Rooflights and skylights in Somersham

Planning the light for Somersham's 1930s semis, edge-of-village bungalows and newer cul-de-sacs, on the open, flat ground of the Huntingdonshire fen edge.

From Cambridge
About 17 miles
Planning
Huntingdonshire District Council
County
Cambridgeshire
Midday sun
14° winter, 61° summer

Four ways Somersham's flat plots go wrong

  • Full sun tracking across the worktop

    On a new Somersham cul-de-sac with no established trees, plain glass over a south or west kitchen roof can track strong sun across the worktop for most of a summer afternoon.

  • Evening glare over a teenager's desk

    Where a loft room on the newer streets becomes a teenager's bedroom or office, low evening sun can glare hard across the desk and the screen once the west slope catches it.

  • The boxed room stays dark overhead

    In a 1930s semi, the boxed room over the stairs is the darkest room, and a rooflight set too high on the shallow loft lights the ceiling, not the bed.

  • A lantern on the wrong roof entirely

    On an extended Somersham bungalow, putting the lantern over the old hipped roof lights bedrooms that already have their own windows, while the new flat-roofed garden room below stays comparatively dim.

Open sky over the old palace fields

Somersham sits on fen-edge ground so flat that no hillside clips the sun before it reaches the tiles, from the older semis near the church to the newest cul-de-sac on the fringe. Midday height for the sun runs from 14° on the shortest afternoon to 61° on the longest. A south roof takes that whole arc and needs proper glass to match it, while a north slope stays calm and even through every season.

  • North slope: calm even daylight, good for a home office

  • East slope: bright start to the day over the paddocks

  • South slope: the fullest arc of sun; solar control keeps it comfortable

  • West slope: long low glare into a teenager's room

A fen-edge village built around a bishop's palace

Somersham is a large village on the fen edge of Huntingdonshire, set out north-east of St Ives on ground that is flat almost as far as the eye can follow it. For centuries the Bishops of Ely kept a palace here, a country residence with its own deer park, used as a stopping point between the cathedral city and business further south. Little of the palace stands above ground now, but its site, close by the parish church, still marks the older heart of the village, and the paddocks and open fields around that core keep something of the ground the bishops once enclosed.

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That flatness is the first fact that matters for a roof in Somersham. There is no hillside to shade a slope here, no rise of ground to clip the sun before it reaches the tiles, so a rooflight put in almost anywhere in the village sees a wide share of open sky through the day and through the year. Our skylight and rooflight installation across Cambridge and the surrounding villages starts from that fact on every Somersham job, then narrows in on the particular street.

The village grew outward from that fen-edge core in stages that still read clearly in its roofs: pairs of semis built close to the centre before the last war, bungalows laid out along the flatter lanes on the edges soon after, and newer cul-de-sacs added more recently on the outer fringe. Each of the three asks a different question of a rooflight, and the rest of this page works through them one at a time.

The 1930s semis in the older streets

The semis closest to the village centre are typically pairs under a hipped or gabled roof, a bay window at the front, a narrow hallway running back to the kitchen and a boxy spare room or bathroom tucked over the stairs. That upstairs room is usually the darkest in the house, lit by a single small window that looks onto next door's wall or a narrow side passage rather than open ground.

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A loft above one of these semis is shallow enough for a family bedroom or a home office but rarely tall enough for a full storey conversion, and a pair of roof windows set into the rear slope usually does more for a room like this than a single larger opening: two smaller units spread the daylight across the space and give a place to stand up and look out, rather than one bright column falling onto the floor below. Where the room in question is that boxed-in bathroom or the stair landing rather than a full loft room, a smaller unit or a sun tunnel brings usable daylight into a space with no roof void to open up around it, and our guide to skylights for dark rooms sets out how far that daylight actually reaches down through a house like this.

Kitchens on these semis were often extended once, sometimes twice, into the back garden, and the original single-storey rear addition tends to sit under its own flat or very low-pitch roof. A flat roof rooflight set into that lower roof, close to where it meets the older brick, lights the part of the kitchen that stayed dim when the extension first went up, rather than the part already lit by garden doors.

Bungalows on the flatter lanes

Bungalows in Somersham line the quieter lanes towards the edges of the village, built with everything on one floor and a shallower roof pitch than the older semis nearer the centre. A single-storey roof changes the arithmetic of a rooflight: the light only has to travel from ceiling to floor rather than down through an intervening bedroom, so a smaller opening reaches the same result on the room below.

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The classic dark spot in a bungalow of this kind is the internal hallway, boxed in by bedroom and bathroom doors on every side and lit, if at all, by whatever daylight makes it past the front door's glazed panel. A sun tunnel dropped through the roof void above that hallway brings genuine daylight into a space that a bedroom window never could, without the disruption of a full rooflight and its kerb. A bathroom with no external wall of its own is the other regular candidate, and the same small, low-disturbance unit usually suits it better than a larger one.

Where a bungalow has been extended into a garden room or a wider kitchen-diner, the new flat or shallow roof is usually the better place to put a proper rooflight rather than the original hipped roof over the bedrooms, and a survey settles which of the two roofs actually needs the daylight most.

The newer cul-de-sacs and their glass

The most recently built streets in Somersham sit on the village's outer edge, close-set cul-de-sacs of brick and render with larger windows at ground level than the older semis ever had. Owners here are rarely short of daylight downstairs; the usual reason for adding roof glass is an open-plan kitchen-diner pushed back into the garden, or a loft room converted for an office or a teenager's bedroom, and the question quickly turns from light to heat.

