A skylight is a hole in the roof. Everything good about it, daylight in a dark 1920s stairwell in Hyde Park, a rear addition in Brookside that finally feels like part of the house, depends on the assembly around that hole doing its job through Kansas City’s weather. And the weather here is unusually hard on skylights: hail in spring, sharp freeze-thaw cycling in winter, and a high summer sun angle with heat that turns unshaded glazing into a heat source.
Hail is the central Kansas City skylight risk
If you own one thing on your roof that hail can end in a single afternoon, it is the skylight. The glazing material is the whole story.
Tempered and laminated glass units hold up substantially better than plastic. Many houses built in the 1990s and 2000s across Johnson County, Olathe, Lenexa, southern Overland Park, and in Lee’s Summit, Blue Springs, and Liberty got builder-grade acrylic or polycarbonate dome skylights. Those domes do not age gracefully in the Midwest. UV exposure crazes the surface into a web of fine cracks, the plastic yellows and clouds so the daylight it was installed to deliver dims, and the material grows brittle. A brittle twenty-year-old dome can crack in a storm that leaves the surrounding shingles functional, and then you have water entering through the middle of a roof plane rather than at an edge.
There is a related insurance problem. A dome that has been slowly failing for years is easy for an adjuster to characterize as wear rather than storm damage. Missouri’s Department of Commerce and Insurance has documented that roof coverage has narrowed over the past decade, and that actual cash value settlements can pay as little as twenty percent of replacement cost on a twenty-year-old roof, while replacement cost value policies pay full replacement. Read your own policy language on the skylight specifically before a storm, not after.
Every skylight is a flashing assembly
Homeowners shop glazing. Installers should be shopping flashing. The unit’s glass or plastic almost never leaks; the perimeter does.
Curb-mounted units sit on a built-up wooden curb above the roof deck, which raises the glazing out of the water path and is generally the more forgiving approach on low-slope sections and on the flat-roofed rear additions common in the Northeast and older parts of midtown. Deck-mounted units sit closer to the plane of the roof, look cleaner, and depend more completely on a precise flashing detail. Neither is universally correct.
What matters is that the flashing kit is the manufacturer’s kit for that specific unit, that roof pitch, and that roof covering. Site-fabricated flashing and generic kits are where skylight leaks come from. Ask the contractor, by name, which flashing kit they are installing and whether it is rated for your pitch. Ask, separately, how the warranty splits between the unit, the manufacturer’s, and the installation, which is the contractor’s. Those are two different warranties with two different lengths and two different people to call.
Condensation gets misdiagnosed as a leak all winter
A large share of KC winter skylight complaints are not leaks. Warm, humid interior air rises, hits cold glazing, and condenses. Skylights over bathrooms, kitchens, and laundry rooms are the usual suspects, and so are skylights in finished attic conversions, a very common remodel in Brookside and Waldo, where the shaft carries moist air straight to the coldest surface in the house.
The tells are worth knowing before you pay for a service call. Condensation shows up on cold days whether or not it has rained, wets the interior glass and the frame first, and drops off when you run an exhaust fan or lower indoor humidity. A flashing leak follows rain or snowmelt, often stains the drywall of the shaft rather than beading on the glass, and does not care what your humidistat says. Fixing condensation is usually ventilation and humidity work, sometimes insulating the shaft properly, not roofing.
Ice damming above the head, and summer heat below
Freeze-thaw cycling here does something specific to skylights. A skylight interrupts the roof plane, so snow and meltwater pile against the upslope side of the unit. When that water refreezes, the dam sits directly on the head flashing, and water backs up under the covering above it. This is why the upslope detail matters more than the sides, and why ice-and-water membrane run generously above the head and not only at the eaves, is worth insisting on during a reroof in this climate.
Summer is the other half. The metro’s high summer sun angle and sustained heat mean an unshaded skylight on a south or west exposure delivers real solar heat gain into a room that may already be the hottest in the house. Low-E coatings help. Interior blinds or shades, factory or aftermarket, help more than people expect. And on a west-facing slope where the goal was simply light rather than a view of the sky, a tubular daylight device, a sun tunnel, is often the better answer.
Sun tunnels as the lower-risk option
For the dark interior stairwells, hallways, and closets that define pre-1940 housing in Hyde Park, Brookside, and the Northeast, sun tunnels deserve more consideration than they get. The roof penetration is small and round, it usually fits between rafters without structural work, there is far less glazing to be hit by hail, and the heat gain is a fraction of a full skylight’s. You lose the view and the sense of open ceiling. In a windowless stairwell, that was never the point.
Cutting a new opening is structural work
Adding a skylight where none existed is not a shingle job. Rafters have to be cut and headed off, and that is framing. In Kansas City, Missouri, contractor licensing is administered by the City Planning & Development Department’s Permits Division under Article XII of the Kansas City Building and Rehabilitation Code, and the city publishes a searchable database of active licensed contractors you can check before signing anything. Critically, when roof rafters or other structural elements are repaired or replaced, a scope-of-work or plan submittal is required in addition to the license, which is exactly the situation when a new skylight opening is cut.
On the Kansas side, Johnson County issues a Class DR Roofing Contractor License covering roofing on all structures, with Class A, B, and C licenses also permitting roofing within their scope; the licensing office can be reached at (913) 715-2233. Note that Kansas has no statewide roofing license. State-level registration under the Kansas Roofing Registration Act is registration, not a competency license, and it should not be mistaken for one.
Timing: do it while the roof is open
Skylight seals and gaskets fail long before a roof covering does. That means a builder-installed unit from the 1990s that survived a reroof in the 2000s is well past its seal life now, and the reroof was the cheap moment to replace it. Reflashing an aging unit during a tear-off is usually false economy: the labor to get back to it later means opening a roof you just paid for. If the roof is coming off and the skylight is old, replace the unit.
A note on this directory’s data
No contractor currently listed in this directory lists skylight work as a service. That is a gap in our data, not a statement that skylight work is unavailable in the metro, plenty of roofing companies here handle skylight replacement and flashing, and some handle new openings. If skylights are what you need, ask a roofing contractor directly whether they do skylight replacement, whether they install the manufacturer’s flashing kit, and whether they take on new openings and the framing that comes with them. When we can confirm that information, we will list the field. This directory does not rank contractors and does not accept payment for placement.