Fixed skylights
A sealed unit that does not open, with fewer moving parts and one less place for a gasket to fail. Leaks are almost always at the flashing, the sealant or the glass seal.
Serving Montgomery County
Skylight Repair and Installation in Souderton
Leaking skylights, failed seals and flashing, condensation, and installing or replacing a skylight in the roof.
- Roof repair and full replacement
- Leaks, wind and storm damage
- Connected to a local roofer
Get a fast quote
Fastest: call (833) 751-2102. Or send this and we call you back.
Skylights
Skylight Repair and Installation: what it covers
Quick answer
Most leaking skylights fail at the flashing and the curb around the glass, not the glass itself. Old seals dry out, shingles above get disturbed, and condensation is often mistaken for a leak. Souderton Roofing connects Souderton homeowners with a local roofer in Montgomery County who finds the entry point and quotes the repair on site.
A skylight is a hole in the roof with a window in it, and every edge of that hole has to shed water. On a typical installation, a curb or frame sits on the deck, flashing wraps it, shingles overlap the flashing, and a gasket or sealant closes the glass to the frame. When any one of those layers fails, water finds the gap, and because it travels along rafters before it drips, the stain on the ceiling may not be directly under the skylight.
Skylight leaks are often blamed on the unit when the actual cause is the surrounding roof. Missing or lifted shingles upslope, a gap in the head flashing, a clogged channel above the frame or a worn sealant bead can all let water in. On the other side, a stain that appears only on cold mornings and dries by afternoon may be condensation on the glass or frame, which is a different problem with a different fix.
Souderton Roofing is a call line. Describe where the water appears and when, and you are connected with a local roofer who works your town, who inspects it, repairs or replaces it, and quotes on site.
- Service area
- Souderton & Montgomery County
- Availability
- Call to reach a local roofer
- Phone
- (833) 751-2102
Warning signs
Signs you need skylight repair and installation
Do not climb up to a skylight to seal it yourself, and do not stand on or lean against the glass, which can break under a person's weight. Put a bucket under a drip, photograph the stain, and call.
- A brown or yellow ring on the ceiling or on the walls of the light shaft around the skylight
- Drips at the corners of the frame during a heavy rain or snow melt
- Fogging or a milky film between the panes of a double-glazed unit
- Cracked, peeling or missing sealant around the glass or along the flashing
- Shingles curled, lifted or missing in the area around and above the skylight
- Water beading and dripping off the frame on cold mornings, without a stain that returns after rain
- Rust at the flashing screws or discolored wood around the curb
- Mold or soft drywall in the shaft that keeps coming back after cleaning
Our process
How our skylight repair and installation visit works
Describe when the water shows up
Tell the roofer whether it drips in rain, only in snow melt or on cold mornings. Timing separates a flashing leak from condensation and helps the roofer know what to look for first.
Inspect the roof around the skylight
Shingles above and beside the unit, the flashing on all four sides, the sealant and the attachment points are checked. Water often enters at the upper edge, where debris and snow collect.
Look inside the shaft and under the roof
The light shaft, the framing and the attic side are inspected for staining and rot. Insulation around the shaft is checked as well, because gaps there can cause condensation.
Choose between resealing, reflashing and replacing
A dry sealant bead can be redone. Failed flashing is renewed. A unit with fogged glass, a cracked frame or old, rotted framing is usually replaced.
Do the work and rebuild the surrounding roof
New flashing is woven into the shingles so that water runs over each layer. Underlayment and shingles around the unit are repaired, and the interior shaft is sealed where needed.
Hand over what to watch
You are told which stains are old and which would be new, and what the next heavy rain should and should not show. Interior drywall repair is a separate job.
Cost
How much does skylight repair and installation cost in Souderton?
No local price is listed for skylight work. A quote from the roofer rests on the following.
| Job | Typical range | What it includes |
|---|---|---|
| Resealing or re-flashing an existing skylight | Quoted on site | Depends on roof pitch, access and how much surrounding roofing is disturbed |
| Replacing the unit in the same opening | Quoted on site | Depends on the size, type and whether the curb is reusable |
| Installing a new skylight | Quoted on site | Adds framing, shaft work and interior finishing, and may need a permit |
| Repairing water-damaged framing or drywall | Quoted on site | Depends on how long water has been getting in |
Estimates for Montgomery County in 2026 are confirmed on site before any work starts. Ask whether the quote includes the interior shaft and drywall, because roofers often finish at the roof.
Is it a leak or condensation?
A leak usually shows up during or after rain or snow melt and leaves a stain that returns. Condensation shows up on cold mornings, as droplets on the glass or frame, and dries out during the day. A roofer can tell the difference by checking the flashing and the surrounding insulation.
Condensation is warm, damp indoor air meeting a cold surface. Bathrooms, kitchens and humid living areas with a skylight overhead are the usual places. The glass is colder than the walls, so moisture collects there first.
That can mean the fix is not at the roof at all. Better ventilation in the room, an uninsulated light shaft or gaps in the air sealing around the frame are common causes. If water is dripping from the frame only on cold mornings, tell the roofer so the visit starts in the right place.
Why do skylights leak more on older roofs?
On older homes, sealants have dried out, flashing has been patched more than once, and several layers of shingles sit around the curb. Each of those makes it harder to keep the weave of flashing and shingles tight. A re-roof around the skylight often fixes what a caulk bead cannot.
A tube of sealant is the usual first attempt at a skylight leak, and it sometimes holds for a season. It does not repair a flashing that has pulled away or a shingle course installed in the wrong order. Over time, sealant on top of sealant makes the repair harder for the next roofer.
The reasonable question to ask is whether the skylight is reaching the end of its life along with the roof around it. If you are planning a new roof, it is much easier to replace the skylight flashing at the same time. See the roof replacement page for how that job goes.
