Skylights & rooflights in Conisbrough
Conisbrough runs along a ridge above the Don, and its brick terraces, council-built semis and newer cul-de-sacs face the valley from different heights. Skylights, rooflights and lanterns are fitted and replaced across the town, in units whose worn parts can be exchanged later while the roof around them stays as it is.
What Conisbrough roofs ask of a skylight
The town is split between the valley floor and the higher ground above, and the houses in between follow the slope. A roof on the ridge sees weather that a roof in the river bottom never meets, so the same unit does not suit both.
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Open ground on the ridge
Where the streets reach the higher ground, the wind has a long run at the roofs. A roof window on a slope that faces open country needs a flashing that sheds driving rain, and we choose the glazing bars and seals with that exposure in mind.
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Terraces with built-up backs
The older brick terraces have been extended at the rear since they were built, and the back kitchen often has a lean-to or flat roof tight against the neighbour's wall. The light into those rooms has to come from above, and the covering and joists need checking before an opening is marked.
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Ground that has moved
In a former mining area the ground and the buildings on it may have settled, so rooflines are not always straight. We sight along the slope before a frame goes in, because a roof that has dipped needs its opening shimmed level, otherwise the opening sash catches in its frame.
Conisbrough's houses, from the old centre outwards
The older streets near the centre are brick terraces and short rows, built close to the road with small yards behind. The roofs are slate or concrete tile, laid at a modest pitch, and the loft rooms are modest too. The window is made to suit the gap between the existing rafters, and a pair of narrower units often gives more light than one wide one.
Around the town are streets of semi-detached houses laid out between the wars and after, with hipped or gabled roofs in tile and a good deal of space in the loft. A number have been extended at the back with a single-storey kitchen or dining room, and the flat roofs over those extensions can take a lantern or flat rooflight.
Newer estates on the edges have modern trussed roofs, built from engineered timbers that cannot be cut like old rafters. A wide opening through engineered trusses is structural work, designed and approved before anyone picks up a saw. The Conanby end of the town has its own mix of housing, and we survey it as we do any other part, by what the roof itself shows us.
The Don valley runs along the town's northern side, and the geography matters for light as much as for weather. A rear kitchen facing north into a steep bank gets little sun, and a rooflight above the worktop makes a bigger difference to it than a larger window ever could. Bungalows are also part of the mix, and a roof window in a bungalow loft room can serve as the escape opening as long as the sill is within the allowed height.
Walk the lanes between the older streets and the newer ones and the pattern of the roofs is easy to read. The terraces sit close to the pavement with little garden, so a rooflight there has to bring light into rooms that the street has crowded. The semis have longer plots and more roof space to work with, which is why the rear extensions are where most of the design thought goes: the position of the opening, the height of any lantern, and the way the new upstand meets the old covering.
Take one of the semis with a kitchen extension built out at the back. The covering, usually felt or a single-ply membrane, is what ages first, and the edge where it meets the upstand of a lantern or flat rooflight is the first place we look. The glazing is a sealed unit that would be replaced from the roof side, while blinds and vent controls can be changed from the room below. At survey we check the falls, so water runs away from the upstand, and the joists under the covering. We also see whether an old opening can be reused, which leaves the structure alone, and the quote says so. If the old opening is out of square, we tell you before the day, not during it.
Rooflights for Conisbrough terraces, semis and extensions
Along these streets the jobs fall into a pattern: windows into terrace and semi lofts, lanterns and flat rooflights above the back extension, and new glazing where an old light has given up. Each quote sets out the ageing parts and the route for changing each, with the long run kept in view when you choose.
Roof WindowsFor the loft rooms of the brick terraces by the old centre, with the slate or tile lapped over the flashing.
Flat Roof RooflightsFor the single-storey kitchen extensions behind semis, where a flat rooflight brings light down onto a worktop without rising above the roofline.
Roof LanternsOver the dining end of a larger rear extension, where a wall window never reaches the middle of the floor.
Sun TunnelsFor landings and bathrooms deep in a semi, where a tube from the roof carries daylight into a room with no outside wall.
Misted & Failed Rooflight UnitsFor lights fitted when an extension was new and now fogged inside the glass. The first check is whether the sealed pane alone can be replaced.
Electric & Opening RooflightsFor kitchens and bathrooms where a rooflight sits out of reach and a switch or remote sash is easier than a pole.
Permission and protected areas in Conisbrough
City of Doncaster Council
Applications in Conisbrough are decided by Doncaster. Whether you need consent for a window in the slope, or a low flat unit, depends on the permitted development conditions, which are the same all over England. We have put them in one place, the planning and Building Regulations guide, and link to it so that this page can stick to Conisbrough.
