Loft insulation in Corfe Castle
Loft top-ups, cleared roof spaces and rafter level work on cottages and houses around Corfe Castle and BH20, looked at first and priced in writing.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
What goes over your ceiling in Corfe Castle is nobody's business but yours. It is the outside of the roof, a vent or a rooflight, that the conservation area controls, so a straightforward loft top-up here needs no application at all.
Two situations bring most of the calls. A cottage where the bedrooms are cold whatever the heating does, and the roof space above them turns out to hold a thin, uneven layer that somebody pushed in decades ago. And a house where damp has appeared on the roof timbers, which is usually a ventilation fault rather than a shortage of insulation.
Either way we look before we quote. The site visit is free, and it means getting into the roof space, measuring the depth in several places, and following the roof down to the wall plate on each side to see whether anything ever reached the edge. You get photographs of what is up there and a written itemised quote, with the clearing, the material, the edges, the hatch and the pipework priced on their own lines rather than rolled into one figure.
The work
Cold roof spaces over old stone walls
Getting in, and getting about. Village roof spaces are rarely convenient. A small trap cut into a bedroom ceiling, a low collar you have to crawl under, and a cut roof with purlins in the way are normal here. None of that stops the job, but it decides how long it takes, and it is why the access is a priced line rather than something buried in a rate. Nothing is stood on a lath and plaster ceiling. We move on boards laid across the joists and work outwards.
What is there, and what goes over it. The usual find is one layer sitting between the joists, settled, patchy in places and missing altogether at the edges. Anything sound stays and gets straightened. Then a fresh roll of glass wool is cross laid over the joists at right angles to the first, covering the timber instead of leaving each joist as a cold bridge. Two layers like that reach around 270mm, which is the depth a modern U value asks for, and the ceiling below stops feeling cold overhead. Batts are easier than roll where purlins and struts break the floor up.
Clearing. Wet material, wool contaminated with droppings, and the old loose fill that finds its way into the eaves all come out, get bagged in the roof space and leave with us. Covering poor material over is how a loft ends up damp two winters later.
Ventilation, and the reason old roofs cope. A cottage roof with no underlay ventilates through itself, which is why these buildings have survived so long without trouble. Insulate the ceiling and the roof space above it gets colder, so the dew point moves and the air up there matters more than it did. We keep the eaves open with vent trays, keep cross ventilation running from side to side, and never take material past the wall plate. Where a roof has been felted at some point, or relaid on a breathable membrane, the eaves are the only route the air has, and blocking them buys you condensation on the underside of the covering.
Services, storage and sloping ceilings. The tank and its pipework end up on the cold side once the ceiling is insulated, so they are lagged and the tank gets a lid. Recessed lights are covered rather than smothered, and cable is lifted above the new layer. Cable and wiring are lifted clear rather than buried. If you store things up there, a raised floor on loft legs keeps the boarding clear of full depth, with a platform at the head of the loft ladder and an insulated, draught sealed hatch. Cottages with a dormer or a sloping ceiling are a different job again: rigid board between the rafters with the air gap kept open above, PIR beneath and the vapour control taped through, which is a warm roof build up.
How it runs
From your call to a written price
Same team from first visit to last, one person to ring, and no sub-contracting your work out to somebody you have never met. The quote is itemised, not a figure on the back of a card: the survey, clearing and bagging whatever is up there now, the material and its depth, keeping the eaves clear, the hatch and any pipework, and disposal on separate lines, so you can compare it properly against anyone else's.
Nothing is left open or unusable overnight. The site is swept at the end of each day rather than the end of the job, and what comes out leaves with us. If something turns up once we start that nobody could have seen, you get a photograph and a price before we carry on.
Insulating a roof space is not development and needs no planning application, which Planning Portal guidance on insulation confirms, and that holds inside a conservation area as well because nothing changes outside. Corfe Castle Conservation Area does control the appearance of the building, so a rooflight, a tile vent or anything else that shows is an application to Dorset Council rather than a free choice. There are 134 listed entries in the parish, and on a listed building listed building consent can be needed for work inside the roof as well as outside it. Insulating a loft sits inside permitted development, building control follows Approved Document L, and regulation 23 expects the whole of a renovated thermal element brought up to standard.
Cost
What decides the price of a loft
No rate per square metre, because the floor area is the easy part and the awkward edges are where the time goes.
Getting to it. A stone cottage with a trap cut into a bedroom ceiling, a house where the roof space is reached through a cupboard on the landing, and a bungalow at the edge of the village with a fitted ladder are three quite different mornings. A hatch on a landing you can stand a ladder under is one job. A hatch over a stairwell, a crawl space you can only move through on your knees, or a loft full of boarding that has to come up and go back, is time before any material is laid.
