Insulation in Beacon Hill
Loft top-ups, roof rooms and wall insulation on the seventies and eighties housing around Beacon Hill, ventilated properly and quoted in writing.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
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Most lofts in Beacon Hill already have something in them, so what they need here is a top-up, not a fresh start. A second layer of mineral wool goes over the joists rather than between them, bringing the depth to about 250mm, and that is the cheapest heat you will ever keep in a house.
Heat leaves Beacon Hill homes through a thin loft, under old storage boards and through hurried conversions. A bungalow where the back bedroom never warms up, because the whole floor plan sits beneath a single roof and the loft is the biggest cold surface in the house. A loft that was boarded out for storage years ago, with the original wool squashed flat underneath the boards and doing very little. And a converted roof space or garage that costs a fortune to heat because the insulation went in around whatever was there at the time.
Thomas can look at all three when he comes out to Beacon Hill. The site visit is free, and so is the written itemised quote. If your loft only needs a cross layer and a sealed hatch, that is what the quote will say.
The work
You can only reach the last few inches from outside
Topping up an older loft. Many older lofts were given one layer of roll laid between the joists, which was once the whole specification. Over the years it settles, gets knelt on and is pulled aside for cables.
We do not usually take it out. We straighten what is there, fill the gaps at the ends of the runs, and lay a fresh layer across the joists at right angles, between and over, so the timber stops acting as a cold bridge. A bungalow has nowhere else for the Christmas boxes, so a lot of bungalow lofts have chipboard screwed straight to the joists. Insulation under a board is insulation you have paid for and cannot use: we lift the boarding, bring the depth up underneath, then raise the deck back on loft legs so the wool sits full and loose below it.
A trussed roof means a lattice of timber to work around and eaves so shallow you can reach the last few inches only from the outside. Wool stuffed hard into that gap blocks the airflow, and a freshly insulated loft floor is colder above than it was before, which is exactly when condensation starts. Vent trays go in at the eaves, the airflow stays open, and any downlighter in the ceiling below gets a cover rather than a heap of wool. Where the roof space is already a room, or a garage has become one, there is no loft floor to work on: that is rigid board between and under the rafters with a vapour control layer and the ventilation gap kept clear above, or a multi-layer foil system where head height is already tight. Then an insulated, draught sealed hatch, and lagging on the tank and pipework.
How it runs
Ceilings, roof rooms and walls under one survey
Thomas comes out and looks at the whole house himself: the loft, any room in the roof, what the walls are built from, and where damp or cold is showing. His quote lists the survey, clearing, the material and its depth or thickness, ventilation, and disposal, each on a separate line, so you can see what you are paying for in each part of the house.
The work runs in a set order from start to finish. In the loft, boards go across the joists as a walkway, the hatch area is sheeted, and old material is bagged up there before it comes down so it does not drift through the house. Everything we take out goes with us. Should we find damp timber, wiring lying in the insulation, or a bathroom fan venting into the loft, you get a photo and a price before anything else is done.
Work inside a loft needs no planning permission. The village has no conservation area, and unless your house is on the Historic England list, insulating the outside of the walls is normally permitted development as well, and Planning Portal guidance on insulation sets out the line. Building control does apply: regulation 23 says that renovating most of a wall or roof means bringing all of it up to standard. Dorset Council covers both, and we check the address anyway.
Cost
What sets the cost of insulating a house
We do not quote insulation by the square metre. The same floor area can take a morning or two days.
Which part of the house. A loft with open joists is the simplest. A room in the roof has to be insulated behind the sloping ceilings and the knee walls, and walls are a separate question again: cavity fill, internal lining or external insulation.
Getting into the loft. A bungalow with the hatch in the hall ceiling, a house with a boarded loft full of storage, and a roof room with no loft floor at all are different surveys before any mineral wool is ordered.
What comes out. Old, compressed or damp insulation has to be bagged and removed first, which is a cost of its own.
Ventilation. More insulation makes the loft colder, so the eaves must stay clear, and vents or a breathable membrane may be needed to stop condensation.
The walls. A cavity is checked with a borescope before anyone fills it. A solid wall cannot be filled at all, so lining or external boards are priced instead.
The standard. Approved Document L sets the U-value the work should reach.
Ask other quotes what depth or U-value they are working to, whether the boarding is raised or just refitted, and whether the eaves will be kept clear.
If it is urgent
Condensation, black mould or a room that will not warm up
Insulation rarely brings a true emergency, but a loft that drips, black mould that keeps coming back, or a room you cannot heat through a cold snap should be looked at soon. Ring rather than using the form.
