ACE London Roofing provides expert skylight and roof light installation services across Central London. Adding a skylight transforms dark loft conversions, top-floor rooms and flat-roof extensions — flooding spaces with natural light without sacrificing privacy or structural integrity. Our specialist team installs, repairs and replaces all types of skylights with a fully weathertight finish guaranteed.
Skylight Services We Offer
We supply and install all major skylight brands and types across Central London — from traditional Velux roof windows to contemporary flat roof lights and frameless glass panels.
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Velux Roof Windows
Centre pivot & top hung
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Flat Roof Lights
Fixed & opening options
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Skylight Replacement
Like-for-like & upgrades
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Skylight Leak Repair
Flashing & seal failures
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Lead Flashing Installation
Correct Code 5 lead
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New Roof Opening Cut
Structural lintel fitted
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Triple Glazed Skylights
Maximum thermal efficiency
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Solar Blinds & Glazing
Heat & UV control options
Transform Your Space With Natural Light
In Central London where space is at a premium and loft conversions are common, a well-positioned skylight can be transformative. Studies consistently show that natural light improves mood, productivity and the perceived size of a room. A properly installed roof window can increase the usable living area of a loft conversion significantly — and add genuine value to your property in London's competitive market.
The critical factor in skylight installation is the quality of the weatherproofing. A skylight installed without correct lead flashing, proper upstand sealing and compatible underlay integration will leak. Our team combines roofing expertise with joinery precision — ensuring your skylight is not just beautiful, but permanently watertight. Every installation is fully guaranteed.
Our Skylight Installation Process
1
Free Survey & Planning Advice
We assess your roof structure, pitch and rafter spacing — advising on the best size and position for your skylight. We also advise on permitted development rights and whether planning permission is required for your Central London property.
2
Product Selection & Quote
We help you choose the right skylight for your needs — fixed or opening, standard or triple-glazed, with or without integrated blinds. A fully itemised written quote is provided covering all labour, materials and any structural work required.
3
Structural Opening Prepared
Tiles are carefully removed, the rafter opening is cut to the correct size, and a structural lintel or trimmer is fitted where required to maintain roof integrity. Surrounding tiles are protected throughout.
4
Skylight Fitted & Weatherproofed
The skylight unit is installed, correctly squared and secured. Lead flashing is dressed around all four sides, underlay is integrated, and surrounding tiles reinstated to ensure complete weathertightness.
5
Internal Finish & Guarantee
The internal reveal is made good where required. Operation of opening skylights is tested and demonstrated. Full manufacturer and workmanship guarantees issued.
Recent Skylight Projects
Velux Installation — Camden
Flat Roof Light — Islington
Skylight Replacement — Hackney
Frequently Asked Questions
Do I need planning permission for a skylight in Central London?+
In most cases, installing a skylight that does not protrude more than 150mm above the roof plane is covered by permitted development rights and does not require planning permission. However, properties in conservation areas — which are widespread throughout Central London — may have restrictions, and listed buildings always require listed building consent. We advise on this during your free survey and can help you understand your specific planning position.
What size skylight do I need?+
The right size depends on the roof pitch, rafter spacing and the size of the room below. As a general rule, a skylight should provide at least 10–15% of the floor area in glazing for adequate natural light. We help you choose the right size during your free survey — maximising light without compromising the structural integrity of your roof.
Why is my existing skylight leaking?+
Skylight leaks almost always result from failed lead flashing, deteriorated rubber seals around the frame, cracked or lifted tiles adjacent to the unit, or condensation on single-glazed units being mistaken for a leak. We diagnose the exact cause before carrying out any repair — fixing the source rather than masking the symptom.
How much does skylight installation cost in London?+
A standard Velux roof window installation in an existing roof typically ranges from £600 to £1,400 including supply, installation and lead flashing. Flat roof light installations typically range from £900 to £2,500+ depending on size. Structural work, internal plastering and decoration are separate costs if required. We provide a fully itemised written quote covering all work.
Can you install a skylight in a flat roof?+
Yes — flat roof lights are one of the most popular additions to Central London flat-roof extensions and kitchen extensions. We install fixed and opening flat roof lights in a range of sizes, with double and triple glazing options. The installation requires correct upstand construction and waterproofing integration with the existing flat roof membrane — work our team carries out to the highest standard.