Natural light transforms a workplace, retail fit-out, or residential common area, but a poorly installed skylight can just as easily become the single biggest source of leaks on an otherwise sound roof. Commercial and Strata Roofing Group installs and replaces skylights across Sydney, bringing natural light into commercial buildings and strata complexes while ensuring every frame, flashing, and seal is fitted to a genuinely watertight standard. Our skylight specialists work on office buildings, retail premises, warehouses, and residential strata roofs throughout Greater Sydney, delivering results that complement our full range of commercial roofing services.
A skylight is essentially a large, deliberate penetration through the roof, and unlike a small pipe or vent, it needs to be correctly sized, structurally supported, and flashed on every side to prevent water tracking in from any direction. We regularly find poorly installed skylights during our roof condition report assessments, often the result of gaps left around the frame, incorrect flashing overlap, or sealant applied as a substitute for proper roofing detail rather than a supplement to it.
Beyond weatherproofing, skylight installation also needs to account for structural loading, thermal performance, and the specific roofing material it’s being fitted into, whether that’s Colorbond sheeting, tiled roofing, or a flat membrane system. Each substrate requires a different flashing approach, and getting this wrong is one of the most common causes of the leaks we resolve through our roof leak repairs service. Our team takes a genuinely roofing-first approach to every skylight project, ensuring the finished installation performs for decades, not just until the first heavy storm.
Adding natural light to a previously unlit space requires careful planning around roof structure, framing, and flashing detail to ensure a clean, watertight result. We install new skylights with fully engineered flashing systems suited to the existing roof material, drawing on the same precision we apply across our colorbond roofing and tiled roof installations.
Older skylights, particularly those with degraded acrylic domes or failed seals, are a common source of persistent leaks and reduced light performance. We remove and replace ageing skylights with modern, better-insulated units, correcting any underlying flashing issues in the process rather than simply swapping the dome and leaving the original leak path in place.
If your existing skylight has developed a leak, the cause is often failed flashing or perished sealant rather than the skylight unit itself. Our team diagnoses and reflashes leaking skylights to resolve the issue at its source, an approach closely tied to our targeted roof leak repairs and roof flashing repairs services.
Warehouses, retail premises, and industrial buildings often use larger roof light systems or multiple skylight units to reduce daytime lighting costs across expansive floor areas. We install and maintain commercial-scale skylight systems as part of our broader commercial roofing services, ensuring consistent weatherproofing across every unit.
Stairwells, lobbies, and common corridors in strata buildings benefit significantly from natural light, improving both amenity and energy efficiency across shared spaces. We work with strata managers and owners corporations to plan and install skylights in common property areas, an approach that integrates naturally with our dedicated strata roofing services.
For buildings needing broader natural light coverage than a standard skylight provides, fibreglass and polycarbonate roof sheeting offers a cost-effective alternative that integrates directly into the surrounding roof profile. We install and repair these panels as part of our dedicated fibreglass sheeting service, ensuring a seamless, weatherproof fit alongside standard roofing sheets.
The long-term performance of any skylight comes down to the quality of the flashing installed around it, particularly at the head, sides, and base where water flow needs to be carefully directed away from the opening. We apply purpose-designed flashing to every skylight installation, matching the technique to the roofing substrate as part of our comprehensive roof flashing repairs expertise.
We inspect the roof structure and intended skylight location, confirming suitability, structural capacity, and the correct flashing approach for the existing roofing material.
We help select the right skylight type and size for the space, whether that's a fixed dome, ventilated unit, or larger roof light system, and provide a clear, itemised quote.
Our team carefully cuts and frames the roof opening, ensuring correct structural support is in place before the skylight unit is fitted.
We install the skylight unit and fit purpose-designed flashing around every edge, ensuring a fully weatherproof seal suited to the specific roofing substrate.
All joints and flashing overlaps are sealed to a professional standard, eliminating the gaps and shortcuts that commonly lead to skylight leaks.
Every completed skylight installation is inspected for secure fixing and watertight sealing, with documentation provided confirming the work carried out.
Our skylight installation teams service commercial and strata properties throughout Greater Sydney, including:
We provide skylight installation services across Canterbury Bankstown, Inner West, Upper North Shore, Lower North Shore, Parramatta, Northern Beaches, The Hills District, Eastern Suburbs, Ryde, and Sutherland Shire.
Will installing a skylight void my roof warranty?
Not if it’s installed correctly by a qualified roofing contractor using proper flashing techniques suited to your roof material. Poor installation is the real risk to warranty coverage and roof performance.
Can a skylight be added to any type of roof?
Most roof types, including Colorbond, tiled, and membrane roofing, can accommodate a skylight, though the flashing approach and installation method differ for each substrate to ensure a watertight result.
Why is my existing skylight leaking?
Skylight leaks are almost always caused by failed flashing or perished sealant rather than a fault in the dome itself. Our roof leak repairs team can diagnose and resolve the true cause.
How long does skylight installation take?
Most single skylight installations can be completed within a day, though larger commercial roof light systems or multiple units may take longer depending on scope and access.
Do you install skylights in strata common areas?
Yes, we regularly install skylights in stairwells, lobbies, and corridors as part of our broader strata roofing services, working with strata managers to coordinate approvals and access.
What’s the difference between a skylight and a roof light system?
A skylight is typically a single unit providing light to one area, while a roof light system involves multiple panels or larger sections designed to illuminate broader commercial or industrial spaces.
Can you replace an old skylight without removing the surrounding roof?
Yes, in most cases we can remove and replace an ageing skylight unit and correct its flashing without disturbing the wider roof, minimising cost and disruption.
Do skylights help reduce energy costs?
Yes, quality skylights reduce the need for artificial lighting during the day, and modern units with improved glazing also help manage heat transfer, complementing broader roof insulation upgrades.
Commercial building owners, strata committees, and property managers across Sydney trust us with skylight installation because we approach every project as a roofing job first, ensuring the flashing and weatherproofing detail is right before anything else. This roofing-led approach is consistent with the standard we apply across our full commercial roofing services and strata roofing services offering, protecting your roof long after the skylight is fitted.
We carry comprehensive insurance, provide clear written quotes, and use quality skylight products matched to the right flashing system for your specific roof. Whether it’s a single residential-style dome or a full commercial roof light installation, our team delivers reliable, genuinely watertight results.
Request Your Skylight Installation Assessment
If you’re looking to bring natural light into your commercial or strata building, or need an existing skylight repaired or replaced, get the roofing side right from the start. Contact Commercial and Strata Roofing Group for a thorough assessment and a clear, honest quote.
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Your Local Roofers Pty Ltd trading as Commercial and Strata Roofing Group
PO Box 610, Wahroonga NSW 2076
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