The first visit works out whether the problem is missing insulation, blocked ventilation or both, and whether anything is getting wet that should not be. If a fan or a pipe is the cause, we make that safe first. Scheduled work runs Monday to Friday, 8am to 6pm; phone about anything pressing, and if we cannot answer at that moment, we will return your call as soon as we can.
Worth knowing
No conservation area here, and that widens the choice
Beacon Hill has no conservation area over it, though the Historic England list is worth a check for your own address. That sounds like a technicality until you price a wall. On the older villages a few miles north, anything that changes how an elevation looks runs into consent before it runs into a builder, and external wall insulation changes how an elevation looks more than almost anything else you can do to a house.
Here that argument does not start. The render, the board thickness and the finish are your decision, subject to the ordinary rules on how far out from the wall you can build and what happens at the boundary.
What we would actually advise is to spend the money in order. The loft first, because it is the cheapest heat saved per pound and it is done in a day. Then the draughts, the hatch and the service holes, which cost very little and are felt straight away.
Cavity wall insulation next if the survey finds an unfilled cavity, and some cavities were partly filled when they were built, so it is worth checking rather than paying twice. External wall insulation last, because it is the biggest job and the one that only makes sense once everything above it is done. Free rein is useful. It is not a reason to start at the expensive end.
Who you are dealing with
Insulation work in BH16, and the firm doing it
Beacon Hill is 9.8 miles from our Boscombe base. We cover it along with Upton, Lytchett Matravers, Corfe Mullen and the other BH16 addresses near the A350, and Dorset Council is the authority for planning and building control. Send us your postcode if you are unsure.
The company is Bournemouth Roofing & Building Ltd, registered in England and Wales, number 15471719. Thomas Hannen owns the business and comes out himself to look at the loft and walls and to give you the price. On Checkatrade, a verified customer scored us 10 out of 10. There is no charge for the visit, or for the itemised quote in writing. Before you book a visit in Beacon Hill, you can read our customers' Google reviews, word for word, on our reviews page.
Planning at a glance
Do you need planning permission in Beacon Hill?
Most repairs in Beacon Hill 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 Beacon Hill |
|---|---|
| Who decides | Dorset Council is the planning authority for Beacon Hill. Dorset Council's heritage pages set out what it controls. |
| Conservation area | None covers Beacon Hill, so a like-for-like repair is ordinary maintenance. |
| Listed buildings | Nothing in Beacon Hill is on the statutory list, so listed building consent does not come into it. |
| Protected landscape | No National Park or National Landscape covers Beacon Hill. |
Questions
Questions about insulation in Beacon Hill
We are in the Green Belt. Does that block insulation?
No, the Green Belt does not block insulation. Green Belt policy is about new building on open land, so it bites on an extension, an outbuilding or a garden room and has nothing to say about work inside an existing roof.
Beacon Hill has no conservation area either, so unless your own house is listed there is normally no control on how it looks. Dorset Council is the authority. The only rules touching a loft top up are the building regulations on ventilation.
What happens to the water cistern once the loft is colder?
It has to be dealt with in the same visit or it freezes. Raising the depth makes the roof space colder, which is the point, and a cistern that used to sit in warmed air no longer does. So it gets a jacket, the pipes in and out of it get lagged, and the patch of ceiling directly beneath is deliberately left thin so a little warmth still reaches it. It usually sits in the coldest corner of the loft.
How many days will you be at the house?
For a straightforward top up, one, and often part of one. What moves it is the hatch, how much old material has to come out and whether anything up there needs fixing before the depth goes on. A trussed roof with clear access is simpler to move around in than a cut roof with purlins and a chimney through the middle. The number of days goes on the written quote.
Our west facing room stays cold whatever the heating does. Why?
Because that wall is the one working. The most exposed elevation at Beacon Hill faces south west and the ground here stays naturally wet, so a wall on that side spends winter damp on its outer face, and a damp wall carries heat away faster than a dry one. Insulating the ceiling above it will not fix a wall. We check the loft over that room for a bare perimeter first, then talk about the wall separately.
We have downlights in the ceiling below. Does that stop it?
It changes the job instead of stopping it. Material laid over a recessed light traps the heat it makes, so every fitting needs a cover or a clear gap around it, and the covers have to be the right sort or the fitting cooks anyway. On many older ceilings the cable is often stapled along the joist as well, and burying cable under insulation is its own consideration. We count the fittings and they get their own line.
Nearby, and next door
Insulation near Beacon Hill
Nearby places we also cover for insulation, with straight-line distances from Beacon Hill, and the other trades we offer in Beacon Hill itself.
Insulation nearby
Our other trades in Beacon Hill
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 Corfe Mullen Insulation, all areas Every area we cover
Free quote
Want to know what your loft actually needs?
We will get up there, look at the depth, the eaves and the ventilation, and put it in writing. The visit and the quote are free.