A skylight installation that leaks is almost always a flashing or sealing problem, not a product problem. The skylight unit itself rarely fails, what fails is the integration between the unit and the roof covering around it. Poorly fitted flashing, inadequate upstand construction on flat roofs, and perimeter seals applied without correct surface preparation are the most common causes of skylight leaks in UK properties. At EBT Build, every skylight installation is treated as a roofing project first, correct flashing, watertight upstand construction, and full perimeter sealing are completed on every job before internal finishing begins.
We install and replace skylights across pitched roofs, flat roofs, loft conversions, and extensions throughout Islington, Camden, Hackney, Haringey, and surrounding North London areas. Every installation is completed by our own roofing team with no subcontracting, and every project is priced in writing after a free site survey.
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Consistently rated for workmanship, reliability, and project management.
Delivering home refurbishment and roofing projects with controlled processes, certified trades, and accountable project management.
Every skylight project is delivered as a fully managed service. We take responsibility for the complete scope of work, ensuring correct preparation, fitting, sealing, and finishing.
Our focus is not just appearance but proper flashing, waterproofing, and roof integration so the skylight performs reliably in all weather conditions. All work aligns with guidance from the British Standards Institution.
Keeping the surrounding roof area clean is important before installation, which is why professional roof cleaning may be recommended to remove moss and debris.
Our service covers everything required to deliver a fully finished and functional skylight. We begin with a site survey, prepare the roof opening, and complete installation using approved methods.
Sealing, flashing, and internal finishing are handled correctly. The result is improved daylight without compromising roof performance or weather resistance. During skylight installation, drainage around the roof edge should also be checked, and in some cases guttering installation or adjustments may be required.
We install VELUX roof windows on pitched roofs across North London including fixed, centre pivot, and top hung opening configurations. Every VELUX installation includes correct flashing kit selection for the roof covering type, precise opening preparation, and full weatherproof sealing to manufacturer specification to protect the product warranty.
We install flat roof skylights including walk on glass units, fixed flat roof domes, and opening flat roof windows on single storey extensions, garage conversions, and flat roof structures. Flat roof skylight installations require specialist upstand construction and flashing to ensure watertight performance and we carry out all associated roof preparation as part of the installation.
We install roof lanterns on flat roof extensions and orangeries across UK where maximum natural light and a feature roof element are required. Roof lantern installations involve structural preparation of the roof opening, upstand construction, and full perimeter sealing and flashing before the lantern frame and glazing are fitted.
We install sun tunnels on pitched and flat roofs where a full skylight opening is not practical but additional natural light is required in a room below. Sun tunnels are fitted with a roof dome, insulated flexible or rigid tube, and ceiling diffuser and can typically be installed in a single day with minimal disruption to the surrounding roof covering.
We carry out like for like skylight replacements and unit upgrades on properties where the existing skylight has failed, is leaking persistently, or has reached the end of its serviceable life. Every replacement includes a full condition assessment of the surrounding roof structure and flashing before the new unit is fitted to ensure the replacement performs correctly from day one.
We carry out skylight repairs including flashing replacement, resealing of failed perimeter seals, replacement of broken or misted glazing units, and repair of damaged frames on existing skylights across North London. A full condition assessment is carried out before any repair is quoted to confirm whether repair or full replacement is the more cost effective option.
A skylight installed without correct flashing, inadequate sealing, or poor structural preparation will leak. In most cases the leak does not appear immediately — it develops over months as water tracks through the roof structure and shows up as damp patches on the ceiling below. By that point the damage extends beyond the skylight itself and the repair cost is significantly higher than the original installation. At EBT Build, every skylight installation is treated as a roofing project first, correct flashing, correct upstand construction, and correct perimeter sealing are non-negotiable on every job.
We install and replace skylights across pitched roofs, flat roofs, loft conversions, and extensions throughout Islington, Angel N1,Camden, Hackney, Haringey, and surrounding North London areas. Every installation is completed by our own roofing team with no subcontracting, and every project is priced in writing after a free site survey before any work begins. Proper thermal performance is also important around roof openings, so many homeowners combine skylight work with roof insulation upgrades.
We carry out skylight installation and replacement across all common roof types and property configurations throughout North London. Every installation is assessed on site to confirm the roof structure, pitch, and waterproofing requirements before any unit is specified or ordered.
We install skylights on pitched roofs across Victorian terraces, semi-detached houses, and detached properties throughout Islington, Camden, Hackney, and Haringey. Pitched roof installations include correct flashing kit selection for the existing roof covering, precise rafter preparation, and full weatherproof sealing before the unit is fitted.
