Insulation in Holt
Loft depth, solid wall work, floors and draughts around Holt and BH21, surveyed as one job before anything is priced.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
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If you heat a house at Holt with oil or electricity, the fabric is worth more to you than it is to somebody on the gas main, because every unit of heat you lose through the ceiling was bought up front. Start with the loft, finish with the walls, and do the draughts on the way past.
The problems that point to insulation tend to follow a pattern. A house that eats a tank of oil faster than it used to. A back bedroom or a converted roof space that will not hold heat whatever the thermostat says. Or a cottage where the walls feel cold to the hand and the corners go black over winter.
None of those are one problem with one answer, so we survey the whole envelope rather than quoting for the first thing you mention. You get photographs of what is actually up there and behind it, a written quote that names the material and the depth, and an order of work that puts the cheapest heat first rather than the biggest invoice.
The work
Heat you paid a delivery charge for
The loft, and it is nearly always first. A lot of homes out in Holt are off the gas main, and a loft is worth more in a house heated on oil or electricity than in one on the mains.
Most lofts here have something in them and it has settled, so we lift it, straighten it, take out anything wet or full of debris, and build back up: one layer between the joists, a second run across the top so the timbers stop being cold stripes on the ceiling. Aim at 270mm of mineral wool laid as a full width eco roll, and an even 250mm carried out to the wall plate is worth more than a deeper heap in the middle, with 0.16 the u-value a renovated roof is expected to reach. Vent trays go in at the perimeter first so the material can be carried right out over the wall head without shutting the eaves.
The tank, the cylinder and every metre of pipe. This is the part that gets left off other quotes and it matters more in an oil or electrically heated house. A cold water tank in the roof wants lagging on its sides and lid, with the ceiling directly beneath it left clear so it does not freeze. The cylinder wants a proper jacket over whatever foam it came with, and the pipework wants lagging on every run, including the awkward bends everybody skips.
There are listed cottages and farm buildings around Holt, and none of that fabric has a cavity to fill. The choice is internal wall insulation on the coldest elevations or external wall insulation, and on an old wall the build-up has to let the wall dry rather than seal it: a vapour tight board taken straight onto damp solid brick shows up as damp at skirting level a winter later. Where a barn or a cottage has a room in the roof there is no floor to lay into and the work goes to rafter level: rigid board, foil faced PIR, between and under the rafters, or a multi-layer foil quilt such as TLX where a sloping ceiling has no depth to lose. Where there is a cavity, a borescope goes in and somebody looks before anybody quotes a fill.
How it runs
Insulating walls, floors and roofs around Holt
Insulation work around Holt begins with a survey of the whole house: roof space, walls, floors and ventilation. Older solid walls and newer cavity walls want different treatment, so Thomas establishes which you have before suggesting anything. His written price itemises the survey, clearing, each material with the depth or thickness proposed, any vents or airflow work, and the waste. Each item stands on its own line.
A loft with a hatch and a ladder is straightforward. A cottage with a low roof space over a lath and plaster ceiling needs care, because that old ceiling will not take much weight. A converted barn may have no loft at all, so insulation goes into the slope from inside. Old material comes out in bags and leaves with us.
A wet patch, a cracked tile or a fan blowing into the roof is photographed and priced for you before anyone deals with it.
Loft insulation, cavity fill and internal wall lining are permitted development, with no application needed. External wall insulation alters the look of the building, which is why the Planning Portal treats it differently. Holt has no conservation area, but if the house is listed, Dorset Council's listed building consent is needed even for work inside.
Cost
Low eaves, solid walls and ceilings that follow the roof
The area is the easy part to measure. The awkward parts decide the price, so there is no rate per metre.
The roof space. A low loft over a lath and plaster ceiling has to be worked on crawl boards, slowly. A newer house with a hatch and a fitted ladder is quick. A barn conversion with no loft means insulating between the rafters from inside, with the plasterboard taken down and put back.
The walls. A solid wall cannot be cavity filled. It is lined inside with a breathable system or insulated outside, both bigger jobs than a cavity fill. The borescope decides which you have.
Floors. A suspended timber floor can be insulated between the joists from below if there is a void to crawl in, or from above with the boards up.
What is already there. Boarding that comes up and goes back, and old material to bag and remove, come before any new roll is laid.
Ventilation. Eaves trays, air bricks under a floor, lagging for the tank and pipes: all part of doing it properly. Approved Document L sets the standard.
Ask what finished depth will be laid, whether old material comes out or gets buried, and whether the tank and pipe runs are on the list.
If it is urgent
A cold, damp house with winter coming
A roof space that has gone damp, black mould in the corners of a bedroom, or a house you cannot warm with a cold snap forecast all need looking at before winter settles in. If you heat with oil, a tank emptying faster than it used to is a sign too.
