Roof windows, skylights and dormers bring light into loft rooms, extensions and dark landings. This page covers Velux and roof-light installation in Llandudno — what it costs, what is involved, and the coastal and conservation factors that affect the job here.
Velux Roof Windows
A Velux (or equivalent) roof window is the most cost-effective way to bring daylight into a loft room or landing. On a standard pitched Llandudno roof, a single window installed — including the correctly matched flashing kit and internal making-good — runs £1,200–£3,000. The flashing kit matters: there is a different kit for slate and for profiled tile, and using the right one is what stops a roof window leaking. On the reclaimed-slate roofs common here, we use the slate flashing kit and dress it properly.
Flat-Roof Skylights
On flat-roofed extensions we fit flat-glass or lantern skylights, which transform a dark kitchen or rear room. These are installed into a timber upstand and integrated with the flat-roof covering — GRP or EPDM — so the waterproofing is continuous. Cost depends on size and the type of glazing, from around £900 for a modest fixed rooflight to several thousand for a large lantern.
Key fact: Roof windows must be installed with the manufacturer's matched flashing kit for the specific roof covering — slate or tile — to maintain the weathertight seal; mismatched or improvised flashing is a leading cause of roof-window leaks. Source: Velux installation standards / NFRC guidance
Dormer Windows and Loft Rooms
Where you need headroom as well as light — turning a loft into a usable room — a dormer is the answer. A dormer projects from the roof slope to create full-height space and a vertical window. This is a bigger job involving structural and often planning considerations, and on Llandudno's conservation-area properties the design and materials will need to satisfy Conwy County Borough Council. We handle the roofing, weatherproofing and leadwork on dormer projects and can advise on where planning input is needed.
The Conservation and Coastal Factors
Two local points shape roof-window work in Llandudno. First, conservation: on visible front slopes within the conservation area, Conwy County Borough Council may restrict roof windows or require conservation-style (flush, black-framed) units — we advise before you order. Second, exposure: seafront and elevated properties take driving rain, so correct flashing and, on very exposed roofs, a slightly higher-spec unit are worth specifying to avoid wind-driven leaks.