Skylight Installation London
Skylight and rooflight installation for residential and commercial properties across London. Crestane Construction can coordinate new roof openings, rooflights, flat-roof skylights, pitched-roof windows, replacement units and associated roofing, insulation, flashing and internal making-good works.
Discuss Your Project Explore Skylight ServicesPlanning a new rooflight or replacing an existing skylight?
Tell us about the property, roof type, proposed size and location, and whether the skylight forms part of a wider refurbishment, extension or roofing project.
Skylights coordinated with the roof and internal finishes
A rooflight installation normally involves more than fitting the glazed unit itself.
Discuss a skylight or rooflight project
Provide the main project information below.
Bring natural light into roofs, extensions and internal spaces
Skylights and rooflights can be used to bring daylight into kitchens, extensions, loft spaces, stairwells, internal rooms and commercial areas where conventional wall glazing is limited.
Crestane Construction can coordinate suitable rooflight installations across London as stand-alone roofing works or as part of wider refurbishment, extension and construction projects.
The exact installation depends on the roof build-up, opening size, selected rooflight, structural requirements, waterproofing details and internal finishes.
For larger works, the skylight package can be coordinated with roofing, insulation, ceilings, plastering, decoration and other trades within the same project.
Rooflight installation for a range of London properties
Suitable packages can include new openings, replacement units, roofing integration and associated finishes.
Flat Roof Skylights
New or replacement rooflights integrated into suitable flat-roof systems.
Pitched Roof Windows
Roof windows and skylights installed into suitable pitched-roof constructions.
Replacement Skylights
Replacement of older, damaged or unsuitable rooflights where the surrounding roof condition allows.
Extension Rooflights
Rooflights incorporated into suitable rear, side-return and other extension projects.
Large Rooflights
Larger roof glazing and statement rooflight installations where suitable for the design and structure.
Roof Opening Works
Opening formation and surrounding construction coordinated where required by the project.
Flashing & Weathering
Suitable flashing, kerbs and weathering details integrated with the surrounding roof system.
Internal Reveals
Internal lining, plastering and finishing around the new rooflight can be included.
Commercial Rooflights
Selected rooflight replacement and installation works within commercial refurbishment projects.
A good rooflight installation depends on the surrounding roof
The rooflight itself is only one component. The opening, kerb or frame, roof covering, insulation, vapour control, flashing and internal finishes all need to work together.
Crestane can coordinate the surrounding building works with the selected unit and the existing or proposed roof build-up.
Where the roof requires wider repair or replacement, the skylight can be integrated into the broader roofing package rather than treated as an isolated item.
Rooflights for flat roofs and modern extensions
Flat-roof skylights are commonly used over rear extensions, kitchens, dining areas, hallways and other spaces where more overhead daylight is wanted.
The installation may involve a new kerb or upstand, waterproofing integration, insulation and internal lining around the opening.
Where the existing flat roof is approaching the end of its service life, it can be more practical to coordinate the rooflight with wider flat-roof works rather than disturb and reinstate a failing roof covering.
See our Flat Roofing London service for wider flat-roof projects.
Roof windows for lofts, bedrooms and upper-floor spaces
Pitched-roof windows can bring natural light and ventilation into lofts, bedrooms, stairwells and converted roof spaces.
The surrounding roof covering, rafters, insulation and internal finishes all influence how the installation is planned.
Where structural trimming or other alterations are required around the opening, the relevant details should be established before the roof is cut or permanently altered.
Suitable pitched-roof window works can also be incorporated into broader roofing, loft or refurbishment packages.
What can be included around the rooflight?
The exact package depends on the product, roof type and existing construction.
Review the proposed location, roof type, access and available product information.
Form or adjust the roof opening where included and appropriate for the project.
Coordinate suitable surrounding structural works where required by the design.
Fit the selected rooflight, skylight or roof window to the agreed scope.
Integrate suitable weathering details with the surrounding roof covering.
Coordinate insulation and surrounding build-up where relevant to the project.
Complete suitable reveals, plasterboard and plastering around the opening.
Internal finishing can be included where it forms part of the agreed works.
The roof type and opening details matter
A rooflight should be selected and installed around the actual roof construction, product details and project requirements rather than treated as a generic opening.
Product Information
Manufacturer details, dimensions and installation requirements help define the opening and surrounding build-up.
Roof Structure
The existing rafters, joists or other roof structure can influence the opening and any required trimming.
Approvals
Planning, Building Regulations or other project requirements may apply depending on the property and proposed works.
Skylights within wider property projects
Rooflights are often installed as part of kitchen extensions, full house refurbishments, loft works and commercial fit-outs rather than as a stand-alone job.
