The Velux Cabrio roof balcony turns a standard roof window opening into a full balcony — bringing outdoor space and panoramic views to your loft room. ProMax Roofing & Building installs Velux Cabrio balcony systems across Leeds, West Yorkshire and surrounding areas. Director-led, no subcontractors, fully insured. Call 07347 627044 for a free site survey.
Velux Cabrio Balcony Installation Leeds — Loft Balcony Specialists
What is the Velux Cabrio Balcony System?
The Velux Cabrio is a unique roof window that converts in seconds into a full balcony unit. The lower sash folds down to form a balcony floor, while the upper sash opens outward as a rain canopy. The result is a genuine outdoor balcony experience without permanent structural changes — no planning permission required in most cases.
Cabrio systems are available in two sizes, fitting into standard rafter openings with minimal structural modification. They are particularly popular for loft bedrooms and home offices in Leeds — properties where an external balcony would require significant planning and structural work, but where the owner wants that connection to the outdoors. The thermal performance matches Velux’s standard range, so energy efficiency is not compromised.
ProMax Roofing installs Velux Cabrio systems across Leeds and West Yorkshire. Paul and Lee have extensive experience with loft conversion work and understand the structural, weatherproofing, and aesthetic requirements that make these installations successful. Every Cabrio installation uses genuine Velux flashing kits and is carried out to manufacturer specification, protecting your guarantee.

Cabrio Installation Process & Planning Considerations
Installing a Velux Cabrio in Leeds follows a similar process to a standard Velux window installation, with additional structural considerations for the balcony load.
We begin with a site survey assessing rafter spacing, pitch, and loft floor structure. The Cabrio requires a minimum 35° roof pitch and specific rafter centres — we confirm compatibility before any work begins. Where rafter trimming is needed, we install correctly specified structural members.
The frame is installed with the appropriate Velux Cabrio flashing kit. Unlike standard windows, the Cabrio requires additional checking of the lower frame seal and balcony floor drainage detail to prevent water ingress when the unit is open in rain. We test every unit through its full open/close cycle before leaving site.
Internal lining, insulation collar, and finishing plasterboard are fitted as standard. We also install standard Velux roof windows and flat-roof skylights — contact our Leeds team to discuss the right option for your loft. Serving Leeds, Bradford, Wakefield, and Harrogate.