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A young plot with no established trees and nothing tall nearby gives a roof slope the run of the sky, which is exactly the flat-fen condition described above, and a south or west-facing rooflight over an open-plan kitchen can put a strong, direct band of sun across the worktop for a good part of a summer afternoon if the glass is left to a standard specification. Newer homes are also built tighter to hold heat in through winter, which cuts both ways once the same wall and roof insulation start holding summer heat in as well.

The fix sits in specification rather than in a smaller opening: a solar control outer pane holds back much of that heat while keeping the room bright, and an electric opening rooflight with a rain sensor lets warm air collecting near the ceiling clear on a still evening, closing itself the moment rain starts. Our energy efficient rooflights service covers how glass, shading and ventilation are chosen together for a plot like this.

Flat fen land, wide sky, hard weather

The land around Somersham does not just clear the sun; it clears the wind too, and the two go together on a fen-edge roof. Nothing about the flatness changes what a rooflight can give a room in principle, but it does change how the unit has to be specified and fitted to last.

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A south-facing slope with clear sky in front of it gets the full arc of the sun from a low winter angle through to a high midsummer one, which is useful light for most of the year and a heat problem for a few weeks of it. A north-facing slope on the same house gets none of that direct sun and instead gives a steady, even light that changes little through the day, which suits a study or a workroom that does not want glare crossing a screen. Working out which of a house's slopes faces which way, and how much open ground sits in front of each one, is the first thing a Somersham survey settles, because a compass reading alone does not tell the whole story on flat ground with a long view in every direction.

Weather off the fens tends to arrive with little warning and driven hard by wind that has crossed open farmland with nothing to slow it, so an opening rooflight on an exposed Somersham roof needs seals and fixings specified for that exposure rather than for a sheltered street in the middle of a town. Our guide to which way a skylight should face works through the orientation side of this in more depth for anyone planning ahead of a survey.

Planning with Huntingdonshire District Council

Somersham falls under Huntingdonshire District Council for planning, the same authority that covers Huntingdon, St Ives and the villages around them. For an ordinary house away from any special designation, adding a rooflight generally sits under permitted development, and the limits that matter most are straightforward: the finished unit must not project above the plane of the existing roof slope by more than 150mm, it must not rise above the highest point of the roof, and one facing a neighbour's garden or a side boundary needs obscure glazing and either a fixed pane or an opening light set at least 1.7m above the floor it serves.

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The older core of the village, around the church and the site of the former bishop's palace, is the sort of place where a conservation area sometimes covers the historic ground rather than the whole parish. Whether an address sits in one is something we check against Huntingdonshire District Council's own mapping for the specific address before a light plan is drawn up, rather than assume either way from the street name alone. A listed building, where one exists, always needs listed building consent regardless of size, whatever the general rule turns out to be for the rest of the street.

Where the house sitsUsual planning routeWhat tends to help
Ordinary house, standard designationPermitted developmentStay within the 150mm limit
Older core near the church or palace siteCheck the council's mapping firstA flush, rear-facing unit
Listed buildingListed building consentA discreet conservation profile
Flat or converted premisesPlanning applicationFreeholder's agreement in writing

Building Control sits alongside that planning question rather than replacing it: a safety-glazed inner pane where someone could stand or sit underneath, a strip either side of a party wall left clear of openings, and a thermal standard the glass has to meet. Our Building Regulations guide and our fuller planning permission guide set both of these out in detail for anyone working through the numbers before a survey.

Somersham: from the old core to a finished room

A Somersham job starts on site rather than on paper: a look at the roof and the room it covers together, a reading of which way each slope faces and how much open ground sits in front of it, and a conversation about how the room is actually used through the day and the year. Any address in the older core near the church gets checked against the council's mapping before anything else is discussed.

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Out of that visit comes a written light plan, set out alongside the quote: the position and size of each opening, the glass chosen for its slope, and any blind, sensor or vent fitted, with the reasoning behind each choice spelled out rather than left for you to take on trust. Once that plan has your sign-off, the work itself follows the same standard whichever street it is on: fitted to current Building Regulations, the notification to Building Control handled on your behalf where the job needs one, and the room lined and made good before we call it finished. A 10-year workmanship guarantee covers what we fit.

We cover Somersham alongside the rest of Huntingdonshire, including St Ives a short way to the south-west and Huntingdon further along the valley, where the roofs are older and closer together but the same light-first approach applies. For a sense of what a project like this typically costs, our rooflight and skylight costs page gives general ranges, and how we plan the light explains the thinking behind every quote in full. When you are ready, book a light survey or message us on WhatsApp.

Somersham: permission, dark hallways and new streets

A few questions Somersham homeowners tend to ask before we have even reached the roof.

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Do I need planning permission for a rooflight in Somersham?

Usually not, provided the unit stays within the permitted development limits: no more than 150mm proud of the roof slope, not above the ridge, and obscure glazed with restricted opening if it faces a neighbour's garden. Addresses in the older core near the church and the former palace site are worth checking against Huntingdonshire District Council's mapping first, since we do not assume a conservation area applies or does not without looking, and a listed building always needs its own consent.

My bungalow hallway has no window at all. Is there anything that can help?

Yes. A sun tunnel run through the roof void directly above a boxed-in hallway or bathroom brings genuine daylight down through a small dome and a reflective tube, with far less disruption than a full rooflight and no roof void to build a proper kerb into. It suits a bungalow particularly well because the run from roof to ceiling is short and straight.

Will a rooflight on a new cul-de-sac house get too hot in summer?

It can, if the glass is left at a standard specification on a south or west-facing slope with open ground in front of it, which is true of the open, south or west-facing plots without established trees nearby that make up a share of Somersham's newer streets. Solar control glass, an opening unit with a rain sensor, and a blind agreed at the survey stage rather than afterwards keep the room bright without turning it into a greenhouse for the hottest weeks of the year.

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