Coordinating the skylight with the wider build can simplify sequencing between roofing, structural work, insulation, ceilings, electrical work and finishes.
Crestane can include suitable rooflight packages within broader residential and commercial projects where the overall scope is appropriate.
For larger residential works, see House Extensions London and House Refurbishment London.
What affects skylight installation cost in London?
The total price depends on the rooflight, roof type, access and amount of surrounding construction required.
From rooflight enquiry to finished installation
The exact sequence varies, but suitable skylight projects can typically follow these stages.
Send Details
Provide the address, roof photographs, proposed location, dimensions and product information if already selected.
Review Scope
Review roof type, access, condition and any opening or structural work required.
Price the Works
Develop the price around the agreed rooflight, roofing works, access and finishes.
Prepare Roof
Coordinate safe access, protection and opening preparation where required.
Install & Weather
Install the rooflight and integrate suitable flashing or waterproofing with the surrounding roof.
Make Good
Complete suitable internal lining, plastering and finishing works included in the package.
Where skylights and rooflights are commonly used
What should you send for a skylight quotation?
The more information available, the easier it is to understand the rooflight package and identify any surrounding works.
Project Address
Send the London property address or postcode.
Roof Photographs
Provide clear internal and external photographs of the proposed rooflight area.
Roof Type
Tell us whether the roof is flat, pitched or another construction if known.
Approximate Size
Provide the proposed rooflight dimensions or product details where available.
New or Replacement
Confirm whether a new opening is needed or an existing skylight is being replaced.
Wider Works
Tell us if the rooflight forms part of roofing, an extension or a full refurbishment.
Related Crestane construction services
Rooflights within larger refurbishment and construction projects
Skylight installation across Greater London
Suitable skylight, rooflight and associated roofing projects can be considered across Greater London depending on scope, access and programme.
Frequently asked questions
Do you install skylights in London?
Yes. Crestane can consider suitable new and replacement skylight and rooflight projects across Greater London.
Do you install flat roof skylights?
Yes. Suitable flat-roof rooflights can be installed as part of new roofing, replacement roofing, extensions or stand-alone improvement works.
Do you install roof windows into pitched roofs?
Yes. Suitable pitched-roof window installations can be considered, subject to the roof construction, access and project scope.
Can you replace an existing skylight?
Yes. Existing rooflights can be assessed for replacement where the opening, surrounding roof condition and selected replacement unit are suitable.
Can you create a completely new roof opening?
Suitable projects can include forming a new roof opening. The surrounding roof structure and any required trimming should be considered before the opening is created.
Can you install a skylight as part of an extension?
Yes. Skylights are commonly incorporated into rear and side-return extensions and can be coordinated with the wider extension programme.
Can you do the roofing around the skylight?
Yes. Suitable flashing, waterproofing and surrounding roofing works can be included within the agreed package.
Can you make good inside after installation?
Yes. Internal lining, plastering, decoration and other suitable finishing works can be included where agreed.
Do I need scaffolding?
That depends on roof height, access, roof type and the installation method. Some projects require scaffold or other safe access arrangements while others may not.
Can you install large rooflights?
Suitable larger rooflights and roof glazing can be considered where product information, structural details, access and lifting requirements are appropriate for the project.
Do skylights need planning permission?
Planning requirements depend on the property, location and proposed works. Some roof alterations may be permitted while others can require an application or additional restrictions, so the specific property should be checked before work proceeds.
Do skylights need Building Regulations approval?
Building Regulations requirements can apply to roof alterations, structural changes, insulation and glazing depending on the project. The appropriate route should be established for the individual works.
How much does skylight installation cost in London?
Cost depends on rooflight size and type, whether the opening is new or existing, roof construction, access, structural alterations, flashing, waterproofing and the amount of internal finishing required.
Can you install multiple skylights?
Yes. Suitable projects can include multiple rooflights where the roof, structural arrangement and overall design allow.
Can a skylight be added during a flat roof replacement?
Yes. Coordinating a new rooflight with a wider flat-roof replacement can often make sense because the waterproofing and roof build-up can be planned together.
Can Crestane handle the whole extension or refurbishment?
Yes. Suitable skylight works can be coordinated with wider roofing, extension, refurbishment, building-service and internal-finishing packages.
What should I send for a quotation?
Send the project address, roof photographs, roof type, approximate rooflight size, product information if selected, whether the opening is new or existing, intended start date and details of any wider works.
Which areas of London do you cover?
Suitable projects can be considered throughout Greater London including Central, North, North West, West, South West, South, South East and East London.