Skylight installation for Portland homes
Gray Portland winters make daylight worth a lot. We cut in new skylights, swap out tired acrylic domes and flash every unit so the opening stays dry through a long wet season.
Skylight installation in Portland usually runs $1,385 to $2,640 to replace an existing unit and $3,280 to $6,470 for a new opening with a drywall light shaft. Most jobs take one day on the roof. The key to a dry skylight here is the flashing kit, ice and water membrane around the curb and an underlayment collar, because rain runs across the opening for months.
Plenty of Portland houses were built with dark interior hallways, upstairs bathrooms with no window and kitchens tucked under a deep porch roof. A well placed skylight fixes that in a way a light fixture never will. On a gloomy February afternoon, a 2 by 4 foot unit facing north can brighten a room more than you'd expect, without the glare and heat a south facing one adds in August.
We install new skylights and replace old ones, and we do it as roofers first. That matters, because most skylight leaks come from the roof work around the unit, not the glass. We frame the opening, set the curb, wrap it in ice and water membrane, fit the factory flashing kit, and tie the shingles back in so water sheds past the unit instead of into the attic.
Which skylight type fits your room and your roof?
Here are the units we install most often on Portland roofs and where each one makes sense.
Fixed deck-mounted skylight
The simplest and most leak resistant choice. Laminated low-e glass, no moving parts, sealed to the deck with a matched flashing kit. Good for hallways, stairwells and vaulted living rooms where you want light but not airflow.
Solar powered venting skylight
Opens with a remote and closes on its own when a rain sensor gets wet, which is useful in a city where showers roll in fast. Works well in bathrooms and attic bedrooms that trap heat and steam.
Sun tunnel or tubular skylight
A 10 or 14 inch reflective tube that runs from the roof to a ceiling diffuser. No framing changes, little heat loss, and it fits between trusses. Best for closets, small baths and interior hallways.
Curb-mounted skylight
Sits on a raised wood curb, which helps on low pitches around 3 in 12 where water moves slowly. It is also the usual choice when matching an existing curb opening on an older roof.
When is it time for a new or replacement skylight?
These are the situations that usually lead Portland homeowners to call us about skylights.
Cloudy or yellowed acrylic dome
Older bubble skylights from the 1980s and 1990s turn hazy and brittle. Once the plastic crazes, it lets in less light, sheds heat badly and can crack when a fir branch drops on it in a windstorm.
Condensation dripping on the ceiling
Single pane units sweat all winter when warm bathroom or kitchen air hits cold glass. The water runs down the shaft, stains drywall and can rot the curb from the inside even if the roof flashing is fine.
You are already reroofing
A reroof is the cheapest time to replace a skylight. The shingles around it are coming off anyway, so the new unit gets fresh flashing and underlayment with no patchwork, and you skip a second trip later.
Dark rooms that need daylight
Interior hallways, stairwells, walk-in closets and windowless bathrooms are common in Portland bungalows and split levels. A skylight or sun tunnel puts natural light where a wall window is not possible.
Stuffy upstairs bedrooms
A venting skylight lets hot air escape from attic bedrooms in Craftsman and Old Portland homes. Opening one in the evening pulls cooler air through the house during late summer heat waves.
Leaks that keep coming back
If the same skylight has been caulked three times and still drips in November, the flashing or the curb is usually failing. Replacing the whole unit with a proper kit ends the cycle.
How we install a skylight that stays dry in Portland rain
Pick the spot from the attic
We check rafter layout, wiring, ducts and bath fans before anything gets cut. Placing the unit between rafters when possible keeps framing changes small, and we look at which slope gets the light you actually want.
Cut and frame the opening
We remove shingles, cut the decking, and add headers and doubled rafters where the opening interrupts the framing. Old curbs on replacements come out completely so any soft wood gets replaced before the new unit goes in.
Wrap the curb in membrane
Self-adhered ice and water membrane goes up the curb sides and out onto the deck, with an underlayment collar lapped so water above the skylight is directed around it. This is the layer that saves you when wind drives rain uphill.
Set the unit and flashing kit
We install Velux deck-mounted units with their matched step flashing kits, or curb-mounted units on low pitches. Head flashing tucks under the upslope shingles and the sill flashing laps over the downslope course, the way water expects.
Tie in shingles and finish inside
Shingles get woven back with the correct exposure and nailing. Inside, we build and insulate the light shaft, hang drywall, and leave it ready for paint, or we flare the shaft so a small skylight lights more of the room.
