Craftsman window trim is one of the easiest details to recognize from the street. No fluting, no rosettes, no fancy crown: just wide, flat casings, a head that sits heavier than the sides and a solid sill underneath. It looks built by hand because the original versions were, by a carpenter with straight lumber and a few honest joints.
The short version: Craftsman window trim uses flat, wide side casings, a head casing that is as wide or wider than the legs (often with a cap that overhangs them) and a deep sill, joined with simple butt joints instead of curved, mitred mouldings. Outside, start around 4 to 6 in for the legs, keep the head the heaviest part of the frame and match the front door one size up. Mouldex makes eight Craftsman exterior window and door trim profiles from 4 to 7 in, sold by the piece, cut and mitred on site, then primed and painted.
Here is what makes trim "Craftsman", how to get the proportions right, how it works on siding, stone, stucco and brick, and how to carry it to the front door and porch, for bungalows, new builds and commercial projects alike.
What Makes Window Trim "Craftsman"?
The Craftsman style grew out of the Arts and Crafts movement, which began in England in the late 1800s as a reaction against mass-produced ornament. In North America it became the American Craftsman style of roughly 1905 to 1930, spread by pattern books and mail-order plans, and it produced thousands of bungalows with low-pitched roofs, deep eaves and broad front porches. The idea was simplicity: show the natural materials, show how the house is put together and keep only the architectural details that look like they do a job.
Craftsman style window trim follows the same rule. Instead of a curved casing mitred at the corners, the classic version is a set of flat boards: two side casings, a head casing across the top, often with a cap that overhangs the legs, and a thick sill with an apron below. The head corners are butt joints rather than mitres, so the head reads as a separate, heavier piece and creates a strong horizontal line over every window.
The Parts of Craftsman Window Trim
Every version, in lumber or as a finished profile, uses the same components:
- Side casing (legs): flat, wide boards on each side of the window frame, plain or with a slightly eased edge.
- Head casing: the board across the top, the same width as the legs or wider, so the head looks heavier than the sides.
- Cap or head block: a thicker strip on top of the head casing that projects past its face and overhangs the legs. Outside, it also throws water off the top of the trim.
- Sill: a deep, sloped sill that extends past the legs and sheds water away from the wall.
- Apron: a flat board under the sill on many traditional houses, adding weight at the bottom.
Craftsman Trim Proportions: Head, Legs and Sill
Starting points for exterior Craftsman window trim:
| Element | Rule of thumb | Why it matters |
|---|---|---|
| Side casing width | About 4 to 6 in, wider on large or two-storey windows | Narrow casing disappears from the curb |
| Head casing | Same width as the legs or 1 to 2 in wider | A heavier head gives the signature horizontal line |
| Cap overhang | Roughly 1/2 to 1 in past the legs on each side | Casts a shadow without looking like a shelf |
| Sill | Projects past the legs and the wall face | Grounds the window and sheds water |
These are guidelines, not code; a cardboard template taped beside one window and viewed from the street is still the best test.
Interior vs. Exterior Craftsman Window Trim
Most search results for Craftsman window trim are interior DIY projects built with hand tools and power tools: select pine boards, wood glue, brad nails from a nail gun, a combination square, then filler in the nail holes, caulk along the drywall and paint. Outside, trim has a harder job: it covers the joint between the window and the wall, sheds water and sits in sun and freeze-thaw cycles for decades. Wood struggles there, and the head and sill are usually the first parts to rot. Exterior Craftsman trim needs the same look in a material that won't rot or warp. Our guide to window casing vs. window trim explains where casing ends and a full surround begins.
Mouldex Craftsman Exterior Window Trim Profiles
Mouldex offers eight exterior trim profiles in the Craftsman family, from 4 to 7 in wide. Each is a single cement-coated foamcore piece with a flat or stepped face, and most have a square top block built into the profile that does the job of the traditional head cap. All work as window and door trim. They are sold by the piece, cut and mitred on site, then primed and painted.
Vanhill 4 and Yates 4-7/8: slim profiles for siding
The Vanhill is a 4 in profile with a slim 1 in depth for walls where projection is limited, a mostly flat face and a small curved top edge. The Yates is 4-7/8 in wide with a broad flat face, a softened top edge and a 1-3/8 in projection that keeps it tidy on siding, stucco and fiber cement. Both can be curved for arched windows and suit smaller windows where a heavy casing would crowd the wall.
Zara 5: a built-in head cap
The Zara 5 in Craftsman trim is defined by a strong square top block that acts like a traditional Craftsman head cap, stepping into a cove and a broad flat face. Its 2 in projection gives windows a solid, well-anchored frame, and it suits stucco, brick, stone veneer and ICF.
Lawrence, Hamlet and Amelia 6: the classic width
The Lawrence has a square top block projecting 1-1/2 in that eases into a clean flat face, framing windows with a strong top line much like classic Craftsman casing. The Hamlet pairs a square top with a wide flat face and a 2-1/4 in projection for solid presence with understated detail. The Amelia steps through a small S-curve into a layered flat face, an orderly look suited to Craftsman and transitional homes.
