Insulation in Crossways
Loft top ups, boarded lofts raised properly and rafter work in the converted roofs, with the ventilation checked before any depth goes down.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
Last updated
Crossways is one of the easier places on our patch to insulate properly, because almost everything here is a house with a real loft you can get into and stand a ladder under. The work is usually a top up, not a first fit: lift the boarding, find out what depth is genuinely under it, and bring the whole ceiling up to a sensible thickness with the eaves kept clear.
Crossways houses tend to be cold over the garage and thin under the loft boards. A house that was warm enough when heating was cheap and now clearly is not, with the bedrooms above an unheated garage or a porch the worst of it. And a loft somebody has boarded out over the years, where the insulation has been squashed flat under chipboard and nobody has looked at it since.
A third is simpler: you have just moved in to Crossways and want to know what you have bought. That is a fair question and it is exactly what a survey is for. We get into the roof space, measure the depth in several places, look at the eaves, the hatch and the pipework, and check whether the walls are solid or cavity. Free site visit, free written itemised quote, and no pressure to do all of it at once.
The work
The depth changes from one street to the next
Knowing what you already have. The houses in Crossways are not all the same age and the depth in the loft varies enormously between one street and the next.
Much of the stock went up between 1945 and 1982 and a lot more between 1983 and 2008, so a 1970s house was built with an inch or two while a 1990s house has more, often still less than today's figure and frequently buried under boarding. We measure and never assume, because the honest answer on a newer house is sometimes that the roof is fine and the money is better spent on draughts, the hatch and the pipework.
Loft top ups. Mineral wool goes down in two layers, the first between the joists and the second across them at right angles, so no joist runs as a cold bridge through the middle of the ceiling. Full depth is around 250 to 270mm and takes the ceiling close to the 0.16 u-value expected under a pitched roof. Whatever is up there already usually stays, because settled, compressed wool is still doing a job and counts towards the total. Boarding screwed straight to the joists caps that depth, so loft legs raise it clear and your storage comes back at the new height.
Where an attic has been converted, or a chalet was built with rooms in the roof, the cold surface is the sloping ceiling. Rigid PIR board is cut tight between and under the rafters and the joints taped, or a multi-layer foil quilt where the headroom will not stand board, with an air gap kept above unless the covering is coming off and a proper warm roof is on the table. The dead triangles behind the knee walls are where the heat really goes and they get done too.
Most of the stock here has a cavity wall, so the first question is whether it has already been filled and the second is whether the fill has slumped or bridged, which is a borescope check that takes minutes. The older places out towards the lanes have solid walls with no cavity at all, and those are lined on the inside or insulated outside. Then vent trays at the eaves so the wool is not blocking the air path into the roof, because a well insulated ceiling makes the loft above it colder and that roof has to breathe, and Approved Document F is the standard there.
How it runs
Bringing a seventies house up to a warmer standard
Thomas visits and checks the whole house in person: loft, walls, floors and ventilation. He prices it there, and the written quote has lines for the survey, clearing out, material and depth, ventilation works, and disposal.
Crossways is a mix: about a third was built between the war and 1982 and nearly as much from 1983 to 2008, so loft depth varies from street to street. So the work here is usually topping the loft up to full depth, filling or checking the cavity, and dealing with a flat roofed garage or extension. Bungalows have a big loft for their size, which makes the loft the obvious place to start. We sheet the landing and stairs, bag the old material where it lies, and take it all away. We clean up before leaving. Should we find damp timber, a roof leak or wiring that needs an electrician, Thomas shows you what he found and what it would cost before anything else happens.
A loft or an internal lining needs no permission, and Crossways has no conservation area, though a listed house would be different. Insulation on the outside of a wall changes the look of the house, and Planning Portal guidance on external walls explains where that sits. Regulation 23 of the Building Regulations sets what renovated insulation must reach. If the loft is becoming a room you plan to let, ask Dorset Council whether the Poole Harbour nutrient rules apply.
Cost
Roof, cavity or both: what the insulation price depends on
Insulation in Crossways has no single rate, because a loft top up, a cavity fill and a room in the roof are different jobs.
The loft. A seventies detached house with a hatch on the landing, a bungalow with its whole floor beneath a single roof, and a newer house with a room already built into the roof are three different jobs even when the plans look similar. Old material to bag and take away, stored things to move and put back, and eaves that must stay clear all come first.
The cavity. Whether the walls can be filled depends on the cavity being clear and dry, and on how exposed the wall is to driven rain. A borescope check settles it before any quote for cavity fill.
The garage and extension roofs. A flat roof can only be insulated properly when it is re-covered, so it is priced with the roof rather than as an extra. The work at height rules decide the platform for any outside work.
The standard. Approved Document L is the benchmark, and a thin specification that falls short is not a saving.
Ask competing firms to state the depth to be laid, whether old material comes out or stays, and whether the hatch and pipework are in the price.
If it is urgent
A cold room, a damp corner or mould coming back
Dripping condensation in the loft, mould that returns however often you clean it, or a room that never warms up should be checked before winter. More insulation in a roof space that cannot breathe only makes things worse, so hold off until it has been checked.
