Loft insulation in Tolpuddle
Two layers over the ceiling, nothing visible from the street, and an itemised written price first.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
Loft insulation in Tolpuddle is two layers of mineral wool, one between the joists and one cross laid over them to a finished 270mm. None of it is visible from the street, which is the useful thing about it in a village like this.
The calls come in three shapes. A room that will not hold heat. A loft with an old, thin and uneven layer in it that stops short of the walls. Or damp, seen as mould on the underside of the roof or a musty smell every time the hatch comes off. Tolpuddle is a village where a lot of what you might want to do to a house involves asking somebody first. Insulating the loft is not one of those things. We come and look at the roof space, then price it in writing. The visit costs nothing and neither does the itemised quote.
The work
Rolls, boards and the awkward corners
What comes out, and what stays. Most lofts here hold something already, often laid a long time ago. It has settled, gone patchy, been pulled back around cables and stops short of the wall plate with bare timber showing. Dry and sound, it is straightened, the gaps closed and kept as the first layer. Wet from an old leak, crushed under boards or contaminated with droppings, it is bagged and taken away with us.
The two layers. Mineral wool in a roll, glass wool or rockwool, is friction fitted between the joists first. The second layer is laid across them at right angles to a finished depth of 270mm, and that is the one that matters, because it covers the joists and stops the timber itself carrying heat out of the ceiling. Batts suit uneven joist centres, common in an older cut roof, and loose fill suits a roof space nobody can crawl through.
Where the depth will not fit. Rigid board, PIR such as Celotex, gets more out of less thickness, so it goes in a low eaves run, a boxed landing or against a sloping ceiling. Sheep wool and multi-foil have narrow uses too. Where there is a room in the roof or a dormer the work follows the rafters, with board cut between them, a clear air gap kept above to the underlay, a second layer under and the joints taped.
Air has to keep moving. Insulation stops at the wall plate and is never pushed over it. Vent trays hold the gap open so cross ventilation carries on under the felt, and where a roof is on breathable membrane rather than old bitumen the detail changes a little. A ridge vent goes in where the eaves cannot be opened. Cover the eaves and you have swapped a warm bedroom for condensation, black mould and wet timbers.
The hatch, the tank and the boards. The hatch is insulated on the back and draught sealed round the frame, which closes the biggest vapour path out of the house. Any cold water tank up there, and the pipework running to it, is now in an unheated space and wants lagging. A cable gets lifted and clipped over the new material instead of disappearing under it, since wiring that cannot shed heat carries less current, and every recessed light needs a fire rated cover. Boarding, where you want it, sits on loft legs high enough to clear the second layer, and the loft ladder and a working platform stay where they are.
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.
Insulation inside a loft is not development, so no planning application arises, which Planning Portal guidance on insulation confirms. Dorset Council is building control and Approved Document L sets the standard. There are twenty seven listed entries in and around the village, and on one of those listed building consent covers internal work as well as external. HMRC VAT Notice 708/6 sets out the VAT position on insulation.
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 cottage with the trap in a bedroom cupboard, a house you can stand up in once you are through the hatch, and a modern roof full of bracing all take different amounts of time. 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. We are out along this valley regularly, so a loft that has gone damp gets a look rather than waiting for a run of work in the area. The phone is answered 24 hours for emergencies; scheduled work runs Monday to Friday, 8am to 6pm.
Worth knowing
The loft is free of the rules, the roof window is not
Tolpuddle has its own conservation area, and it controls appearance: what the street and the lane can see. That catches a change of roof covering, a dormer, and a rooflight on a slope facing the village. It does not reach your loft at all. Insulation goes over a ceiling, inside the building, and nothing about it is visible from anywhere, so it is one of the very few improvements here that involves no application and no waiting.
It is worth knowing where the line sits, though, because the two jobs get muddled. People insulate a loft, find the space is now comfortable, and start thinking about a roof window to make use of it. That is the point at which the conservation area becomes part of the conversation, and on a listed building it is consent rather than planning. So if a rooflight is anywhere in your thinking, find out first, then decide whether the insulation belongs over the ceiling or up at rafter level as a warm roof.
Who you are dealing with
A local firm you can check
We cover Tolpuddle, Milborne St Andrew, Bere Regis, Crossways and the DT2 addresses along the valley, with Dorset Council for planning 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
Tolpuddle questions we get asked
Will you be here all week?
No. A day covers most of these lofts. What slows it down is the way in, so a small trap over a cupboard, or a roof space packed with stored things, can turn one day into two. You are told which before you agree to anything.
Do we need permission in the conservation area?
Not for insulation. It is inside the building, it is not development and nothing is visible from the street. A rooflight, a dormer or a change of covering is a different matter, and on a listed building consent covers internal work too.
There is some insulation already. Is more worth it?
Usually. It settles rather than fails, and expectations of depth have moved, so the U value of that ceiling is likely well short of what Part L asks for. Cross laying new over the old costs less than clearing it out and starting again.
Will it cause condensation?
Insulation does not create moisture. It lowers the temperature of everything above the ceiling, so what the house already produces condenses up there instead of dispersing. Keeping the eaves running and sealing the hatch is what prevents it.
Will we feel it on the heating bill?
Yes. Heat loss upwards is the largest single loss in most houses, so a ceiling at full depth is the thermal gain people notice first, and it lifts the fabric score on an EPC. Sealing the draught round the hatch is felt the same evening.
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Get the roof space priced
Thomas comes out, gets into the loft and itemises what it needs in writing. The visit and the quote are free.