Do not stuff more insulation into a damp loft yourself, since insulating a space that cannot breathe makes it worse. On the first visit we establish whether the fault is insulation, ventilation or a mix of the two. If it cannot wait, give us a ring instead of using the form, and should the call go unanswered, we return it as soon as one of us can. Insulation work is booked Monday to Friday, 8am to 6pm.
Worth knowing
Insulating a house that is not on the gas main
A large share of Holt buys its heat rather than metering it: oil for most, direct electric for a smaller number. That does not change the work, but it changes what the work is worth and the order you should do it in. On the mains, heat arrives quietly and the bill turns up later.
On oil you pay for a tank before you burn any of it, and a house that leaks warmth is a house that empties the tank early, in the middle of winter, at whatever the going rate happens to be that week. So the cheap fabric jobs, loft depth, eaves, hatch, cylinder and pipe lagging and draughts, pay back faster here than they do a few miles away in town.
It also matters if a heat pump is anywhere in your thinking, and off the gas main it usually is eventually. A heat pump runs at a much lower flow temperature than an oil boiler, which means it only behaves well in a house whose heat loss has already been brought down. Fabric first, plant second, in that order, or you end up buying a bigger unit to feed the same holes.
One practical note while you are planning: insulation fitted in a home is zero rated for VAT until 31 March 2027, and the notice covering it is public and worth a read. So if any quote for it adds VAT, ask why.
Who you are dealing with
The man who surveys your house and writes the price
Homes in Holt, Furzehill and Colehill, and over at Wimborne Minster and Three Legged Cross, are all in BH21 and Dorset Council's area. The distance from our Boscombe base to Holt is 8.6 miles. Surveying and pricing the house is Thomas Hannen's own job, as the business owner.
A customer verified by Checkatrade gave us 10 out of 10 for their job. The survey and the written quote, listing each material, are both without charge. Look us up: Bournemouth Roofing & Building Ltd, registered in England and Wales, company number 15471719. Before you book a visit in Holt, you can read our customers' Google reviews, word for word, on our reviews page.
Planning at a glance
Do you need planning permission in Holt?
Most repairs in Holt need no application at all. What decides whether a change to the outside of your house does is who the council is, whether a conservation area or a listing applies, and whether the place sits in a protected landscape.
| Question | In Holt |
|---|---|
| Who decides | Dorset Council is the planning authority for Holt. Dorset Council's heritage pages set out what it controls. |
| Conservation area | None covers Holt, so a like-for-like repair is ordinary maintenance. |
| Listed buildings | Yes, there are listed buildings in and around Holt. If yours is one, work can need listed building consent. |
| Protected landscape | No National Park or National Landscape covers Holt. |
Questions
Questions about insulation in Holt
A lot of Holt is on oil. Where do we start?
In the roof, before the tank. Oil heats a lot of the houses in Holt, so the heat leaving through your ceiling has already been bought and is standing in a tank in the garden. The fabric decides how much you burn. Getting the ceiling right is the one job that gives something back on every fill rather than on a monthly bill.
Why are the ground floor rooms colder than upstairs here?
Because the ground under Holt drains badly and a suspended timber floor sits in cold damp air all winter. The airbricks have to stay clear for that void to dry, so the work is material between the floor joists with the ventilation left running, not vents blocked up. I lift a board and look before quoting, because a wet void changes what can go in there.
Is there anything the council needs to see?
Not for improving a house you already own. Dorset Council is the authority here, and Holt has 13 listed entries and no conservation area of its own, so unless yours is on that list nothing goes in for approval. A listed cottage is different, because the ceilings and the wall linings are usually part of what is protected and consent has to come before the work.
Do you come out as far as Holt?
Holt is under nine miles from our base, so getting over is easy. Thomas Hannen comes himself, gets into the roof space, measures the depth in more than one place and looks at the hatch and the vents. A written itemised quote follows that lists each part separately, and neither the visit nor the quote is charged for.
Our loft hatch is tiny. Is that a problem?
It slows the job down and it is worth widening while we are there. A small opening means material goes up in compressed bales and gets opened out inside, which works, but you will never make use of the space above it. The bigger issue is the flap: a sheet of ply with no seal round the edge leaks warm air out of the landing all winter.
Nearby, and next door
Insulation near Holt
Nearby places we also cover for insulation, with straight-line distances from Holt, and the other trades we offer in Holt itself.
Insulation nearby
Our other trades in Holt
Insulation guides
Part L: do you have to insulate when you re-roof? Black mould on walls: what causes it and what stops it PIR board vs mineral wool: which insulation?Everything we do in Ferndown Insulation, all areas Every area we cover
Free quote
Get the whole envelope looked at, not just the loft
Tell us what the house does in cold weather and we will come and see it. Free site visit, free written itemised quote, and the work in the order it pays.