Insulation in Merley
Loft top-ups, rooms over garages, dormers and cavity walls across the Merley estates, measured before they are priced.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
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Most of the lofts in Merley have the same story in them: a single layer of quilt laid between the joists when the house went up, thinned by settling, squashed under boarding at one end and stopped short at the eaves at the other. It reads deeper than it measures. We put a probe in it on a free site visit and price the difference between what is there and what the ceiling needs.
Cold houses in Merley come in three shapes. A bungalow that costs too much to heat and has a bedroom that never warms up. A room over the garage that is cold underfoot from October onward. And a house where the cavity was filled at some point in the past and nobody can say what with, or whether it is still up the wall.
All three want the same first step, which is a look, not a quote over the phone. We measure the existing depth instead of guessing it, see whether it runs between the joists only, check whether the eaves are open or packed solid, find the tank, the pipe runs and the downlighters, and look at what is going on over the garage and in any dormer. The itemised written quote comes off that, method as well as figure, and nothing is ordered until you have said yes to it.
The work
The cold room over the garage is a floor problem first
Trussed lofts, and working round the webs. Seventy-seven per cent of Merley went up between 1945 and 1982, with half of it in the 1970s and early 1980s, so the roofs are almost all trussed.
A truss is a braced triangle rather than an open loft: the webs cross the space at head height and the ceiling ties are shallow, which is why the original quilt so often stops where it got awkward and the hip ends come up short. We thread mineral wool between the joists all the way out, then run a second eco roll layer across the top at right angles, which is the only way to stop every ceiling tie acting as a line of cold bridge. A renovated ceiling is expected to reach a U-value of 0.16, and in mineral wool that is nearer 270mm than the 250 most people have in mind.
The room over the integral garage. This is the commonest cold room here and it has nothing to do with the loft. A garage under a bedroom is an unheated space with an insulated house sitting on top of it, and in a house of this age the floor between them was given very little. We insulate between and under the floor joists from inside the garage, rigid PIR board cut tight and the perimeter sealed, never left with a gap all round, and we deal with the garage door head and the cold bridge where the floor crosses the outside wall.
A great many lofts on these roads were boarded straight down onto the ceiling ties in the years after the houses were built, and that layer is now compressed flat and doing a fraction of its job. We lift the boards, lay the full depth and set a raised deck back on legs above it. The cavity walls of this era are narrow ones and plenty were filled years ago, and blown fibre that has slumped leaves a cold band along the top of the elevation, which shows up as a stripe of mould on an upstairs wall. A borescope answers it in minutes: clear, full, or part filled and settled. Where a loft here has been converted into a room in roof the work moves to rafter level, with a clear air gap above and a multi-layer quilt such as TLX where a sloping ceiling has no depth to give. Houses of this vintage often carry a light tile hung panel under the window, and that panel is usually the thinnest part of the whole wall, so it is worth opening up while other work is going on. Where a fill is not the answer, an internal wall lining is the alternative, and external wall insulation would change the face of the house.
How it runs
Topping up roofs and lining walls, step by step
Thomas visits first and does the pricing himself. He goes up into the loft, checks what depth is there now and whether the eaves are clear, and looks at the walls, because most Merley houses from the seventies and early eighties were built with a cavity that may or may not have been filled since. The quote lists the material, the depth or thickness, ventilation work and disposal separately.
The fitting follows that list. Loft work goes in through the hatch with dust sheets on the landing; bungalows in Merley have large, open roof spaces that are quick to lay but slow to reach into at the low eaves. Old insulation is bagged and taken away, and each room is left usable at the end of the day. If we find damp timbers, a bathroom fan blowing into the loft or damaged wiring, a photograph and a price come to you before we carry on.
Insulating a loft or lining a wall inside is permitted development, and Planning Portal guidance on insulation explains where that stops. Building control comes in when a thermal element is renovated or the loft becomes a room, and BCP Council is the authority. No conservation area covers the estates (the ward's two are Oakley Lane and Canford Magna), and the council lists them; the council's listed building records confirm an individual address. Insulation fitted in an existing home is zero rated for VAT under HMRC Notice 708/6.
Cost
Hatches, eaves and old material move the price
Insulation in Merley has no sensible rate per square metre. The area is easy; everything round the edges is where the time goes.
The roof shape. A bungalow with a big open ceiling and a landing hatch is quick. A detached house with a hipped trussed roof closes down at the corners, and getting the full depth into those is slow.
What is there now. Old, compressed mineral wool may be topped up or may need to come out, be bagged and taken away first. Boarding has to be lifted and relaid, or raised on legs so the insulation isn't squashed. Stored boxes have to come down and go back up.
Walls. An empty cavity can be filled from outside quickly. A cavity filled years ago that has got wet, or a solid wall, is a very different job, and a borescope check settles which you have.
Ventilation. Clear eaves, trays at the eaves and a working extractor keep the roof dry once it is colder. Approved Document L sets what the insulation has to reach, and Approved Document F covers the ventilation.
Before you pick a quote, check what depth is going in, whether old material comes out, whether the eaves are kept clear, and whether the hatch is insulated and draughtstripped.
