066, Cityscape SW 7067, Grizzle Gray SW 7068, Gray Clouds SW 7658, Earl Grey SW 7660, Peppercorn SW 7674, Silver Strand SW 7057, Magnetic Gray SW 7058, Unusual Gray SW 7059, Gray Screen SW 7071, Online SW 7072, Network Gray SW 7073, Software SW 7074, Web Gray SW 7075, Cyberspace SW 7076, Silverplate SW 7649, Ellie Gray SW 7650, Silverpointe SW 7653, Zircon SW 7667, Summit Gray SW 7669, Pewter Cast SW 7673, Polished Concrete SW 9167, Light French Gray SW 0055, Fleur de Sel SW 7666, Reflection SW 7661, Evening Shadow SW 7662, Steely Gray SW 7664, Wall Street SW 7665, Uncertain Gray SW 6234, Foggy Day SW 6235, Grays Harbor SW 6236, Tricorn Black SW 6258, Iron Ore SW 7069, Caviar SW 6990, Black Magic SW 6991, Inkwell SW 6992, Black of Night SW 6993, Greenblack SW 6994, Domino SW 6989, Bohemian Black SW 6988, Black Fox SW 7020, Urbane Bronze SW 7048, Sealskin SW 7675, Black Bean SW 6006, Rock Bottom SW 7062, Rookwood Dark Red SW 2801, Portabello SW 6102, French Roast SW 6069, Mocha SW 6067, Foothills SW 7514, Tea Chest SW 6103, Kaffee SW 6104, Uber Umber SW 9107, Otter SW 6041, Nutshell SW 6040, Hot Cocoa SW 6047, Terra Brun SW 6048, Rookwood Dark Brown SW 2808, Rookwood Brown SW 2806, Java SW 6090, Sturdy Brown SW 6097, Steady Brown SW 6110, Coconut Husk SW 6111, Homestead Brown SW 7515, Meadowlark SW 7522, Rivers Edge SW 7517, Maison Blanche SW 7526, Sand Beach SW 7529, Almond Roca SW 9105, Woven Wicker SW 9104, Totally Tan SW 6115, Tatami Tan SW 6116, Smokey Topaz SW 6117, Leather Bound SW 6118, Cavern Clay SW 7701, Spiced Cider SW 7702, Wheat Penny SW 7705, Brandywine SW 7710, Redend Point SW 9081, Sands of Time SW 6101, Tawny Tan SW 7713, Ligonier Tan SW 7717, Dromedary Camel SW 7694, Real Red SW 6868, Show Stopper SW 7588, Positive Red SW 6871, Heartthrob SW 6866, Burgundy SW 6300, Fine Wine SW 6307, Red Bay SW 6321, Antique Red SW 7587, Fired Brick SW 6335, Sun Dried Tomato SW 7585, Wild Currant SW 7583, Rookwood Red SW 2802, Bravado Red SW 6320, Luxurious Red SW 6314, Rave Red SW 6608, Red Tomato SW 6607, Tanager SW 6601, Fireweed SW 6328, Red Barn SW 7591, Rustic Red SW 7593, Enticing Red SW 6600, Poinsettia SW 6594, Flower Pot SW 6334, Bold Brick SW 6327, Sierra Redwood SW 7598, Brick Paver SW 7599, Knockout Orange SW 6885, Navel SW 6887, Osage Orange SW 6890, Obstinate Orange SW 6884, Carnival SW 6892, Invigorate SW 6886, Raucous Orange SW 6883, Cayenne SW 6881, Rhumba Orange SW 6642, Copper Harbor SW 6634, Emberglow SW 6627, Sunset SW 6626, Hearty Orange SW 6622, Determined Orange SW 6635, Husky Orange SW 6636, Yam SW 6643, Amber Wave SW 6657, Serape SW 6656, Marigold SW 6664, Saffron Thread SW 6663, Coral Reef SW 6606, Charisma SW 6605, Begonia SW 6599, Lei Flower SW 6613, Rejuvenate SW 6620, Persimmon SW 6339, Copper Mountain SW 6356, Copper Pot SW 7709, Earthen Jug SW 7703, Gingery SW 6363, Forsythia SW 6907, Cheerful SW 6903, Decisive Yellow SW 6902, Confident Yellow SW 6911, Daisy SW 6910, Daffodil SW 6901, Gusto Gold SW 6904, Goldfinch SW 6905, Lemon Twist SW 6909, Goldenrod SW 6677, Sunflower SW 6678, Butterfield SW 6676, Curry SW 6671, Gold Crest SW 6670, Yarrow SW 6669, Banana Cream SW 6673, Jonquil SW 6674, Brittlebush SW 6684, Auric SW 6692, Kingdom Gold SW 6698, Cut the Mustard SW 6384, Butterscotch SW 6377, Gold Coast SW 6376, Tigereye SW 6362, Saucy Gold SW 6370, Bosc Pear SW 6390, Nankeen SW 6397, Sassy Green SW 6416, Naples Yellow