A skylight's only as good as the flashing around it, done properly, it brings in light without ever becoming the spot your roof leaks from. Prestige Roofing Solutions installs new skylights and fixes existing ones that have started letting water or condensation in. Based in Blacktown, working across Sydney, on tile and Colorbond roofs alike.
A water stain on the ceiling directly below a skylight almost always means the flashing’s failed, not the glass itself, that’s the seal around the unit where it meets the roof, and it’s the single most common point of failure.
Fogging or condensation trapped between the panes on a double-glazed skylight means the seal inside the unit has gone, that’s a sign the unit itself needs replacing rather than just resealing around it. A cracked or yellowing dome on an older polycarbonate skylight is a straightforward sign it’s past its working life.
And if a skylight’s just never let in as much light as you expected, sometimes that’s a sizing or placement issue from the original install, worth an actual look rather than assuming nothing can be done.
A full roof replacement is more than swapping old tiles or sheets for new ones. Done properly, it means stripping the roof back to the structure, checking what's underneath, and rebuilding it so the whole system works together. Here's what's involved in a standard re-roof:
Fixed skylights don’t open, they’re the simpler option and the more common one for straightforward extra light in a hallway, bathroom, or living space. Venting skylights open, either manually or electrically, and double as ventilation, useful in bathrooms and kitchens where moisture buildup is a genuine problem, not just a light one.
Venting units cost more and have a moving seal that needs proper installation to avoid becoming a future leak point. If ventilation isn’t actually the goal, fixed is usually the simpler, more reliable choice.
If a skylight's leaking but the unit itself, the glass or dome, is in decent condition, reflashing and resealing around it is usually enough, and considerably cheaper than swapping the whole thing out. Replacement makes more sense once the unit's fogged internally, cracked, or old enough that the flashing's failed more than once already. We'll check which applies before recommending either, there's no point resealing a unit that's going to need full replacement in a year anyway.
Cost depends on whether it's a new install, a straightforward reseal, or a full unit replacement, and on skylight size and roof type. We'll confirm the actual number after a look, not a guess based on a phone description.
Where a skylight sits matters more than people expect, north-facing catches more light through the day, but also more heat in summer. Worth talking through before committing to a spot.
Tile and Colorbond skylights are flashed differently. This isn't something to guess at, the wrong flashing approach for the roof type is exactly how leaks start.
Sydney's swing between hot, dry stretches and sudden heavy rain puts real pressure on skylight seals over time, which is why flashing quality matters more here than the skylight brand itself.
A single skylight added to an existing roof is generally low-impact enough to fall outside anything requiring council approval in NSW, though this can vary depending on the property and the size of the unit. Worth checking for your specific situation rather than assuming either way.
We care for your roof as if it were our own.
Straight answers to help you make the right decision for your home.
Almost always the flashing around it, not the glass or dome itself. Once flashing fails, water gets in around the edges rather than through the unit.
Often, yes. If the unit’s in decent shape and it’s the flashing that’s failed, resealing and reflashing usually solves it without needing full replacement.
Fixed doesn’t open, it’s just for light. Venting opens for airflow too, useful in bathrooms and kitchens, but costs more and has an extra seal to maintain.
Usually not for a single unit added to an existing roof, but it can depend on the property and size. We’ll flag it if your specific job needs a check.
Most single-skylight jobs take a day, sometimes less. Larger units or ones requiring roof framing changes can take longer.
Based in Blacktown, working across Hills Shire, Frenchs Forest, Inner West, North Sydney, Penrith, Wentworth Falls, Sutherland Shire, Liverpool, Richmond, and Windsor.