If it is urgent
Condensation, mould or a room that never warms up
A loft dripping with condensation, black mould that comes back on a bedroom ceiling, or a room that will not hold heat is worth acting on before winter, because damp timbers and plaster cost more to put right than the insulation.
Open the trickle vents, run the extractor, and keep the loft hatch shut. Then ring us. The first visit works out whether the cause is missing insulation, blocked ventilation or both, because packing insulation into a space that cannot breathe makes things worse. Scheduled work runs Monday to Friday, 8am to 6pm. A call we miss is returned as soon as we are free.
Worth knowing
The whole of Merley is the same age, and that cuts both ways
Merley did not grow slowly. Around half of everything here went up in the nineteen seventies and early eighties, and the great bulk of the rest is post-war, which means whole roads were built by the same builders, to the same drawing, within a season or two of each other. For insulation that is unusually helpful.
The loft you are standing under is very likely built the same way as the one next door: the same truss, the same shallow ceiling tie, the same eaves detail, the same cavity width and the same original layer of quilt. On an estate built to one specification, the survey is usually confirming what the age of the house suggests, not discovering it.
The other edge of that is that the mistakes are shared too. If a run of houses had the cavity filled in one scheme by one installer, and that fill has settled, it has usually settled in all of them. If a road boarded its lofts in the same decade, the quilt underneath is crushed in the same decade. And a whole cohort of roofs reaches the same age at the same time, so eaves that were closed up when the soffits were replaced tend to have been closed up along the entire street.
On a Merley estate house, ask a neighbour what was found in theirs, because it is a better clue here than almost anywhere. But do not take a neighbour's price as yours, because what decides the cost is what has been done to your house since, and that is where these houses stopped being identical.
Who you are dealing with
Insulation from a company with its details on record
Merley is 6.6 miles from the Boscombe base. We insulate homes in Merley, Canford Magna, Bearwood, Broadstone and Corfe Mullen across BH21, and BCP Council is the building control authority here.
Thomas Hannen owns the business, Bournemouth Roofing & Building Ltd, registered in England and Wales, company number 15471719, and he goes up into your loft himself to price the job. On Checkatrade there is a 10 out of 10 from a verified customer. The visit costs nothing, and the itemised quote in writing is free. Before you book a visit in Merley, you can read our customers' Google reviews, word for word, on our reviews page.
Planning at a glance
Do you need planning permission in Merley?
Most repairs in Merley 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 Merley |
|---|---|
| Who decides | BCP Council is the planning authority for Merley. BCP Council's heritage pages set out what it controls. |
| Conservation area | The Merley estates are outside any conservation area. Oakley Lane and Canford Magna conservation areas lie nearby in the same ward, so check your address. |
| Listed buildings | Yes, there are listed buildings in and around Merley. If yours is one, work can need listed building consent. |
| Protected landscape | No National Park or National Landscape covers Merley. |
Questions
Questions about insulation in Merley
Why do so many lofts round here need the same thing?
Because the estate went up in one go. 77.0% of Merley was built between 1945 and 1982 and roughly half of it in the 1970s and early 1980s, so the lofts were done to the same standard within a few years of each other and they run out of performance together.
In houses of this age it is usually flattened wool between the joists and bare boards over the top of it. The fix is depth over the joists and proper work at the eaves.
Half the houses here are detached. Does that change the survey?
It changes what we look at outside. Detached houses are 49.0% of the stock in Merley, and a detached house has four cold elevations instead of two, so the survey takes in the gable ends and the room over the garage as well as the roof space. We measure existing depth in several spots, lift a board at the eaves, and establish whether the cavity has ever been filled. Then the quote covers what is genuinely missing.
The room over the garage never warms up. What is wrong?
The floor of it, most likely, rather than the walls. A room built over an unheated garage sits on a joisted deck with cold air underneath, and on the Merley houses that deck was rarely insulated when it went in. Heat drops straight out of the floor into the garage below. We fit insulation between those joists from the garage ceiling, which avoids lifting the bedroom floor, and seal the perimeter where the deck meets the outside wall.
Is radon something we should be thinking about here?
Only where you are converting or extending, not for insulation. Merley falls in a band where an estimated 3 to 5 per cent of homes are affected, which puts basic radon protection into the design of new floors and new rooms rather than into a loft top-up. Wool over a ceiling does not seal a house or alter what comes up out of the ground. If the roof space becomes a room, the conversion drawings handle it.
Canford School is listed. Does that touch the houses near it?
No, listing applies building by building. The area around Merley has 26 listed entries and they are things like Canford School and John Of Gaunt's Kitchen, not the postwar houses standing around them. Being near a listed building puts no control on your own roof space. The Merley estates are also outside a conservation area; the Oakley Lane and Canford Magna conservation areas in the same ward do not cover them. So unless your own address appears on the list, Bournemouth, Christchurch and Poole Council have no part in the job.
Nearby, and next door
Insulation near Merley
Nearby places we also cover for insulation, with straight-line distances from Merley, and the other trades we offer in Merley itself.
Insulation nearby
Our other trades in Merley
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 Broadstone Insulation, all areas Every area we cover
Free quote
Find out what your loft actually measures
A free site visit with a probe in the existing layer, and an itemised written quote that separates the depth, the ventilation and the disposal.