SW 9021, Enjoyable Yellow SW 6666, Sea Salt SW 6204, Pewter Green SW 6208, Ripe Olive SW 6209, Oyster Bay SW 6206, Comfort Gray SW 6205, Retreat SW 6207, Evergreen Fog SW 9130, Clary Sage SW 6178, Artichoke SW 6179, Oakmoss SW 6180, Liveable Green SW 6176, Softened Green SW 6177, Austere Gray SW 6184, Dried Thyme SW 6186, Rosemary SW 6187, Shade-Grown SW 6188, Rainwashed SW 6211, Quietude SW 6212, Halcyon Green SW 6213, Underseas SW 6214, Rocky River SW 6215, Jasper SW 6216, Haven SW 6437, Dill SW 6438, Greenfield SW 6439, Courtyard SW 6440, Cilantro SW 6453, Shamrock SW 6454, Hunt Club SW 6468, Greens SW 6748, Derbyshire SW 6741, Kilkenny SW 6740, Isle of Pines SW 6461, Kale Green SW 6460, Restful SW 6458, Contented SW 6191, Basil SW 6194, Rock Garden SW 6195, Sage SW 2860, Naval SW 6244, In the Navy SW 9178, Salty Dog SW 9177, Dress Blues SW 9176, Dark Night SW 6237, Rainstorm SW 6230, Indigo Batik SW 7602, Rock Candy SW 6231, Sleepy Blue SW 6225, Languid Blue SW 6226, Meditative SW 6227, Refuge SW 6228, Tempe Star SW 6229, Upward SW 6239, Windy Blue SW 6240, Aleutian SW 6241, Bracing Blue SW 6242, Distance SW 6243, Drizzle SW 6479, Watery SW 6478, Tidewater SW 6477, Lagoon SW 6480, Green Bay SW 6481, Cape Verde SW 6482, Oceanside SW 6496, Manitou Blue SW 6501, Loch Blue SW 6502, Loyal Blue SW 6510, Secure Blue SW 6508, Resolute Blue SW 6507, Commodore SW 6524, Denim SW 6523, Hinting Blue SW 6519, Honest Blue SW 6520, Cosmos SW 6528, Indigo SW 6531, Regale Blue SW 6801, Lobelia SW 6809, Still Water SW 6223, Honorable Blue SW 6811, Izmir Purple SW 6825, Concord Grape SW 6559, Dewberry SW 6552, Majestic Purple SW 6545, Mature Grape SW 6286, Grape Harvest SW 6285, Plummy SW 6558, Wood Violet SW 6557, Purple Passage SW 6551, Mythical SW 6550, Ash Violet SW 6549, Wisteria SW 6822, Brave Purple SW 6823, Forget-Me-Not SW 6824, Clematis SW 6831, Impulsive Purple SW 6832, Kimono Violet SW 6839, Vigorous Violet SW 6838, Enchant SW 6555, Inspired Lilac SW 6820, Dahlia SW 6816, Gentian SW 6817, Valiant Violet SW 6818, Passionate Purple SW 6981, African Violet SW 6982, Fully Purple SW 6983, Amaryllis SW 6591, Grenadine SW 6592, Coming up Roses SW 6584, In the Pink SW 6583, Dragon Fruit SW 6855, Exuberant Pink SW 6840, Cerise SW 6580, Gala Pink SW 6579, Jaipur Pink SW 6577, Childlike SW 6569, Romance SW 6323, Quaint Peche SW 6330, Rose Colored SW 6303, Fading Rose SW 6296, Rose SW 6290, Orchid SW 0071
Frequently asked questions
How do I measure for a replacement window sill?
Measure the length between the jambs, the depth from the window to the leading edge, and — for return sills — the horn length past each side. Our configurator accepts dimensions from 8 to 160 inches to 1/2-inch precision.
What edge profiles are available?
Eased, bevel, bullnose, cove, ogee and Roman ogee, applied to the top arris, bottom arris or both, from 1-1/2-inch solid stock up to a 4-inch laminated build-up.
Can inside corners be radiused?
Yes. Each inside corner on a return sill can be left square or routed to a 3/4-inch radius — the standard for stone and solid-surface fabrication — independently per corner.
What tolerance do you fabricate to?
Every sill is made to your exact dimensions, accurate to ±0.5mm.
More about custom window sills
Explore our window sill materials and colors (hardwood and solid surface), read the frequently asked questions, or contact us about a custom piece.