Stucco return, drywall wrap, custom casing. The detail that makes new windows look like they were always there.
Most callbacks on a five-year-old install aren't about the glass. They're about the trim around it.
Drive any block in Mar Vista or Highland Park and look at the windows on a 1940s bungalow. The window itself is usually fine. The exterior casing is what gives the house away — split corners, peeling paint, daylight visible at the miter joints. In LA's climate (UV in summer, sideways rain in February, no real freeze cycle to speak of), trim degrades on a different timeline than the window unit itself, and the failure modes are predictable.
Roughly 90% of the homes we measure in LA have stucco-return exteriors — no exterior casing at all, the stucco is wrapped right up to the window frame. That's the regional convention, and it works when it's flashed and detailed correctly. When it isn't, water tracks behind the stucco at the head and sill, rots the framing, and you don't see it until the drywall inside starts to bubble. Interior casing has its own failure mode: paint adhesion. Trim that was caulked with the wrong product, or painted before the caulk fully cured, will telegraph hairline cracks at every miter within 18 months.
Trim is finish work, but the consequences of bad trim are structural. We treat it that way.
Per-window or per-door. Material plus labor, primed and ready for paint (paint not included unless specified).
The default LA exterior detail is a stucco return: the stucco wraps directly to the window frame, no exterior casing visible. It's clean, low-maintenance, and historically what every Spanish, Mediterranean, and post-war stucco home in the Valley was built with. If you're replacing windows in a stucco home in Sherman Oaks, Van Nuys, or Eagle Rock, the stucco return is almost always the right call — it's what the house wants.
The exception: craftsman bungalows in Pasadena, Highland Park, and pockets of West Adams were built with full exterior wood casing, often 4" to 5½" wide with a backband. Putting a stucco return on one of those houses reads as wrong from the curb, even if the bystander can't say why. For those homes we use fiberglass-composite or cellular PVC for the exterior casing — it takes paint, doesn't rot, and won't telegraph the way solid wood does after a decade of west-facing UV.
If you're not sure which your house wants, send us a photo. We'll tell you in 30 seconds.
Every one of these is something we've been called in to fix on someone else's work.
Every step has a deliverable, a name, and a fixed date. If we miss a date, we credit you $250 — written into your contract.
"We replaced eight windows and the previous contractor was going to skip the exterior trim — said the stucco return was 'fine.' Red Stag flagged that two openings had cracked stucco at the head and would leak. They re-detailed those two with composite casing and flashing tape. The other six got a clean stucco return. Made the call based on the wall, not a one-size answer."
"Standalone trim refresh on a 1928 craftsman — windows were fine, casing was a disaster. They milled a profile to match the original 5½" with the backband, stained the poplar to match the existing oak baseboards. Couldn't tell the new from the old after install."
"Got a quote from another company that was $400 cheaper but used MDF on exterior trim. Theo walked me through why that fails in two years. Spent the extra on PVC and it's been four years with zero issues, including through the 2024 storms."
Same crew, same trucks, same 45-minute drive if a miter opens in 2031.
Trim installation is the last 15% of a window or door project that determines how the first 85% is perceived. A well-installed window with mismatched casing, poor miters, or paint-over caulk looks like a patch job. A properly detailed window with flush-reveal casing, tight joints, and painted-in trim looks intentional and adds to the home's value presentation.
What changes when you replace a window. Old aluminum windows — particularly those installed in the 1960s–1980s — often used a California stucco-return finish at the exterior (no trim, just stucco returning to the frame) and minimal interior casing. Modern replacement windows typically use a different frame depth than the original, which means the existing interior jamb extension and casing won't fit the new unit. The reveal depth changes, the casing clips need to be repositioned, and the paint break point moves.
Exterior trim options in LA. The dominant exterior treatment in LA stucco homes is no trim — stucco returns to the window frame at a clean angle or with a simple bead. For traditional-style homes (Craftsman, Colonial Revival, Spanish), exterior trim boards (typically 1×4 or 1×6 PVC or cedar) are appropriate and sometimes required by HPOZ standards. We install both, and on stucco homes we use a backer rod and paintable sealant at the frame-to-stucco joint that accommodates thermal movement without cracking.
Interior casing matching. Matching existing interior casing profiles in an older LA home can be challenging because many profile patterns were discontinued decades ago. We carry a library of common historic profiles (craftsman flat-casing, colonial stop, ogee back-band) and can typically source a match from our millwork supplier within a few days. When a perfect match isn't available, we discuss three options: close match, custom-routed match, or unified new profile across all replaced openings.
Send us a photo of your existing trim and we'll tell you what profile it is, what your options are, and what it costs. No deposit to quote.
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