Roof Lanterns & Skylights in Cosham
Glazed roof lanterns and skylights that transform flat-roofed extensions with overhead natural daylight.
Roof Lanterns & Skylights in Cosham
Cosham customers looking for roof lanterns & skylights turn to Aperture Windows & Doors Ltd. A roof lantern sits proud of a flat or low-pitch roof to introduce overhead daylight into a room that wall-mounted windows alone cannot adequately illuminate. The difference in light levels between a room served only by side windows and the same room with a central roof lantern is significant — overhead glazing captures direct sky light across the full day rather than only during the hours when the sun falls on the relevant elevation. Aperture Windows & Doors fits aluminium roof lanterns and flat-roof skylights across Hampshire and West Sussex, from compact single skylights above kitchen extensions to large ridge lanterns over orangery-style rear rooms. All our lanterns use thermally-broken aluminium bars and sealed double-glazed units as standard. Cosham is a suburban district at the northern edge of Portsmouth, lying at the foot of Portsdown Hill. The area has a mix of inter-war semis and later 1960s terraces, and the Northern Quarter regeneration scheme has brought newer housing alongside the established streets. Sitting just north of Portsea Island, Cosham is close enough to the coast for salt-air to be a contributing factor in the degradation of window and door frames over time.
Why Choose Aperture Windows & Doors Ltd in Cosham?
Aperture Windows & Doors Ltd brings the same standard of roof lanterns & skylights to every property in Cosham, Hampshire. Glazed roof lanterns and skylights that transform flat-roofed extensions with overhead natural daylight.
Key Benefits
- ✓Overhead sky light that transforms even north-facing or shadowed extensions
- ✓Dramatically more daylight per square metre than wall-mounted windows at the same floor area
- ✓Thermally-broken aluminium construction with sealed double-glazed units as standard
Roof Lanterns & Skylights in Cosham — FAQ
A rooflight sits flush with the roof surface (or near-flush) and is typically used on pitched roofs. A roof lantern projects above the roof plane on a raised kerb, creating a three-dimensional glazed structure above a flat or near-flat roof. Lanterns introduce significantly more light than a flush rooflight of the same footprint because light enters from the sides of the lantern as well as through the top.
In most cases, yes — provided the flat roof is structurally sound and the ceiling height in the room below allows for the lantern to be installed without impacting headroom. We will assess the structural suitability at your free survey. Any required structural modifications are discussed and costed before work begins.
Roof Lanterns & Skylights in Nearby Areas
Ready for Your Roof Lanterns & Skylights in Cosham?
Book your free no-obligation survey in Cosham today.


