Velux & Rooflight Installation and Restructuring in London
Roof windows and rooflights bring natural light into lofts, landings and top-floor rooms without changing the shape of your roof. When the roof structure needs altering to make room for them, the work must be done carefully.
RCL Contractors installs and restructures Velux and rooflight openings across London and the surrounding areas. We handle the structural opening, the flashing and the weatherproofing so each window is secure and watertight.
Natural Light Without Changing Your Roof Shape
Roof windows can transform a dark loft into a bright, usable room. In many homes, a rooflight conversion needs no extension, which makes it a simpler way to bring a roof space into use where the existing headroom is already good enough.
They are also useful for brightening stairwells and landings, and for adding ventilation and an outlook to rooms below the roof.
Structural Work Done Right
Cutting an opening in a roof affects its structure. Rafters need to be supported with trimmers and the load must be carried safely, especially where several windows or a larger rooflight are planned.
We carry out the structural work correctly and fit flashings and insulation to keep the roof weathertight. We also advise whether the work needs planning permission or Building Regulations approval for your property.
The Delivery Process
01
Assessment & Planning
We look at your roof, discuss where you want light and choose window positions and sizes that work with the structure.
02
Structural Design
We confirm how the roof will be supported around each opening and identify any approvals needed before work begins.
03
Opening & Installation
We form the openings, install trimmers, fit the windows and flashings, and make the roof weathertight.
04
Finishing & Handover
We complete internal linings and finishes, check each window opens and seals properly, and take you through the finished work.
Do You Have Any Questions?
Do I need planning permission for roof windows?
Often not, but it depends on the property, the position of the windows and local rules. Conservation areas and listed buildings may have restrictions. We check this for you.
Can you install a rooflight in an existing roof?
Yes, in most cases. The roof structure must be supported properly around the opening, and we assess this before agreeing the work.
Will a roof window leak?
A correctly installed roof window with proper flashings and waterproofing should not leak. This is why careful installation matters as much as the window itself.
Is a rooflight conversion cheaper than a dormer?
Often it is a simpler project, because it does not extend the roof. However, it only suits lofts that already have enough headroom. We tell you honestly which option fits your loft.
Other Conversion Services
Dormer Loft Conversions
A dormer extends your existing roof outwards, creating extra headroom and usable floor space exactly where a sloping roof would otherwise limit you. It is one of the most practical ways to turn an unused loft into a bedroom, home office or bathroom without moving house.
Mansard Loft Conversions
A mansard conversion reshapes the roof with a steep, near-vertical slope and a flat top, creating a full extra storey with generous headroom. It is a classic London solution that makes the most of the roof volume.