Roof Windows & Skylights
Velux windows, skylights and roof ventilation installation and replacement across Kent, Sussex and Surrey.
About Our Roof Windows & Skylights Services
Natural light transforms a room. Whether you want to brighten a dark loft conversion, add daylight to a kitchen extension or improve ventilation in a stuffy bathroom, a roof window or skylight is one of the most effective improvements you can make. Properly installed, they flood interior spaces with light, reduce the need for artificial lighting and add real value to your property.
Radiant Roofing supplies and installs the full range of Velux roof windows, bespoke flat roof skylights and roof ventilation products. We handle everything from cutting the opening and reinforcing the structure through to fitting the window, integrating it with the surrounding tiles or slates, and installing the internal lining kit. Every installation is fully weatherproofed with manufacturer-approved flashing kits to prevent leaks.
If you are considering a roof window for a loft conversion, an extension or simply to bring more light into an existing room, contact us for a free consultation. We will assess the best size, position and type of window for your needs, and provide a clear quotation covering supply, installation and all associated roofing work.
Our Roof Windows & Skylights Services
Velux Window Installation
New Velux roof windows supplied and installed into pitched roofs. We handle the structural opening, flashing and tiling to deliver a watertight, factory-finished result.
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Flat Roof Skylights
Fixed and opening skylights for flat roofs, extensions and single-storey buildings. We install kerb-mounted and deck-mounted units with full waterproofing integration.
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Roof Window Replacement
Old, leaking or misted roof windows removed and replaced with modern, energy-efficient units. We upgrade the flashing at the same time to ensure a lasting, watertight fit.
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Roof Ventilation
Tile vents, ridge vents and mechanical ventilation solutions to maintain correct airflow in your roof space. Proper ventilation prevents condensation, timber rot and mould growth.
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Velux Trained Installers
Our team is experienced in the full Velux product range, from centre-pivot windows to top-hung units and flat roof skylights. We follow manufacturer installation guidelines to ensure your warranty is valid.
Fully Integrated Installations
A roof window is only as good as its integration with the surrounding roof. We install manufacturer-approved flashing kits and integrate every window seamlessly with the existing tiles or slates to prevent leaks.
Structural & Building Regs
We handle the structural aspects of the installation including trimming rafters, fitting headers and ensuring compliance with building regulations for fire escape, ventilation and thermal performance.
Guaranteed Workmanship
All roof window and skylight installations are backed by our written workmanship guarantee. Manufacturer product warranties — typically 10 to 20 years — apply in addition to our own guarantee.
Our Roof Windows & Skylights Work
What Our Customers Say
Verified Google ReviewsJane S.
Kent
They were very friendly, professional and polite and left the site immaculate at the end of the day. I would thoroughly recommend them to others. The work was carried out to a very high standard.
Peter B.
East Sussex
Excellent work, highly recommended! Very knowledgeable, by far the best roofing company we have ever used and super nice guys.
Sarah M.
Surrey
Radiant Roofing completed our roof repair quickly and professionally. Great communication throughout and a fantastic result.
Frequently Asked Questions
A standard Velux window supply and installation typically costs between £800 and £1,800 depending on the size of the window, the type of roof covering and whether any structural work is needed. Larger windows, electric operation and flat roof skylights cost more. We provide free, written quotations covering supply, installation and all associated roofing work.
A single Velux window installation typically takes one day, including cutting the opening, fitting the window, installing the flashing kit and tiling around it. Multiple windows or more complex installations may take two days. We always confirm the expected timeline before work begins.
In most cases, roof windows can be installed under permitted development without planning permission, provided the window does not protrude more than 150mm above the roof plane. Properties in conservation areas, listed buildings or those with specific planning conditions may require approval. We can advise on this during your free consultation.
Yes, roof windows can be retrofitted into most existing pitched roofs. We cut the opening, trim or reinforce the surrounding rafters as needed, fit the window with the correct flashing kit and re-tile around it. The result is a factory-finished installation that looks like it has always been there.
We install roof windows and skylights across the whole of Kent, Sussex and Surrey, including Tunbridge Wells, Sevenoaks, Tonbridge, Maidstone, Crawley, East Grinstead, Haywards Heath, Reigate and the surrounding areas. If you are unsure whether we cover your location, give us a call.
Ready to Get Started?
Whether it's a repair, replacement, or a brand new roof — get in touch today for a free, no-obligation quote.
Contact Us!
Get in touch with us!
Looking for a free quote? Just fill in the form below, and we'll take care of the rest!
Contact Information:
Mobile (24/7): 07753 165 005
Landline (Office Hours): 01892 356 967
Email: contact@radiantroofing.co.uk
Head Office:
Address:
Alpha House
Crowborough Hill
Crowborough
TN6 2EG
Opening Hours:
Monday to Friday: 7:30 am – 6:00 pm
Saturday: 7:30 am – 12:00 pm
Sunday: Closed (mobile still available)
Our Mobile and Email is available 24/7