Savona 6-1/2 and Tahoe 7: large windows and entries
For big openings and entry doors, the Savona is 6-1/2 in wide with an angled top that sheds water and a long curved sweep. The Tahoe 7 in is the largest of the family: a square top block eases into a broad flat face, and its 2 in projection keeps the tall face well proportioned on big windows and front doors.
Matching Craftsman Door Trim and Porch Columns
The front door should wear the same trim as the windows, usually one size up: 5 in at the windows with 6 in at the door, or 6 in with 7 in. Our exterior door trim guide covers door casing sizes, headers and surrounds in more detail.
The porch is the other half of the look. Traditional Craftsman porch columns are tapered and often sit on stone or brick piers; square columns with a simple capital and base are just as common and suit modern Craftsman builds. Square column wraps go around the structural post (they are decorative, non-load-bearing), and square column capitals and bases finish them with the same clean lines as the window trim. Our post on wrapping porch posts explains sizing and installation, and custom head caps, crossheads and other shapes can be made through our custom foam cutting service.
Craftsman Window Trim on Siding, Stone, Stucco and Brick
Craftsman houses mix materials, and the trim has to work on each one.
Siding
On lap siding, board and batten or shingles, the casing is the edge the siding finishes against, so it needs enough width and thickness to stand proud of the cladding. Wide, flat casing in a contrasting colour against siding is the classic look on a Craftsman style home, and carrying the same casing down onto a stone wainscot keeps the trim line continuous. The Vanhill and Yates suit siding where wall depth is limited.
Stone veneer and brick
Stone and brick are visually busy, so the trim needs a flat, generous face to hold its own. A 6 or 7 in profile with a strong top block reads clearly against fieldstone, ledgestone or brick, and a light trim colour separates the window from the texture. Use the same profile where a stone base meets siding above, so every window on the elevation matches.
Stucco
On stucco and EIFS, cement-coated trim is a natural match because it takes the same primer and paint as the wall, and the square top block of the Zara, Lawrence or Tahoe gives a stucco Craftsman the shadow line it would otherwise lack.
Pairing Craftsman Trim With Window Sills
The sill is where Craftsman windows get their weight. A flat, block-like sill that projects past the legs looks right with flat casing, while a heavily moulded sill pulls the look toward Colonial. Mouldex exterior window sills are sold separately, so any sill can be paired with any Craftsman profile. The Aery, for example, has a nearly square, block-like shape, a sloped top wash and an undercut drip edge, which suits the plain geometry of Craftsman casing.
Bungalows, New Builds and Craftsman Inspired Commercial Projects
Original bungalows call for restraint: match the existing width and don't add ornament the house never had. Modern Craftsman builds can scale up, with larger windows, 6 to 7 in casings, black window frames against white trim and stone bases on square columns.
The style works beyond single-family homes too. Craftsman inspired townhouses and multi-family buildings use wide casing and square columns to give each unit a front-porch feel, and restaurants and small retail buildings use it for a warm, handmade look. Finished profiles repeat the detail consistently across dozens of windows.
Installing and Finishing Exterior Craftsman Trim
Take each measurement from the window frame and mark the reveal before cutting each length. Mouldex trim is cut and mitred on site and attached with adhesive; mechanical fasteners are added depending on the weight of the piece, so there are usually no nail holes to fill. It is lighter than wood, much lighter than precast, moisture-inert and won't rot or warp. It arrives in a cement-grey finish that is primed, then painted with exterior latex or a textured brush coat. White trim against a mid-tone body colour is the most common design choice today; dark accents against light siding give a more modern look.
Craftsman Window Trim FAQ
What is Craftsman style window trim?
It's a simple, flat casing from the Arts and Crafts tradition: wide side casings, a heavier head casing that often has a cap overhanging the legs, butt joints instead of mitres at the head, and a thick sill with an apron. It favours straight lines and honest construction over curved or carved ornament.
How much overhang for Craftsman trim?
The cap or head block typically overhangs the side casings by about 1/2 to 1 in on each side, and the sill projects a little further.
What size is Craftsman trim?
Exterior Craftsman casing is usually about 4 to 6 in wide, with the head the same width or wider; large windows and entry doors can go to 7 in. Mouldex Craftsman profiles run from the 4 in Vanhill to the 7 in Tahoe.
What is the difference between Colonial trim and Craftsman trim?
Colonial trim uses curved, moulded profiles mitred at all four corners, often with a backband or pediment. Craftsman trim uses flat, wide casings, a heavier head that sits on top of the legs and plain edges.
What is the exterior trim around a window called?
It's called casing, or a window surround when it includes a head and sill. The vertical pieces are side casings or legs, the top is the head casing, and the bottom is the sill, sometimes with an apron below.
What is the best trim for exterior windows?
The best exterior trim keeps its shape and paint through sun, rain and freeze-thaw cycles. Wood needs regular repainting and can rot at the joints. Cement-coated foamcore trim gives the same flat Craftsman look in a material that is moisture-inert and won't rot or warp.
Ready to give your windows a true Craftsman frame? Browse our exterior window trim, order a free sample kit or send us your project.
