15.7 road miles south-west of Bournemouth
skylights & rooflights in worth matravers
The conservation area dates from 1975 and covers stone-roofed cottages around the pond and the Square and Compass, with newer houses along the lanes beyond, all inside Dorset National Landscape. Every roof is measured by hand.
Purbeck stone and the roofs above it
- Stone slate cottagesRubble walls, heavy stone roofs, small rooms under the eaves.
- Farmhouses and barnsDeep roofs and long spans, some turned into homes.
- Later bungalowsTiled single-storey houses on the village edges.
- Rear and side additionsNewer roofs that can take a larger rooflight.
the designations we read for a Worth Matravers address
- planning authority
- Dorset Council
- landscape and conservation
- Dorset NL: check the address
- protected landscape
- Dorset National Landscape
- road miles
- 23.1
By road via Wareham. The Sandbanks chain ferry route is 15.7 miles.
local stone and slate
a Purbeck village under stone roofs
Worth Matravers sits on the Isle of Purbeck inside Dorset National Landscape, and the village is built from the stone dug beneath it.
Four figures behind every Worth Matravers survey
The village sets limits on how a roof can be altered, and national figures set the performance the new unit must meet.
Most of the older houses in Worth Matravers are made from Purbeck stone, with walls of rubble and roofs of stone slates. The national listing entries for the village describe those materials again and again, for cottages, farmhouses and the Grade II listed pub. A stone slate roof is a different animal from a clay tile one: heavy, laid in courses, and held on timbers that were sized for that weight.
A new window in such a roof is not a casual swap, and the first conversation is about what the roof will take. Heavy stone sits on timbers that have carried it for generations; cut into that carelessly and the load shifts. The survey looks at the sag of the ridge, the condition of the rafter feet and the state of the wall plate before it settles on a position for the opening. If anything in that structure looks doubtful, a structural engineer's design comes before the order does. The thermal figures come from the Building Regulations and apply to any English house; they are the performance floor the glazing has to clear.
Distance is one more number. From Bournemouth the shortest route to the village uses the Sandbanks chain ferry and measures 15.7 road miles. By road via Wareham, with no ferry, it is 23.1 miles. Either way, we plan the survey visit around whichever route is quicker for that morning, so ferry times seldom hold anything up.
Access is part of the picture as well. The lanes round the pond and the pub are narrow, and a stone cottage may stand right at the roadside with no yard for a lorry. A roof window frame is light enough to carry through a house, but a long lantern or a large flat unit needs a different plan for lifting and a place to stand a tower. We walk the route from the lane to the roof at the survey and put it in the quote, so a delivery does not arrive to find the way blocked.
The energy-efficient rooflights page explains how those thermal figures are reached, and the Building Regulations guide covers notification.
- thermal target for a new rooflight
- 2.2 W/m²K
- target for a new roof window, or Band B
- 1.4 W/m²K
- highest storey a roof window can serve as escape
- 4.5 m
Protected landscape, the conservation area and the council
The village sits in Dorset National Landscape, and Dorset Council covers planning.
Dorset Council lists Worth Matravers among the conservation areas of Purbeck, a designation first made in 1975. The whole parish also lies in Dorset National Landscape, the landscape designation that replaced the old AONB label. A conservation area or a National Landscape does not ban a rooflight. Councils restrict them through Article 4 directions on particular streets or through conditions on past permissions, and those show up on the planning register.
What the designations do change is the care taken over appearance. A rooflight on a stone slate roof that faces a lane will draw more attention than one on a hidden rear slope, and the planning officer may expect a low-profile unit that sits flush with the stone. Listed buildings are a further layer, and the heritage records show a good number of them in the village, from cottages and farmhouses to the pub itself. A listing covers the whole building, so the roof is included whichever slope faces the lane. Consent for a listed roof is a separate application from planning permission, and a new opening in one is rarely waved through without it. The cost of finding this out early is a few minutes at a screen; the cost of finding out late is work that may have to be undone.
Our planning guide explains what permitted development covers and where it stops. For a Worth Matravers address we go one step further and read the register, the listing and the conservation map together before a price is written.
You can do the same lookups yourself, in the order set out here. Each takes a few minutes online, and together they tell you whether the house is likely to need an application, a consent, or neither. Keep the printouts: they save time if a neighbour or the council asks later what the position was when the work went in.
Checking a Worth Matravers house before any rooflight is planned
- Find the address on the conservation mapDorset Council's Purbeck conservation area pages carry the boundary for the village and any appraisal adopted for it.
- Search for a listingMany cottages here are listed. Historic England's online list takes an address and shows the entry, which includes the roof covering.
- Read the planning historyThe council's register shows what was approved on the plot, and any conditions attached to past work.