A Conisbrough conservation area appears in the council's records, close to the centre. A new rooflight on the street side of a house inside one is judged differently, and a slim unit set level with the slope is the sensible place to start. We look your address up during the survey, and if you are outside it the ordinary rules apply, which we say plainly.
Height is what trips up lanterns. One that stands well clear of the extension roof can move outside permitted development, so we give you the finished height on the drawing before you decide. Flats are a separate case: permitted development stops at houses, so a converted building needs planning permission for a rooflight, and the freeholder's agreement besides.
Conservation areas
The council's records place a conservation area in the old part of Conisbrough. Your house is set against its map during the survey, with extra controls asked about, before we settle on a unit.
Building Regulations also cover the structure. Every new opening is cut through rafters or joists, which makes it structural work needing approval, so the frame is never fixed until the timbers around it are understood. A modern trussed roof takes longer, because an engineer has to design the opening before a single member is cut.
Beyond Conisbrough, along the Don
Conisbrough sits among a close group of former mining and industrial towns along the Don, and none of them is out of range. Warmsworth is 2.5 miles north-east and Sprotbrough 2.8 miles in the same direction, both leafy suburbs on the higher ground with larger semis and detached houses. Mexborough is 2.6 miles west, a brick town of terraces and shops, and Swinton is 3.8 miles west, with similar streets running into housing from the later twentieth century. Thrybergh lies 3.3 miles to the south-west, Maltby 4.2 miles south, and Bolton upon Dearne 4.3 miles north-west, each with its own mix of brick terraces and estates. Cusworth, 4.5 miles north-east, is part of the Doncaster fringe. Each of these is written up separately.
Conisbrough
A Conisbrough skylight, from first visit to later years
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First visit
What we look for on a Conisbrough ridge street
Conisbrough is 15 road miles north-east of Sheffield, about 27 minutes in the van, so a visit is simple to fit round your week. Indoors we start with the room that wants the light, then go up. A terrace gets a look at the slate or tile, how the back offshoot meets the main slope and where the rafters fall. A rear extension gets a look at its covering, the direction its joists run and the side of the house the sun comes from.
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Fitting day
Joining new work to an old covering
Slate and tile near the opening are lifted and relaid, never broken out and bagged. On an extension the new kerb goes up level and insulated, with the old covering lapped to it. The 10-year guarantee stands behind that kerb and the flashing, and the Building Control notification is one more step in the same job, which we handle.
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First winter
The first cold months with a new unit
The first cold season shows what a rooflight is made of. After a night of heavy rain, look at the reveals. Open the sash fully and close it again. Early in the morning, see whether the inner face of the glass has fogged. That is humid air from the kitchen, not a fault, and cracking the sash open normally clears it. Kitchens facing the valley bank show it soonest.
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Year 14
Seals, glass and motors on the open ridge
Around the fourteenth year the roofs on the exposed ridge will have taken a harder beating on their seals than those down in the sheltered streets. The life plan from the quote lists every part that wears, glass unit and any motor included, with the route for changing each. The change is made inside the room or up on the slope, and the covering round the frame stays where it is.
Conisbrough rooflight questions, answered
Is my Conisbrough house inside a conservation area?
Only if it is close to the old centre. The council holds the map, and the survey is when your address is checked. If you are inside, we price a slim flush unit alongside the standard one so you can compare.
Can you add a lantern to the flat roof of my extension?
Usually. The opening is framed by trimming the joists, a kerb is formed and insulated, and the covering is lapped up to it. At survey we work out the span of the joists and whether the existing roof is sound enough to be joined.
My house is on the ridge and takes a lot of wind. Does that change the rooflight?
It changes the flashing and the seals. We look at which way the roof faces and how open the ground is, then choose the frame and glazing bars to keep driving rain out. A sheltered street can take a lighter specification.
Could a roof window in a Conisbrough bungalow loft serve as the escape route?
It can, if the opening clears the minimum size and the sill is low enough under the regulations. Both are measured at survey before we promise a size.
Do you work in the places around Conisbrough too?
Yes. Mexborough, Warmsworth, Sprotbrough, Thrybergh, Swinton and Maltby can all be reached, with the villages beyond, and their pages are linked above.
Can two narrow roof windows replace one wide one in a terrace loft?
Often they can. Rafters in older rows sit at set spacings, and a pair of narrower units can each fit between two rafters, so none is cut. Together they can pass as much light as one wide unit, and each is easier to handle on a modest slope. The drawbacks are two sets of flashing and a different price, which the quote shows. Whether a wide unit would need trimmed timbers is something we check at survey, since that often tips the choice.