Skylight and rooflight fitting in Penllergaer

Wikipedia classes Penllergaer as a village and a community of the City and County of Swansea, 5.75 miles by road from the city, to the north-west. In 2011 the community and ward counted 2,868 people. St David's, the Church in Wales church, stands on Swansea Road, and Penllergaer Primary School was built in 1881 before moving to its present site in 1976.

The woods carry a story of their own. Penllergaer Woods once formed part of John Dillwyn Llewelyn's Penllergare estate and surrounded his mansion house. During the Second World War the estate was bought by the missionary Rees Howells, and the mansion was offered as a residence to the exiled Emperor Haile Selassie of Ethiopia. The Penllergare Trust, a small charity, supports the upkeep of the estate today.

Penllergaer sits comfortably inside our service radius around Swansea. Nearby places include Gorseinon, Grovesend, Pontlliw and Tircoed, and every one of them lies inside our working area.

Trees are the local fact that most changes a roofing decision. A house with branches over its roof sees more leaf fall, more drip and more shade than one standing in the open, and each of those bears on the choice between a fixed or an opening unit, a flat or a pitched surface, and a glass that cleans itself or one that does not. None of that can be judged from the street, which is a good reason for a free survey before any figure is mentioned.

Before choosing glass for a house near the trees, look at what stands over it. A canopy changes the case for a flat rooflight, which gathers leaves at the kerb, and favours a pitched surface, which tends to shed them more readily than a flat one. Whatever the age of the house, its roof shape decides the family of product. A pitch takes a roof window, a flat roof takes a kerbed rooflight or a lantern, and a room with no roof space above it takes a sun tunnel.

A planning application for a house in Penllergaer goes to City and County of Swansea Council. The first question for any address is whether the house stands on protected land. In Wales, a new rooflight in the roof slope of a house in a conservation area, the Gower AONB, Bannau Brycheiniog National Park or a World Heritage Site needs planning permission. Penllergaer itself is outside the Gower AONB, and our Wales planning guide for skylights sets out the rest.

On other land, a house can sometimes take a rooflight as permitted development, within the limits the guide describes. Flats and maisonettes are left out of those rights entirely, an Article 4 direction can withdraw them from houses, and so can a condition written into the house's first planning permission. A house on a planned estate came through a planning permission, and that paperwork is worth reading for conditions. A listed house needs listed building consent for a rooflight that would change its special character, under the Historic Environment (Wales) Act 2023, and Cadw sets out how consent works.

Where a case is doubtful, put the address to the planning team before any work begins. The council certifies a settled answer through a Lawful Development Certificate.

Building control runs on a separate track. Opening a roof for a new rooflight will generally need approval, and where the work is notifiable we handle the Building Regulations notification with local authority building control or a registered building control approver. A like-for-like window swap is building work as well, although repairing a window is not, and a pane changed inside a frame you keep falls outside the energy rules. A loft that becomes a bedroom brings means-of-escape rules into play, since a roof window may need to double as the way out, and our Building Regulations guide for skylights covers them.

The dimmest rooms in a house are seldom the ones with the best windows. A loft room under a pitch is the plainest case for a roof window. In Wales a new or replacement roof window should have a U-value no worse than 1.4 W/m²K, or a Window Energy Rating of Band B, under Approved Document L (Wales). The same document asks that installed windows and rooflights be fitted with care and be reasonably free of draughts, a good reason to look closely at the flashing and the seal.

Swapping an old window brings ventilation into it as well. Approved Document F (Wales) asks that a replacement leaves the home's ventilation no worse than before, so a window that had trickle vents is replaced by one with vents of equal size or larger.

Drips from branches are heard as well as seen. Some VELUX glazing carries a rain noise reduction option, an option to raise for a bedroom under trees, and the wider choice of double or triple glazing on flat and curved glass rooflights is there for sound as well as energy efficiency.

A landing between two bedrooms, with a loft above it and nothing on the wall, wants a different answer. A sun tunnel puts a dome on the roof and a diffuser in the ceiling, with a lined tube between them. Under trees the dome gathers leaves and drips, so a quick clearing now and then keeps it bright.

Behind the house, a flat-roofed extension takes a flat roof rooflight. Approved Document L (Wales) points a rooflight, a glazed unit raised on a kerb or an upstand, at 2.2 W/m²K. A roof lantern belongs to the same family of jobs, and we confirm with the council how one is treated on a new extension.

Each of these is fitted and replaced by us, and the first step is the same. A free survey comes first, a fixed written quote follows, and once the glass is in you hold our 10-year workmanship guarantee on paper. Call 01792 929062 to arrange it, or book a survey online.