What is up there now, and what it is sitting on. Old material that has to come out, be bagged and taken away is a cost before anything new goes down, and so is a loft full of boxes that has to be emptied and put back. Joists at 400 centres with a flat run across them is a different afternoon from a trussed roof full of bracing.
Ventilation, and the edges nobody reaches. Insulation stops at the wall plate and the eaves have to stay clear, or you trade a warm bedroom for a wet roof. Getting depth right into the corners and around the hatch, boxing over downlighters and lagging anything that now sits in the cold, is most of the labour. Approved Document L sets what the work is expected to reach.
Comparing quotes? Ask what depth is actually being laid and in how many layers, whether the old material is coming out or being covered over, whether the eaves are being kept clear, what happens to anything you store up there, and whether the hatch and the pipework are included. Two quotes for the same job are usually two different jobs.
If the loft is wet
Water running off the felt, or mould on the underside
Ring rather than use the form. Droplets on the underside of the felt, black mould spreading across the roof timbers, or insulation that is visibly damp are all telling you the same thing: warm wet air is getting into a space that cannot breathe. That does not wait, because it is the timbers that pay for it. We look before anything is added, because putting more insulation into a loft that cannot ventilate makes it worse. Corfe Castle is well under half an hour from us, so a roof space with water running off the underside of the felt gets seen quickly rather than put in a queue. The phone is answered 24 hours for emergencies; scheduled work runs Monday to Friday, 8am to 6pm.
Worth knowing
The inside of the roof is yours, the outside of it is not
The whole of the village sits inside Corfe Castle Conservation Area, and that draws a clean line through this trade. Everything you do above the ceiling and below the tiles is invisible from the street: depth, material, trays at the eaves, a sealed hatch, boarding on legs, even a full rafter level build up. None of it is controlled and none of it needs an application.
What is controlled is anything that changes the face of the roof. A rooflight to make a loft usable, a tile vent or a ridge vent added to ventilate a warm roof, or a change of covering are all matters for Dorset Council rather than a decision to make on the day. That is worth knowing before you plan a conversion, because the ventilation strategy for a room in the roof often depends on vents that would show. With 134 listed entries here, plenty of buildings carry a second layer of control on top, where consent is needed for internal work too. Our advice is simple. Do the invisible work first, get the depth and the edges right, and only take on the visible part with the council's answer already in your hand.
Who you are dealing with
A local firm you can check
We cover Corfe Castle, Church Knowle, Kingston, Stoborough, Wareham and the BH20 addresses around them, with Dorset Council for planning, listed building consent and building control. You are dealing with Bournemouth Roofing & Building, the trading name of Bournemouth Roofing & Building Ltd, registered in England and Wales, company number 15471719, which you can look up in a minute. Thomas Hannen's business, and he is the one who comes out to price the job, not a salesman. A verified customer's 10 out of 10 on Checkatrade. The visit and the written quote are both free.
Questions
Corfe Castle questions we get asked
Does the conservation area stop us insulating the loft?
No. Laying material over the ceiling inside your own roof space changes nothing that can be seen from the road, so there is nothing to apply for. The conservation area controls appearance, which means the covering, a rooflight or an external vent. Those are the parts to check with Dorset Council before ordering anything.
Our cottage is listed. What is different?
The paperwork, mainly. A simple top-up over the ceiling is not usually work that needs consent. Lining out at rafter level, cutting into historic timber, forming a room or adding a rooflight can be, and on a listed building that applies inside as well as out. We will tell you at the visit which of those your job is, and we will not order material until it is settled.
The roof has no felt under the tiles. Should it?
Not necessarily, and that is a common state in old village roofs. An unfelted roof ventilates itself, which is why the timbers are usually dry. It does mean wind and the odd bit of driven rain get into the space, so the top layer is tucked in at the eaves rather than left loose, and we check that nothing is being lifted or moved about up there.
Is it worth it in an old stone house?
It is the cheapest heat loss you will ever stop. Solid stone walls are hard and expensive to improve, but the ceiling is straightforward, and in an old house most of the loss you can still do something about is going upward. The depth is recorded on an EPC, and sealing the hatch deals with the draught that comes with it. You feel it in the bedrooms and on the heating bill in the same winter.
How long does a cottage loft take?
Usually a day, sometimes two. Small hatches, low headroom and awkward corners cost time rather than material, and clearing old wool out through a bedroom trap is slower than through a landing hatch with a ladder. We would rather tell you two days and be right than tell you one and leave the edges short.
Nearby, and next door
Loft insulation near Corfe Castle
Loft insulation nearby
Our other trades in Corfe Castle
Everything we do in Swanage Loft insulation, all areas Every area we cover
Free quote
Want to know what is over your ceiling?
We will get into the roof space, measure the depth, check the eaves and photograph the corners, then put an itemised written price in front of you. Both the visit and the quote are free.