We install flat roof skylights and roof lanterns on single storey extensions, kitchen extensions, and flat roof structures across North London. Flat roof installations require upstand construction and specialist perimeter flashing to achieve watertight performance and we carry out all associated roof preparation as part of every installation.
We install VELUX roof windows and fixed skylights as part of loft conversion projects across North London where natural light and ventilation are required in the new habitable space. All loft conversion skylight installations are coordinated with the structural roof works and comply with building regulations requirements for means of escape where applicable.
We install roof lanterns and flat roof skylights on single storey extensions and orangeries across North London where a feature glazed roof element is required. Installations are planned to integrate correctly with the existing roof structure and drainage arrangement before any unit is specified.
We carry out skylight installation and replacement on commercial properties including offices, retail units, and light industrial premises Commercial installations are assessed for structural requirements, fire safety glazing specifications, and building regulations compliance before any unit is ordered or fitted.
We install skylights on garage conversions and outbuildings across North London where additional natural light is required following conversion to a habitable or working space. Sun tunnels and flat roof domes are commonly specified for garage conversions where the roof structure limits the options for a full skylight opening.
Every project starts with a detailed survey and planning phase. Roof condition, opening size, and installation requirements are confirmed.
Includes:
Site survey, planning, roof inspection, preparation assessment.
Once preparation is complete, installation works are carried out. This includes secure fitting, flashing installation, and sealing.
Includes:
Skylight fitting, Flashing and sealing, Alignment checks
The final stage focuses on quality and accuracy. All seals, joints, and finishes are inspected before handover.
Includes:
Final inspection, Weatherproof checks, Project handover
We visit your property in UK to assess the scope and requirements.
You receive transparent pricing and a clear timeline for your project.
All trades are coordinated and managed under one system.
Snagging is completed and the project is delivered to agreed standards.
EBT Build installs a full range of skylight types for both pitched and flat roofs across the UK. This includes fixed skylights, opening skylights, VELUX roof windows, flat roof domes, sun tunnels, and roof lanterns. The right skylight for your property depends on the roof type, pitch, and how much light and ventilation you need. During our free survey we assess the roof structure and recommend the most suitable unit for your specific situation. All installations are completed by our in-house roofing team with no subcontractors involved.
The cost of skylight installation in the UK typically ranges from £800 to £3,000 per unit depending on the type of skylight, the size of the opening, the roof type, and access requirements. A standard VELUX window on a pitched roof is generally at the lower end of that range. Flat roof skylights and roof lanterns tend to cost more due to the additional structural preparation and specialist flashing required. EBT Build provides fully itemised written quotes after a free site survey so you know exactly what you are paying for before any work begins.
A single skylight installation on a straightforward pitched roof can typically be completed in one day. Flat roof skylight installations or projects involving multiple units may take two to three days depending on the scope of preparation required. If structural work is needed to create or enlarge the roof opening, additional time will be required. EBT Build confirms all timelines in writing after the survey so you can plan accordingly. We work efficiently and keep disruption to a minimum throughout every project.
In most cases planning permission is not required for skylight installation in the UK as it falls under permitted development rights. However, there are exceptions. If your property is a listed building, sits within a conservation area, or if the skylight faces a highway, you may need to apply for planning permission before work can begin. EBT Build checks all relevant planning requirements during the survey phase and advises you on any permissions needed before a single tool comes out. We can also point you in the right direction if a formal application is required.
A properly installed skylight will not cause heat loss or drafts. Modern skylights are manufactured with double or triple glazing and thermally broken frames that meet current UK building regulations for energy efficiency. The key factor is installation quality — poor flashing, inadequate sealing, or incorrect fitting are the most common causes of drafts and heat loss around roof windows. EBT Build installs all skylights to manufacturer specification with full weatherproof sealing and flashing as standard. Where required we also recommend combining skylight installation with roof insulation upgrades for maximum thermal performance.
Skylight replacement is worth considering when the existing unit is more than 20 years old, showing persistent leaks that cannot be resolved through resealing, or when the glazing is single pane and causing significant heat loss. Condensation between glass panes is a clear sign that the sealed unit has failed and replacement is the only effective fix. Cracked or broken frames, warped seals, and difficulty opening or closing an operable skylight are also strong indicators that a full replacement will be more cost effective than ongoing repairs. EBT Build carries out a full condition assessment during the survey and gives an honest recommendation on whether repair or replacement is the right option for your property.
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