Swanmore
A village split by a boundary line: which side is your roof?
Swanmore sits on the edge of the South Downs National Park, and for a rooflight the first job is finding out which authority covers the house
Most of the questions about a rooflight in Swanmore begin with the same one: is the house inside the National Park or outside it? The park boundary runs through the village, which means two neighbouring houses can have different planning authorities. The South Downs National Park Authority handles applications inside the boundary. Addresses outside it fall to Winchester City Council. Neither answer closes the door on a rooflight, but the route to a decision is different, and it is better to know which applies before a unit is chosen and ordered.
That is where we begin on every Swanmore job. We look up the address, see which side of the line it falls on, check whether any conditions or designations apply, and report back. Where an address sits close to the line, we say so and point you to the park authority's own map, which settles it. The authority makes the decision. Our task is to make sure the design you take to it, and the dimensions your builder works to, match what the roof can take.
Cottages with clay tile and old rafters
The older part of Swanmore has brick cottages and a few larger old houses, most of them under clay tile or slate, standing among much later building. Roofs of that age are rarely uniform. Rafters have moved, battens have been renewed here and there, and the ridge is seldom perfectly straight. Cutting an opening for a roof window in such a roof is a job for a carpenter who is allowed time to look at what is underneath before the first tile comes off.
A slim conservation rooflight suits these slopes well. Its frame is thin, a central bar keeps the lines traditional, and the unit sits down into the tiles rather than standing above them. In a cottage bedroom under the tiles it also changes how the room feels, because daylight arrives from the sky rather than from one small gable window. We choose the position from inside as well as outside, so the light lands where the bed and the dressing table will go and the opening falls between rafters where we can.
Old clay tiles need care when they are lifted. Some break, and matching replacements can take time to source. We tell the roofer which tiles around the opening will be disturbed, so that spares are found beforehand and the covering is made good without a gap in the programme.
Bungalows and chalet bungalows on the village roads
Away from the old core the village is a mix of twentieth-century bungalows, chalet houses and later detached homes, most with concrete interlocking tile. A loft conversion in a bungalow depends on pitch and headroom. Each window maker states a lowest pitch for each model and flashing kit, so we measure the slope and choose a window that suits it. Where the pitch is on the shallow side, the choice narrows and the quote says why.
In a chalet bungalow with a bedroom already in the roof, one extra window can change the room considerably. The front slope is the one the street sees, so the windows there are set in a regular pattern that matches the existing dormer or the line of the eaves. Round the back, where the garden is, we can be more generous with size.
Flat roofs behind the extended houses
Plenty of Swanmore houses have been extended backwards over the years. A rear kitchen with garden doors still tends to be dark in the middle, because the light comes from one end only. Over the cooking or dining part of the room, a flat rooflight pulls daylight in through the roof, and on a bigger extension a roof lantern gives height as well as light. The decision between the two is usually about the ceiling: a lantern needs headroom and a taller kerb, while a flat unit sits closer to the deck.
The kerb is built by the carpenter or roofer, to sizes taken from the unit. The common guidance is a kerb that finishes 150mm or higher over the completed roof surface, to the maker's instructions, and the quote gives the exact figure. On a GRP or felt roof, the covering is taken up the upstand ahead of the delivery, so the order of trades matters: roofer, then fitters, then plasterer for the reveals.
Older plastic domes on flat roofs often turn yellow or crack. When the roof is due a new covering, that is the time to replace the dome with a double glazed rooflight on an insulated kerb, because the membrane is open anyway. Doing it afterwards means the roofer must come back.
Lofts, dormers and the stairs underneath
A loft conversion in Swanmore often has to solve the stair before it solves the window. Where the staircase arrives at the top of the house decides where the headroom is, and the headroom decides where a roof window can sit. We look at the stair position and the line of the new floor, then place the window so the sill is a sensible height above the floor and the view from a chair is of sky rather than rafters. A window on a landing or over the stairwell can carry daylight down into a hall that has never had any.
Where a dormer is being added at the back, roof windows on the front slope are the usual companion, and the two should be drawn together. A dormer has a flat or shallow roof of its own, and a small flat rooflight in it is an option that gets overlooked. It is also worth deciding early who supplies the blinds, because a blackout blind for a bedroom window is far easier to fit before the plasterboard goes on.
Opening or fixed, manual or electric
A roof window that opens helps warm, damp air escape from a loft bedroom or bathroom, working alongside the extractor and the heating. Whether it should open by hand, by a pole or by a motor depends on where it sits. A window within reach is simple to operate by hand. One set high above a stair or over a kitchen worktop is easier with an electric actuator and a wall switch, and a rain sensor can close it when the weather turns.
An electric unit needs a cable run, and that is the electrician's job at first fix, with the walls and ceilings still open. We give the position of the unit and the point where the supply should arrive, so the cable is laid once. Adding it afterwards means chasing walls or boxing in a run of conduit.
Winter, summer and the glass itself
A rooflight is a bigger opening than an ordinary wall window, and the room feels its glass in both seasons. In winter, good insulation in the frame and the sealed unit keeps the edge of the room from feeling cold. In summer, a slope that faces south or west takes strong sun for hours, and solar control glazing or an external blind will help. We set out the glazing for each window in the quote, so each choice has its reason set down.
Gardens, hedges and what lands on the glass
Swanmore is a leafy place, with hedgerows and mature trees close to many gardens. Leaves, seed and moss gather on flat glass, so a rooflight in the shade wants wiping down sooner than glass in the open. A self-cleaning coating helps most where rain and sun reach the glass freely, and under heavy tree cover we say plainly how far it will help. If a rooflight is going to be hard to reach, we discuss that at the survey, because the access you have for cleaning is part of the design.
Farmland around the village also means birds, and ordinary roof edges collect debris. A rooflight with a clean upstand and a smooth outer surface is easier to keep clear.
National Park land and the usual questions
Inside the National Park, permitted development rights for a house are reduced. That does not mean a rooflight is out of the question, and it should never be taken as a blanket rule. It means the position needs checking, and some alterations that would not need an application elsewhere may need one here. The park authority's website, southdowns.gov.uk, is where the application route is explained. For addresses outside the boundary, Winchester City Council is the authority, and winchester.gov.uk sets out its process.
Whichever side you are on, the permitted development rules for rooflights are summarised in our planning guide, and a condition on the original consent, or an Article 4 direction, can remove those rights. Listed buildings are handled separately. We look at the planning history of your address and tell you what shows up.
What your builder needs from us
If you are extending or converting a loft, ask your builder when the roof structure will go up. That gives us the window in which to survey, agree the unit with you and send the dimensions across. The quote says which unit is proposed and how it is glazed, carries the manufacturer's quoted wait and notes what your builder must supply. The lead time is laid down by the maker, and the order goes in against the build programme so the roof does not have to wait under a sheet.
Fitting is then arranged around the other trades. The roofer completes the covering around the opening, the electrician fits cabling at first fix if the unit opens electrically, and the plasterer does the reveals last. With Swanmore 12.2 road miles east of Southampton, we can usually look at the roof again if the builder finds something unexpected when the old covering comes off.
The work is carried out to current rules, and where it is notifiable we deal with the Building Control notification. The thermal limits and the rules on replacement units are set out in our Building Regulations guide.
Swanmore is 12.2 road miles from Southampton heading east, near enough for a second look if your builder uncovers a surprise.