What do winters do to skylights in Montgomery and Bucks counties?
Third-party figures put the Souderton area at about 20 inches of snow and 50 inches of precipitation a year. Snow piles against the frame, melts and refreezes, and works on seals and flashing through repeated freeze-thaw. Ice dams upslope can also send water under the flashing.
A skylight in the lower half of a roof sits where melting snow runs down to the eaves, and where ice dams form. If water backs up under the shingles because of an ice dam, it can find the skylight flashing from above and look like a skylight leak. The ice dam removal and prevention page covers how that works.
Clear snow gently, if at all. Scraping at frozen snow near the frame with a metal shovel can gouge flashing and crack seals. If snow load worries you, the roofer is the person to ask.
Can a skylight be added to an existing roof?
Usually yes, if the framing allows it, but it is more than cutting a hole. A rafter has to be reframed, a shaft built through the attic and flashing integrated into the shingles. Permit rules vary by borough and township, so ask the roofer and the municipal office before the work begins.
Souderton Borough handles building permits under its code of ordinances and the Pennsylvania Uniform Construction Code, and other boroughs and townships set their own rules. Altering rafters is more than a surface repair, so mention the plan when you call and ask who pulls the permit.
Placement matters, too. A skylight above a valley, beside a chimney or on the face that holds the most snow adds risk. Ask the roofer why they would put it where they suggest, and what the alternative is.
Options
Types and options for skylight repair and installation
Vented (opening) skylights
These open for air, and many have a manual crank or an electric or solar operator. They add hinges and gaskets that wear. A roofer deals with the roof side, and an electrician with any powered controls.
Tubular skylights
A small domed unit on the roof feeding a reflective tube to a ceiling diffuser. They need less framing, and the roof curb and its flashing are still the likely leak points.
Curb-mounted and deck-mounted units
A raised frame sits on top of the roof, or the unit is mounted flush to the deck. The mounting style decides how the flashing is built, and it is one reason a replacement is not always a simple swap.
Montgomery County
Why skylight repair and installation is different in Montgomery and Bucks counties
Skylights go in older houses as additions, and many borough homes and farmhouses around Souderton and Harleysville have been altered over the decades. A skylight installed in a previous owner's era may have been set into a roof that has since been re-roofed around it, which is where flashing and shingle courses often stop matching.
Third-party housing data for Souderton puts about 36.6% of homes in the 1940s to 1960s and 29.8% before 1939. A roofer who works older houses expects to find several layers around a skylight and deck that needs checking once the flashing comes off.
Summer storms in the region bring wind and fallen limbs as well as rain, and a limb hitting glass or a frame is a different repair from a flashing leak. The remnants of Ida in September 2021 caused significant roof damage reports around Ambler, Fort Washington and Willow Grove, a reminder that a skylight is one more roof opening to check after a bad storm.
Skip the guesswork. Call for a straight answer.
Tell us what's happening and we'll tell you honestly whether it's a quick fix, and what skylight repair and installation should cost.
Where we work
Skylight Repair and Installation across Montgomery County
- Skylights in Souderton
- Skylights in Franconia
- Skylights in Telford
- Skylights in Hatfield
- Skylights in Harleysville
- Skylights in Lansdale
- Skylights in Hilltown
- Skylights in Sellersville
- Skylights in Skippack
- Skylights in North Wales
- Skylights in Green Lane
- Skylights in Schwenksville
- Skylights in Perkasie
- Skylights in Montgomeryville
- Skylights in Collegeville
- Skylights in Norristown
- Skylights in Red Hill
- Skylights in Blue Bell
- Skylights in Ambler
- Skylights in Doylestown
- Skylights in Pennsburg
- Skylights in Quakertown
- Skylights in Royersford
- Skylights in East Greenville
- Skylights in King of Prussia
- Skylights in Bally
Not sure if you're covered? Check your ZIP code.
Related
Related services
Roof Leak Repair
Finding and fixing roof leaks on Souderton-area homes, from flashing and pipe boots to worn shingles, through a local roofer.
Roof Flashing Repair
Valleys, sidewalls, vent boots and party walls: the metal and sealed joints where roof leaks tend to begin.
Roof Replacement
A full roof replacement for Souderton-area homes, from old rowhouse decks to farmhouse roofs, done by a local roofer you reach with one call.
FAQ
Skylight Repair and Installation FAQs
Can I seal my skylight leak with caulk from the hardware store?
It can slow a drip for a while, but it rarely fixes the cause. Skylights are meant to shed water through layered flashing and shingles. Caulk over a failed flashing or a bad shingle course often fails again and complicates the proper repair.
Why does my skylight drip only in winter?
Either it is condensation on a cold surface, or snow melt and ice are pushing water under the flashing. Condensation appears on cold mornings and dries, while an ice or snow leak shows up during a thaw. Describe the timing to the roofer.
The glass between the panes is foggy. Is that fixable?
A fogged double-glazed unit has usually lost its seal, and the glass cannot be cleaned from the inside. The usual fix is replacing the unit or the glass insert. A roofer can tell you if the frame and flashing are reusable.
Do skylights need a permit?
Replacing a unit in the same opening and adding a new one are different, and rules vary by borough and township. Souderton Borough works under its code of ordinances and the Uniform Construction Code. Ask the roofer and call the municipal office before you start.
Will a skylight make my attic or upstairs colder?
It can, if the shaft is poorly insulated or the frame leaks air. Insulation around the shaft and air sealing at the frame address it. A roofer or insulation contractor can check the shaft while they are in the attic.
Should I replace the skylight when I replace the roof?
It is worth asking about. New flashing is easiest to build while the old shingles are off, and a skylight at the end of its life is a leak waiting to happen under a new roof. The roofer can tell you the unit's condition.