- Ask for a check at the surveyOur survey covers these same entries, and the sheet you receive records what each one showed.
Fitting a window into a stone slate roof
The covering and the timbers underneath both set the size and the detail.
Stone slates are laid in courses that diminish up the roof, and cutting an opening through them means lifting and relaying slates around the frame so the pattern still reads correctly. The slates are salvaged where possible, since matching new stone to old is hard. A roof window sits on a flashing kit made for the covering, and the maker's range includes kits for slate and for plain tile; for a stone slate roof the choice is checked against the thickness of the slates.
Rooms under the slates are small, and the daylight they get is small too. The commonest places to add light are the landing at the top of a steep cottage stair, a bathroom built into the roof space, and a bedroom whose only window looks onto a neighbouring wall. A sun tunnel can serve a landing where the loft above is deep, though a slate roof needs a flashing made for it and that is checked at the survey. The rafters under those slates carry a heavier load than those under a tiled roof, and their size and spacing vary from house to house. Where a bay turns out wide, a VELUX roof window in one of the broader codes can go in without cutting timber. The survey measures each bay, since old rafters are seldom evenly set.
A small room under the eaves of a stone cottage has thick walls and little glass, and the light it gets is often poor. A roof window gives the room both light and a view of the sky, and an opening model helps clear stale air.
Some barn conversions and newer additions in the village have large, simple roofs without such detail, and a low rear extension can take a flat roof rooflight, or a lantern if the room has the height. We keep the stone and slate jobs apart from these in the quote, because the working method is not the same. A stone roof calls for hand work at the opening and more time on the slates, while a tiled extension is quicker once the frame is in. Where one house has both, say a cottage with a block-built kitchen at the back, the two openings are priced as separate pieces of work, and each gets its own line on the survey sheet.
Stone slate cottage roof
- Heavy covering, relaid around the opening
- Rafters sized for the weight, spacing varies by bay
- Flush, low-profile unit expected on view
- Listing and conservation checks come first
Modern tile or flat roof
- Lighter covering, standard flashing kits
- Regular rafter centres, usually quick to measure
- Wider choice of unit and size
- Building Regulations notification still applies
Terms you will meet in a Worth Matravers quote
Planning and heritage vocabulary turns up on top of the roofing terms.
A quote for a village like this one picks up words from three fields at once: roofing, planning and heritage. Dorset Council uses the planning and heritage words in its notices and on its register, and they carry exact meanings. A conservation area, for example, is not the same thing as a National Landscape, and a listing is a third thing again. If the survey sheet uses a term you do not recognise, ask and we will explain it. Planning staff at the council are also willing to say, in general terms, what a term means on their register, and the Historic England list has a plain glossary of its own.
Neighbouring villages share the same stone. Langton Matravers is a short distance along the ridge, and Swanage is the nearest town. The stone slate roofs, listed cottages and the same planning authority make a survey in one a good guide to the other, though each address has to be read for itself. Houses a few hundred metres apart can sit on either side of a boundary line, and a cottage on a lane that is listed may have a neighbour that is not. For that reason we never carry a finding from one address across to another, and the record kept for your house is about your house.
Roofing, planning and heritage terms in the village
- Stone slate
- A roof covering of thin split stone laid in courses that get smaller towards the ridge.
- National Landscape
- The present name for the protected landscape formerly labelled AONB. Dorset National Landscape takes in the parish.
- Conservation area
- An area whose character the council has chosen to protect. It does not by itself ban rooflights.
- Article 4 direction
- A council order that removes certain permitted development rights in a stated area. The register shows where one applies.
- Listed building consent
- The permission needed for work that affects a listed building, separate from planning permission.
faq
Purbeck stone, roofs and what people ask
Can a rooflight go on a stone slate roof at all?
Yes, with the slates lifted and relaid around the frame and a flashing kit matched to the covering. We check the slate thickness at the survey and say what the council might expect. Salvaged slates are kept, relaid around the frame, and any slates that cannot be reused are matched as closely as the supply allows.
Does living in a National Landscape stop me fitting a roof window?
No. The designation changes how carefully appearance is judged, and the council may restrict rooflights through an Article 4 direction. We look up the address and report what applies. A planning application, where one is needed, goes to Dorset Council.
How far is the village for a survey visit?
By road via Wareham it is 23.1 miles from Bournemouth. The Sandbanks chain ferry shortens it to 15.7 miles, and we use whichever route suits the day.
My cottage is listed. What happens next?
For a listed cottage, a new roof opening goes to the council as a listed building consent matter, and we describe the work in writing for that purpose. We can survey and describe the work in writing, but the application and the outcome are the council's.