Water test before we leave
We run a hose over the finished unit from above while someone watches the shaft from inside. It's a simple step, and it catches a missed nail or folded flashing corner before the first real storm does.
Materials for skylight installation come from manufacturers such as Malarkey, GAF, Owens Corning, CertainTeed, Carlisle and Velux, chosen for the job rather than the logo.
What does skylight installation cost in Portland in 2026?
These are typical installed ranges for single family homes in the Portland metro. Price depends mostly on whether we are cutting a new opening and how long the interior shaft is.
| Work | Typical Portland range |
|---|---|
| Replace existing skylight, same openingper unit | $1,385 to $2,640 |
| New fixed skylight with framed light shaftper unit | $3,280 to $6,470 |
| Solar powered venting skylight, new openingper unit | $3,960 to $7,180 |
| Sun tunnel, 10 or 14 inchper unit | $865 to $1,720 |
| Skylight swap during a full reroofper unit | $1,190 to $2,280 |
These are typical Portland ranges, not a quote. Your real price comes after we look at the roof and attic and put a written estimate in your hands.
What moves the price:
- New cut versus same opening
- Shaft length and drywall finish
- Roof pitch and material
- Rafter or truss framing changes
- Fixed, venting or solar unit
- Blinds and accessories
Why Portland skylights need more care than the brochure suggests
Rain from about October through May means a skylight here sees standing water on its upslope side for weeks at a time. Fir needles and maple leaves pile against the head flashing, hold moisture, and grow moss right at the joint. On shaded lots in the Southwest Hills or around Mount Tabor, we often add a small diverter above the unit and recommend a yearly clear-out so debris does not dam water against the curb.
Older homes in Irvington and Laurelhurst usually have 2x4 or 2x6 rafters at odd spacing, plaster ceilings and knob and tube wiring in the attic. Those details change how we frame and how we finish the shaft, so we look at the attic first. In newer Beaverton and Happy Valley houses with trusses, a sun tunnel often makes more sense than a big framed opening, because cutting a truss needs an engineered fix.
What you get when a roofer installs your skylight
Flashing done by roofers
The leak risk sits in the shingle and flashing work, not the glass. We handle both sides of the opening, so there is no gap between the person who sets the unit and the person who patches the roof.
Attic checked before cutting
We look at framing, wiring and ducts first and tell you plainly if a sun tunnel or a different spot will work better. You don't find out about a buried bath fan duct halfway through.
Interior shaft finished properly
Insulated, vapor controlled shaft walls cut down on winter condensation. We leave smooth drywall ready for paint instead of handing you a raw opening to finish yourself.
One phone call to schedule
Call (503) 917-5484 any time. We answer 24/7, set a time to look at the roof and attic, and give you a written estimate for the unit and the shaft.
Skylight Installation questions from Portland homeowners
Do skylights in Portland always end up leaking?
No. Skylights that leak almost always have flashing, curb or condensation problems, not a bad unit. A deck-mounted skylight with a matched flashing kit, membrane around the curb and a proper underlayment collar handles Portland rain well. The ones we get called about are usually caulked domes from decades ago or units installed without a kit.
Which way should a skylight face on a Portland house?
North facing skylights give soft, even light with little summer heat, which suits offices and kitchens. South and west facing units bring more winter warmth but can overheat a room in July and August unless you add a shade. We look at your slopes, trees and the room below before recommending a spot.
Can you install a skylight on a Portland home with roof trusses?
Yes, but the approach changes. Cutting a truss needs an engineered repair, so on truss roofs in newer subdivisions we usually fit a unit that sits between two trusses or install a sun tunnel. Both bring in good daylight without altering the structure.
Should I replace my skylights when I replace my Portland roof?
If the skylights are more than about 15 to 20 years old, usually yes. The flashing around them gets redone during a reroof anyway, and a new unit costs less to install at that point than it will on its own later. Newer units in good shape can stay with new flashing kits.
How long does a skylight installation take in Portland?
A straight replacement in the same opening is usually done in half a day to a day. A new opening with a framed and drywalled light shaft takes one day on the roof plus a day or two inside for drywall and finishing. We watch the forecast and keep the opening covered if a shower moves in.
Do Velux skylights help with stuffy upstairs rooms in Portland?
A venting Velux skylight does. Opened on a summer evening, it lets the hottest air rise out of an attic bedroom while windows below draw in cooler air. The solar powered models close on their own when the rain sensor gets wet, so a sudden shower is not a problem.
Where we do this work most
We cover the whole metro. These are the places we are on roofs most often:
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Need skylight installation in Portland?
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