11.3 road miles north-north-west of Bournemouth
skylights & rooflights in holt
Holt Heath, close to the village, is a National Nature Reserve, and Holt itself is a village just north of Wimborne with homes spread along its lanes. Each roof is read in person, from rafter to ridge.
what a spread-out parish builds under
- Older cottagesLow eaves and hand-cut timbers that never quite match.
- FarmhousesDeep roofs, big lofts and several additions over the years.
- Lane bungalowsSingle storey, with a loft above rooms that get little light.
- ExtensionsGarden rooms and kitchens added to the back of older homes.
the designations to look up for a Holt address
- planning authority
- Dorset Council
- listing and landscape
- check the address
- road miles
- 11.3
across the generations
roofs in a parish of farms, heath and forest
Holt parish covers around 5,500 acres of farmland, forestry and sandy heath, with Holt village and a scatter of smaller settlements among them. Homes here were built at different times and for different reasons, and their roofs show it.
Two generations of roof in one parish
Holt's village hall was built as a school in the 1840s and its parish hall dates from 1935. The houses are as varied as that.
A parish that is mostly agricultural, forestry and heath does not have the regular streets of an estate town. Holt village, Broomhill, Holtwood, Whitemoor, Gaunts Common and the other settlements in the parish grew as clusters along lanes. The homes in them range from cottages of great age to bungalows put up in recent decades, and a survey on one lane can look nothing like a survey on the next.
The difference matters before anyone picks a window. An old roof has been altered by successive owners, and its rafters, purlins and ceiling joists may not line up with one another. A later house follows a plan. So we begin by establishing which of the two kinds of roof we are standing on, then measure accordingly.
The rooms that need help are fairly predictable. In a farmhouse it is the upstairs bedroom under the slope, where the only light comes from a small window in a thick wall. In a cottage it is the back kitchen or the stair landing. In a bungalow it is the hall. Each of those rooms sits directly under a roof slope, which is what makes a rooflight a sensible answer.
Trees matter more here than in a town street. Where oaks or pines stand close to a house, one slope may sit in shade for most of the day while the other gets direct sun. The survey notes which way each slope faces and what stands in front of it, so the window goes on the slope that will actually deliver light to the room.
The rooms under the roof in an older home also run warm in summer and cold in winter, because the covering is thin and the insulation, if any, was added late. An opening roof window helps ventilate such a room, and glazing with a good thermal rating keeps the heat in during winter. A blind fitted to the window shades the room on bright afternoons.
A roof window suits both kinds of roof, though the preparation differs. Heat loss through the glazing is capped as well, at 2.2 W/m²K on rooflights, with roof windows held to 1.4 W/m²K unless they carry Band B on the energy label instead, and those caps hold in a cottage as much as a bungalow. The two lists show what we weigh on each type of roof.
Older cottage or farmhouse roof
- Rafter spacing varies from bay to bay
- Timbers may be hand-cut and uneven
- Later work can hide the original frame
- Listing or a bat roost may apply
Later house or bungalow roof
- Rafters or trusses at regular centres
- Modern tile and underlay to match
- Loft depth points to a window or a tunnel
- Fewer unknowns, but still measured
Where to look up a Holt address before planning
Holt lies in Dorset, so the planning authority is Dorset Council, which replaced East Dorset District Council in 2019.
A letter headed with the old district name still records a real decision on the property, but a new application goes to Dorset Council. Whether a particular Holt address sits inside a conservation area is something to read off the council's map, since the line follows individual properties and the answer can differ between neighbours.
A rural parish raises questions that a town does not. Older farm buildings can be listed, and a listing covers the roof. Protected heath and woodland lie close to the village, with Holt Heath a National Nature Reserve. None of these puts a rooflight out of reach. Each is a reason to look an address up with care, and our planning guide covers the rules and the order to check them in.
Building Regulations are a separate matter from planning. Cutting rafters for a new opening brings them into play, and the work can be approved through the local authority's building control service or through a registered building control approver.
If a house or barn is listed, the consent question comes first. Permitted development cannot stand in for it, and works carried out without consent are an offence. Owners of converted farm buildings sometimes find that a listing applies to a building they thought of as modern, so the national list is worth searching by address even for a house that looks recent.
You can run the same checks yourself if you want answers in hand before the survey.
| Source | Shows | Why it matters |
|---|---|---|
| Dorset Council website | Conservation areas | Rooflight rules can be tighter |
| National Heritage List | Listed buildings | A listing covers the roof |
| Planning register | Past applications | Old conditions may limit additions |
| Landscape and nature maps | Protected land nearby | Raises questions for the council |
| Building control | Approval route | Needed when rafters are cut |
Reading the frame of an old farm or cottage roof
The terms on a survey sheet are plain once someone has shown you the timber they describe.