Keep bathroom and kitchen doors shut while they are steamy and check that the extractor fans run. On many seventies houses a cold corner is where the loft insulation stops short of the eaves. At the first visit we find out which it is: poor ventilation, a leak, or insulation with gaps in it. We do booked work Monday to Friday, 8am to 6pm. If rain is getting in, telephone and leave the form for later, and if there is no reply, we call back as soon as we can.
The one local thing
No conservation area, and what that frees up
A village with no conservation area is rarer on our patch than you would think. Crossways has no conservation area, which means appearance is not controlled here the way it is in the villages a few miles up the road, unless your own house is on the Historic England list.
For insulation that matters for one job in particular. Insulating the outside of a wall is the option that gets ruled out in a heritage village, because it thickens the wall, buries the reveals and changes the finish.
Here you are not on the designated land where the permitted development right to clad a house is withdrawn, so external wall insulation is normally judged on whether the finished appearance is similar to what was there and on the building control standard it has to reach, rather than on whether it suits a historic street. Planning Portal guidance on insulation sets out the general position and Dorset Council will confirm it for your address in writing, which is worth having before you spend anything.
Some limits still apply in Crossways. Flats and maisonettes have no permitted development rights at all, so if you are in one, the freeholder and the council both come into it whatever the street looks like. And a free hand is not the same as a good idea: external insulation is the most expensive way to warm a house and it only makes sense once the cheap work is done.
On the stock here that order is nearly always the same. Get the loft to full depth. Seal the hatch and the obvious draughts. Find out whether the cavity is filled properly. Then, if the house is still not holding heat, look at the walls with a proper heat loss figure in front of you rather than a salesman's brochure.
Who you are dealing with
Insulation looked at and priced by the owner
Crossways is 21.8 miles from our Boscombe base, and we insulate homes in the village and around it, in Woodsford, Moreton, Warmwell, Owermoigne and Broadmayne. Dorset Council is the building control authority. Our company, Bournemouth Roofing & Building Ltd, is registered in England and Wales with the number 15471719, and it belongs to Thomas Hannen. Before you book a visit in Crossways, you can read our customers' Google reviews, word for word, on our reviews page.
He is the one who goes up into your loft and prices the work. Checkatrade lists a verified customer's rating of 10 out of 10. We make no charge for the survey visit or for your written quote, which sets out each item.
Planning at a glance
Do you need planning permission in Crossways?
Most repairs in Crossways 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 Crossways |
|---|---|
| Who decides | Dorset Council is the planning authority for Crossways. Dorset Council's heritage pages set out what it controls. |
| Conservation area | None covers Crossways, so a like-for-like repair is ordinary maintenance. |
| Listed buildings | Nothing in Crossways is on the statutory list, so listed building consent does not come into it. |
| Protected landscape | No National Park or National Landscape covers Crossways. |
Questions
Questions about insulation in Crossways
There is no conservation area in Crossways. Does that make life easier?
Yes, having no conservation area makes life easier, and it is unusual on this patch. Crossways has no conservation area, so unless the Historic England list says otherwise for your address, what goes on the outside of your roof is your decision under ordinary permitted development, not something Dorset Council have to approve on appearance grounds. That keeps external wall insulation, rooflights and a change of covering on the table from the start.
Is a newer Crossways house already up to standard?
Not to today's standard, no: many homes in Crossways were built between 1983 and 2008, and the depth expected in a loft has gone up more than once since then. What you usually find is one layer sitting between the joists and the joists themselves left bare. Adding a cross layer over the top is quick work and the cheapest gain in the house.
We are adding a room. Anything unusual about Crossways?
One thing catches people out. Crossways sits in the Poole Harbour nutrient catchment, and that engages on schemes which add overnight accommodation, so a new dwelling, a self-contained annexe or a holiday let brings a nutrient requirement with it, while a re-roof, a loft top up or an extra bedroom in your own house normally does not. With no conservation area, heritage rarely applies here, so the nutrient position is usually the only planning hurdle worth checking before you draw anything up.
How much dust comes down into the rooms below?
Less than you would think, because the material goes up sealed and gets opened in the loft. What does come down is whatever has been lying on your ceiling since the 1970s, which is why we sheet the landing and the stair and bag the old stuff at the hatch. In a bungalow everything comes down through one opening, so that route gets protected properly.
Is this a one day job or longer?
A standard loft in Crossways is a day, sometimes half of one if it is only a top up over existing quilt. Two storey detached houses with a lot of ceiling area can run into a second day. Internal wall lining is measured in rooms rather than days. We put the expected duration on the quote so it is not a surprise.
Nearby, and next door
Insulation near Crossways
Nearby places we also cover for insulation, with straight-line distances from Crossways, and the other trades we offer in Crossways itself.
Insulation nearby
Our other trades in Crossways
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 Wareham Insulation, all areas Every area we cover
Free quote
Find out what depth is actually up there
A free site visit, the loft measured and the eaves checked, and a written itemised quote for the work that is worth the money.