Roof windows transform dark loft spaces into bright, ventilated rooms. We supply and install the full range of Velux roof windows, sun tunnels and skylights — from straightforward replacements to new Serving Isleworth and all surrounding areas in Hounslow.
Roof windows transform dark loft spaces into bright, ventilated rooms. We supply and install the full range of Velux roof windows, sun tunnels and skylights — from straightforward replacements to new installations in existing roofs. Every installation uses the manufacturer-approved flashing kit for your specific roof covering.
The correct roof window depends on roof pitch, tile type, and what you need the window to do. Centre-pivot windows suit standard pitches. Top-hung windows give more headroom. Conservation-style flush-fit windows are required in some Isleworth conservation areas.
The roof window itself rarely leaks — it is the flashing around it that fails. We use only Velux-approved flashing kits matched to your specific tile profile. Generic flashings and site-made solutions are the primary cause of roof window leaks in Isleworth.
If you are converting your loft, Building Regulations require minimum window areas for natural light and ventilation, plus at least one opening window for fire escape. We work with your builder to position and size windows correctly for compliance.
Old Isleworth near the Thames has Georgian and Victorian riverside properties. 1930s semis along Twickenham Road. Post-war estates near Osterley. The conservation area around Church Street contains listed buildings with strict material requirements. For velux & roof windows work in Isleworth, this housing profile means we commonly encounter Thames riverside damp penetration on Old Isleworth period properties — ground-floor flooding drives moisture upward into roof timbers. Lead flashing failure on Church Street conservation properties. C
The streets of Isleworth — including Church Street Isleworth, Twickenham Road, London Road Isleworth — have roofing characteristics that reflect their construction era and the specific exposure conditions of Hounslow. Hounslow's proximity to the Thames creates localised humidity issues, particularly in Chiswick, Brentford and Isleworth where riverside properties face accelerated moss growth and lead oxidation. The
Velux & Roof Windows in Isleworth: £800–£3,000 depending on scope, access and materials. Free, written, no-obligation quotes. Call 0203 302 2547.
Free quotes, no call-out fees, same-day emergency service.
📞 Call Now: 0203 302 2547"Flat roof replacement on our kitchen extension — called on a weekday and they were out within days. Professional, tidy, and the price was exactly as quoted. Highly recommend."
"Slate repair matching original victorian tiles — called on a weekday and they were out within days. Professional, tidy, and the price was exactly as quoted. Highly recommend."
"Flat roof conversion from felt to grp fibreglass — called on a weekday and they were out within days. Professional, tidy, and the price was exactly as quoted. Highly recommend."
A standard centre-pivot Velux window supplied and installed in Isleworth costs £800–£1,500 depending on size. Larger or specialist windows including balcony-style and conservation models run £1,500–£3,000. Replacement of an existing unit is typically £600–£1,000.
Yes — we cut into the existing roof, install the window with correct structural support, and weatherproof with the appropriate flashing kit. Planning permission is not usually required unless you are in a conservation area.
The three most common causes are: incorrect or deteriorated flashing, condensation mistaken for a leak, and failed window seals. We diagnose the actual cause before quoting — it is often a straightforward flashing repair rather than a window replacement.
Minimal — clean the glass, oil the hinges annually, and check the flashing seals every 2-3 years. Velux windows typically last 20-30 years before the seals and mechanisms need attention.
Yes — old skylights are often single-glazed, poorly sealed and difficult to open. A modern Velux replacement gives you double glazing, proper ventilation, and a reliable weatherproof seal.
Yes — sun tunnels bring natural light to internal rooms that cannot have a conventional window. They are ideal for bathrooms, hallways and stairwells in Isleworth properties.
Window size depends on room floor area — Building Regulations specify minimum glazing areas for habitable rooms. We calculate the correct size based on your room dimensions and roof pitch.
Hounslow's roofing story is shaped by two forces: the Thames and Heathrow. Riverside properties in Chiswick, Brentford and Isleworth have roofing challenges driven by humidity, flood risk and the specific material requirements of their conservation areas. Properties further west in Hounslow, Heston and Feltham face the unique environmental stress of the Heathrow flight path — sustained low-frequency vibration from aircraft on approach that gradually loosens mortar joints and ridge fixings.
The Thames corridor through Hounslow creates a microclimate that makes seasonal roof maintenance essential. Winter humidity promotes moss and algae growth that is noticeably worse on north-facing pitches near the river than on equivalent roofs just a mile inland. Autumn gutter clearance is critical — the mature plane trees along Chiswick High Road, Strand-on-the-Green and Brentford High Street produce enormous volumes of leaf debris that can block an entire gutter run in a single week.
Chiswick and Brentford have seen significant property price growth, with many Victorian and Edwardian houses now valued above £1 million. In conservation areas covering much of Chiswick and Old Isleworth, roofing materials must match originals — a requirement that adds 30-60% to costs but protects both the streetscape and your property's premium value.
Every job follows our standard quality process: free inspection and assessment, written quote with full scope of work, professional installation by our own team using specified materials, post-completion inspection with photographic record, and a written guarantee. This process applies to every job regardless of size — a £200 repair gets the same professional approach as a £15,000 re-roof.
We specify materials based on the specific conditions of your property — its age, construction type, exposure and the performance requirements of the job. We never use the cheapest available option as default — we use the right option for your situation and explain why. All materials are sourced from established manufacturers with proven track records.
All work carries our written workmanship guarantee. The guarantee period depends on the scope of work — from 2 years on minor repairs to 10 years on full installations. Guarantees are transferable if you sell the property. Materials carry the manufacturer's own guarantee in addition to our workmanship cover.
No call-out fees. No obligation. Just an honest quote from a local Isleworth roofer who turns up when they say they will.
0203 302 2547 📞 Call Now: 0203 302 2547