Layout and roof assessment
Roof type, framing, slope, attic access and ceiling layout are surveyed, and skylight positions are chosen for light without cutting critical framing.
A skylight is a hole in the roof made to admit light without admitting water — and the flashing, curb, glazing and shaft details decide which of those two things happens. This page explains what skylight installation involves in Los Angeles homes, from fixed units over hallways to venting units over bathrooms and kitchens.

Skylight installation cuts a roof opening, frames and curbs it, flashes it to the roofing system, sets a fixed or venting skylight with Title 24-compliant glazing, and finishes a light shaft through the attic to the ceiling below. The roof type matters: tile, composition and flat roofs each need different flashing, and a skylight in a fire-zone area faces Chapter 7A glazing and ember considerations for the parcel.
Cost varies by skylight size and type, roof type, shaft length and finish; pricing is set out in a written estimate after the site visit. The scope below is what a written estimate should itemise instead: opening, curb, flashing, glazing, shaft and finishes.
Skylight scopes range from a single fixed unit to multiple venting units. The stages below cover a typical fixed installation, with venting differences noted.
Roof type, framing, slope, attic access and ceiling layout are surveyed, and skylight positions are chosen for light without cutting critical framing.
The roof opening is cut, framing is reinforced where needed, and a curb is built to the height and slope the roofing system requires.
Step flashing, counter-flashing and underlayment are installed as a water-shedding system matched to the roof type — tile flashing differs from composition flashing.
The skylight is set level on the curb, sealed, and glazed to Title 24 requirements for the climate zone, with venting units wired and controlled where fitted.
The shaft through the attic is framed, insulated and drywalled, with ceiling trim finished and the shaft splayed or straight to suit the light wanted.
The installation is checked for leaks, operation and light, and the finished skylight and shaft are walked against the written scope.
Roof, framing, attic and ceiling are surveyed, and skylight size, type and positions are set from light goals and framing.
The permit path, Title 24 glazing and any fire-zone requirements for the parcel are checked before ordering.
The opening is cut, the curb is built, and the flashing system goes in before the skylight is set.
The skylight is set and sealed, and the light shaft is framed, insulated and drywalled to the ceiling.
Trim, paint and controls are finished, the skylight is operated and checked, and the job is walked against the written scope.
Roof, framing, attic and ceiling are surveyed, and skylight size, type and positions are set from light goals and framing.
Roof type, slope, framing and attic access are surveyed before cutting, since each roof system needs its own flashing approach.
Tile, composition and flat roofs each receive the flashing system built for that roofing, not a generic kit applied to all three.
Curbs are built to height and slope requirements, and shafts are framed and insulated so the skylight does not become a heat or condensation problem.
Glazing is checked against Title 24 requirements, and venting units are operated, wired and controlled before handover.
The finished installation is checked for water entry at flashing, curb and shaft joints before finishes close the attic side.
Silver Lake skylights in 1920s homes often light dark hallways and bathrooms, with shaft lengths and roof framing — not skylight choice alone — deciding the scope and light achieved.
Sherman Oaks skylight scopes are often part of a kitchen or bathroom remodel: venting units over bathrooms for light and air, fixed units over kitchens and hallways for daylight.
Where this work fits in Los Angeles: Silver Lake · Los Feliz · Sherman Oaks · Studio City · Woodland Hills · Echo Park.
Skylight failures are roof failures. These are the problems to scope for.
Ask a pro →Leaks trace to flashing, curb height or underlayment details, not to the skylight unit itself. The flashing system is the scope, not the glass.
An uninsulated shaft condenses in cool weather and drips. Shaft insulation and ventilation are part of installation.
A skylight placed without sun consideration overheats the room below. Position, glazing and shading are chosen together.
A long, narrow, straight shaft delivers less light than a splayed shaft. Shaft shape is designed for the light wanted, not left to framing convenience.
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Fixed skylights give light only; venting skylights give light and air, suited to bathrooms and kitchens. Venting units need wiring, controls and rain sensors where fitted.
Cutting a roof opening and changing framing generally requires an LADBS permit and inspection. A skylight is a structural and envelope change, not a cosmetic one — confirm the scope against current LADBS rules.
A skylight flashed as a system to the roof type, with proper curb height and underlayment, should not leak. Leaks almost always trace to flashing details, which is why the flashing scope is specified in writing.
Parcels in a Very High Fire Hazard Severity Zone face Chapter 7A requirements that can touch glazing and ember resistance. Confirm what applies to the parcel before choosing a unit.
Call (424) 337-6597 to talk through your skylights: positions, roof type, flashing and glazing, before any roof opening is cut. Radiant Renovations Co. is open 24 hours, 7 days a week.
Get Free Estimate (424) 337-6597 →Call (424) 337-6597 to talk through your project. Radiant Renovations Co. is open 24 hours, 7 days a week. Tell us what you want to change and we will talk through what it takes, including the permit path for the scope.