Skylight Leaks on Your Florence, SC Roof: How This Repair Works

A steady tick of water hits the hardwood below the kitchen skylight. You set a towel down, look up, and there it is: a dark ring spreading across the drywall where the shaft meets the ceiling. Outside, the afternoon thunderstorm that rolled off the Pee Dee an hour ago has already moved on. The glass looks fine. So where is the water coming from?

What a Skylight Leak Repair Actually Costs

Most skylight leaks in Florence homes are not the skylight itself failing. They are the flashing and seals around it. That matters for your wallet, because the fix ranges widely depending on which part gave out.

Here are realistic numbers we see on Florence homes:

• Re-sealing and minor flashing touch-up: roughly $200 to $500. This covers cracked sealant, a lifted flashing edge, or debris damming water at the top of the curb.
• Full flashing kit replacement: roughly $500 to $1,200. When the metal around the skylight is corroded or was installed poorly, replacing the entire flashing system is the honest fix.
• Skylight unit replacement: roughly $900 to $2,500 installed, depending on size and whether the frame or glass seal has failed.

The reason a leak “near the skylight” can cost $250 or $2,000 is that the water may be entering a foot away and traveling down the framing before it drips. That is why chasing the drip location alone often leads to the wrong repair. A proper look at the flashing, the shingles above, and the interior shaft is what tells you which bucket you are in.

Why Skylights Leak Here in the First Place

Florence gets intense, wind-driven summer rain. Water does not just fall straight down. It gets pushed sideways and uphill against the top edge of a skylight curb, which is exactly the spot builders count on flashing to protect.

Three things drive most of the leaks the crew repairs:

Failed sealant. The bead of caulk or roofing cement around a skylight has a real lifespan. Under our summer heat and UV, it dries, shrinks, and cracks in as little as five to eight years. Once it splits, wind-driven rain slips underneath.

Bad or aging flashing. Skylights use a layered set of metal pieces, called flashing, that weave into the shingles to shed water around the opening. If the original install skipped the proper step flashing or used a smear of tar instead, it was a leak waiting to happen.

Ponding debris. Oak leaves and pine straw pile up on the high side of a skylight and hold water there. Sit water on any seam long enough and it finds a way in. We cover the debris side of this in our year-round maintenance guide for Florence homes.

How the Repair Is Diagnosed and Done

The first job is finding the true entry point, not the drip. A good roof inspection checks the flashing seams, the shingles just above the skylight, and the interior shaft for stains that reveal the water’s path.

Say a homeowner off Cherokee Road had a ceiling stain widen after two storms. The glass sealed tight, but the top-corner step flashing had lifted about a quarter inch. Water was riding under it during sideways rain and traveling four feet down a rafter before dripping. The fix was re-setting and sealing that flashing corner, about $380. No new skylight needed.

A different case near Lake City looked identical from inside, but the flashing metal was rusted through along the bottom edge. That one needed a full flashing kit and a few replacement shingles, closer to $950. Same symptom, very different repair.

This is the same logic behind flashing leaks anywhere on your roof. If you want the deeper version, our post on how sneaky roof flashing leaks work walks through it. The takeaway: skylights leak at their edges far more often than through the glass.

When to Act, and What to Do Right Now

A slow skylight drip is not usually an emergency, but it is not a wait-and-see problem either. Trapped moisture rots the wood shaft and feeds mold inside the ceiling cavity. What starts as a $350 flashing reseal can grow into drywall and framing work if it sits through a full storm season.

If you see active dripping during a storm, put a bucket down and photograph the ceiling stain and the skylight from the ground. Do not climb a wet roof. If water is pouring rather than dripping, that is when temporary tarping buys you time until a dry-day repair.

For anything beyond a surface reseal, this is our bread and butter. Our roof repair service starts by finding where the water truly enters, so you pay to fix the actual problem and not just the spot where it showed up.

Frequently Asked Questions

My skylight is only eight years old. Shouldn’t it still be under warranty instead of needing a repair?

Possibly, but read the fine print. Skylight warranties usually cover the unit and glass seal, not the flashing and sealant around it, and not labor. Since most Florence leaks are flashing or sealant, they often fall outside the warranty. An inspection tells you which part failed, which is exactly what you need to make a warranty claim if one applies.

Can’t I just run a fresh bead of caulk around it myself and save the money?

You can, and sometimes it holds for a season. The risk is that caulk on top of failed flashing hides the real problem while water keeps rotting the wood underneath. If the sealant is the only issue, a touch-up is fair. If the flashing is lifted or rusted, caulk is a band-aid on a broken pipe. That is why we diagnose first.

Do I really need someone to come out, or is a ceiling stain always the skylight?

Not always. Water travels along framing, so a stain near a skylight can actually come from a nearby vent, a valley, or lifted shingles above it. Guessing wrong means paying for a repair that does not stop the leak. A short ground-level and on-roof look confirms the source before anyone spends a dollar on materials.

If the drip is real, the honest first step is finding out what is actually leaking. We will tell you what we see, whether that is a $300 reseal or something more, and let you decide from there.