In a roof built up over generations, each timber does a separate job and none is guaranteed to be where you expect. Common rafters run from the ridge down to the wall plate. Purlins run along the slope and carry the rafters part-way down. Ceiling joists tie the walls together at the bottom. A window that needs a rafter removed also needs the load carried round the opening, which is the job of a trimmer.
An old roof can hold surprises. A rafter may have been cut in an earlier alteration and joined with a timber of a different size. A purlin may sit exactly where the window wants to be. For that reason we open the roof before we order, and the survey sheet carries the actual readings of this roof instead of a standard layout. On one example cottage roof the bays between rafters might run from 450 mm in one place to 560 mm in the next, and the size code follows the narrower bay.
Roofs of old cottages, barns and outbuildings can also shelter bats, whose roosts are legally protected. If you have noticed bats around the building, say so when you book, since specialist advice has to come first.
The order of measuring is the same on every roof. We start in the loft, where the rafters and any purlins can be seen from below, then go out onto the slope to read the pitch with an inclinometer and note the covering. Only then do we compare the two sets of readings and write the figures on the sheet. On an old roof the loft side tells us most.
Barn and outbuilding conversions bring their own point. Where a converted single-storey building has a room under the slope, a roof window of the correct size can double as the fire exit. Over two floors the loft calls for a protected stair.
Words from a Holt survey sheet
- Common rafter
- A sloping timber running from the ridge down to the wall plate, repeated along the roof at set intervals.
- Purlin
- A horizontal timber running along the slope that carries the rafters part-way down.
- Trimmer
- A cross timber that takes the load of cut rafters around a new opening.
- Underlay
- The membrane laid beneath the tiles to carry away any water that gets past them.
- Flashing
- The metal surround that ties a roof window to the tiles beside it.
- Wall plate
- The timber along the top of a wall that the rafters sit on.
Long lanes, longer drives and getting glass to the roof
A scattered parish changes the logistics of a fit as much as the roof does.
A house at the end of a lane in a rural parish can mean a long drive, a gate and a turn too tight for a lorry. Glass travels in large sealed crates and may have to be carried the last stretch by hand. Where the house sits behind others, or the drive has a soft verge, the approach is looked at during the survey and the delivery is planned around it.
A bungalow with a low eave can be reached from a platform. A tall farmhouse with a deep roof may need scaffold or a tower, and the ground beside an old building is not always firm. Colehill and Wimborne are the nearest places to Holt that we cover, so a visit is planned alongside work in either.
Garden rooms and flat-roofed kitchens added to the back of older houses can be lit with a flat rooflight. A bungalow hall with no outside wall can use a sun tunnel. Prices only mean something after a roof has been measured, so the list names the things that move the figure and leaves out numbers.
Reach is a point in its own right. On a tall farmhouse roof a window can sit well beyond arm's length from the floor, and an electric opening rooflight with a remote or wall control lets the room be aired without a pole. The survey records the height of the lowest edge above the floor, and the control position is chosen with that in mind.
Heath-edge homes sometimes sit on sandy ground that is soft in wet weather. A scaffold tower needs firm footing, so the tower base is checked on the day of the survey and boards are laid under it where the ground is soft.
Where the house is old and the lane is long, the order of work matters too. Delivery is booked after the survey sheet is agreed, so the right size arrives the first time and nothing waits in a crate at the end of a lane.
What shapes the cost of a rooflight job in Holt
- Type of roofAn old roof with odd timbers takes more time to measure and trim than a regular modern one.
- Access to the roofA low eave beside a driveway is simple. A tall building behind a narrow lane needs a tower or scaffold.
- Size and numberA single window costs less than a row of windows or a window with a long shaft.
- Finishing insidePlaster, reveals and decoration in the room follow the glazing.
- Type of unitOpening, electric or slim conservation designs cost more than a fixed unit.
faq
what Holt homeowners want to know
Is there a conservation area at Holt?
Look up your full address on the Dorset Council website to see. We carry out the same check before we quote and write the answer on your survey sheet.
My cottage has hand-cut rafters. Can a roof window still go in?
Yes, with a trimmer carrying the load around the opening. We read the actual spacing first and the survey sheet records which rafters are affected.
We have seen bats near our barn roof. What should we do?
Tell us when you book. Roosts are legally protected, so specialist advice comes before any work starts on the roof.
Can you reach a house at the end of a long private lane?
Yes. We check the width of the lane and the ground at the house during the survey and arrange the delivery to suit.