Loft insulation in Tarrant Monkton
Full depth over the ceiling where there is a loft to work in, and rigid board against the rafters where there is not, across Tarrant Monkton and DT11.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
Last updated
Where a Tarrant Monkton house has a loft floor, the answer is a top-up to 270mm of mineral wool, the eaves left open, boards raised on legs and the tank and pipes lagged. Plenty of roofs in the valley have no usable loft, though, and then the work goes against the slope instead, a different build up with a different price. Walls are on our Tarrant Monkton insulation page.
When to call
One village, two completely different roofs
In Tarrant Monkton the cottages go wrong one way and the newer houses another. In the old part it is a bedroom that never warms and a hatch the size of a tea tray, with nobody quite sure what is above it. Elsewhere it is a layer that went in years ago, has settled away to nothing at the edges, and is costing money every evening the heating runs.
Neither kind of Tarrant Monkton loft is a telephone price. We open the hatch, find out whether there is a floor to work on at all, put a rule through whatever is up there, feel along the wall plate for the air path and photograph the lot. The survey costs nothing and neither does the written quote, which separates the material, the depth or the build up, and anything that has to be carted away.
The work
Where there is a void, and where there is not
Where there is a floor to work on. The old layer in a Tarrant Monkton loft is pulled back apart, straightened, and left in place if it is dry. A second run of mineral wool then goes over the top of it at right angles to the joists, and that crossing run is what buries the timber and stops a ceiling handing its heat back in strips.
Roughly 270mm together is the depth a renovated ceiling needs to make the u value asked of it, which Approved Document L sets out. Glass wool on the roll where the bays run even, rockwool batts where hand cut joists wander in and out of line, and loose fill poured into the corners a roll will not sit down into.
Where there is not. Follow the ceiling of an old Tarrant Monkton cottage and it often runs straight up the rafters, or the space over it is too tight to get a shoulder into. Roll is no use in either. Rigid PIR board, Celotex or similar, gets cut to each bay and pushed up between the rafters with a clear air gap held above it, a second layer is fixed under the rafters to break the bridge through the timber, and the whole lot is closed with a taped vapour control layer so the dew point never lands anywhere it can wet the structure. That is a warm roof. Dormer cheeks and the flat top of a room in roof are handled the same way, and multi-foil quilt earns its keep where depth has simply run out.
The air comes first either way. The layer is stopped on the wall plate and never pushed past it, and a vent tray between each pair of rafters holds the gap above it open so ventilation still crosses the roof from soffit to soffit. A good many roofs in Tarrant Monkton carry no underlay at all and breathe by themselves. Where one has been recovered under a breathable membrane over boxed soffits, that path can already be shut, and you read it as condensation on the felt with black mould creeping over the rafter feet. A ridge vent goes in before any depth does, and BS 5250 is the code behind managing moisture in a building.
The ceiling below, and getting about on it. Old lath and plaster in a Tarrant Monkton cottage will not carry a knee, so nothing is stood on and we work off boards spanning the joists, outwards from the hatch. Where the void is too shallow to sit up in it becomes a crawl, and that is time spent before a packet is opened. Anything you have stored comes down first. Access is agreed on the survey, because a loft is still work at height even with a roof over your head.
The bits that get forgotten. Downlighters take a rated hood each. Cables are dressed over the new depth rather than left buried in it, because cable in insulation runs warm. The cold water tank and its pipework have just been moved to the cold side of the house, so lagging and a jacket go on and nothing is laid underneath the tank. The hatch is insulated on its back and sealed, the loft ladder checked against the new floor, and if you want storage the boarding goes back on loft legs above the wool rather than flat on the joists.
How it runs
What a loft insulation visit and fit involve
Thomas puts his head through the hatch, checks what is there and how deep it is, looks at whether the roof is venting, and writes the price himself.
The quote for a Tarrant Monkton loft covers the survey, clearing and bagging old material, the new rolls and their depth, keeping the eaves open, insulating the hatch, lagging the pipework and the tank, and disposal. In a cottage the hatch can be tiny and over the stairs, so a safe platform is set up on the landing before anything goes up.
Dust sheets go from the door to the hatch, the landing is hoovered when we finish, and old fibre leaves in sealed bags. If we find damp timbers or old wiring lying in the insulation, you get a photo and a separate figure before it is covered over.
Laying insulation across a Tarrant Monkton loft floor is not development, so there is no application to make, as Planning Portal guidance on insulation explains. Building control only comes in if the roof itself is being renovated, when regulation 23 brings the whole element up to standard. On a listed house, work inside the roof as well as outside it can need consent from Dorset Council first.
Cost
Why lofts of the same size take different days
Getting up there takes planning. A hatch above the stairs needs a safe platform built before anyone climbs. A roof so low you work on your knees is slow going, and in some Tarrant Monkton cottages there is barely a void at all. Each of those is time before the first roll goes down.
What is in the way. Stored boxes to move and put back, boarding to lift and relay, and old insulation to bag and carry through the house. A trussed roof with diagonal bracing is slower to lay into than open joists.
The edges. Insulation stops at the wall plate so air can still pass at the eaves. Getting full depth into the corners, around the hatch and over any downlighters, and wrapping pipes and the tank, takes more hours than the open floor. Approved Document L sets the depth the finished loft should reach.
Thatch or tile. Under a thatched roof the space is often partly lived in, or open to the underside of the thatch, and the approach changes.
Test any other quote against these questions. What depth, in how many layers? Is the old material coming out? How will the eaves and ventilation be kept clear?
If the loft is wet
Droplets on the felt, or mould on the rafters
Phone rather than filling in the form. Beads of water under the felt, black mould on the rafters, or insulation that feels damp all point to warm, wet air getting into a roof space with no way out. That needs sorting quickly, because the rafters and battens are what rot.
Before we come, make sure the bathroom and kitchen fans run and that none of them vent into the loft. On the first visit we find the cause before any more material goes in, since piling depth into a roof that cannot vent only traps more water. Scheduled work runs Monday to Friday, 8am to 6pm. Missed call? We ring straight back when we can.
Worth knowing
Inside the conservation area, it is the outside that is controlled
The village sits inside the Tarrant Valley conservation area, with a good many listed entries in and around it. For a loft the line is a simple one. What you do inside an unlisted roof is your business and what changes the outside of it is not. Insulation over the ceiling, a sealed hatch, boards on legs: none of it needs an application, though on a listed cottage rigid board against old rafters can need consent.
The awkward part is that the buildings with least room in the roof are often the ones with most control over them. If the answer to a cold room is a rooflight to reach the space, vent tiles across the slope or a dormer, that is a conservation area question, and on a listed building a consent question too, because listed building consent reaches work affecting the character of the building whether or not anybody outside can see it. So we plan from the inside out. Depth where there is a void, rafter level where there is not, ventilation at the eaves before anything goes through a slope, and a straight answer on what Dorset Council would want to see before you order anything.
Who you are dealing with
Who fits the insulation in your loft
We are fifteen miles away in Boscombe and cover Tarrant Monkton, Tarrant Hinton, Tarrant Keyneston, Pimperne, Blandford Forum and the DT11 addresses around them. Dorset Council is responsible for planning and building control. You deal with Bournemouth Roofing & Building Ltd, company number 15471719, registered in England and Wales. Before you book a visit in Tarrant Monkton, you can read our customers' Google reviews, word for word, on our reviews page.
It belongs to Thomas Hannen, who looks in the loft and prices it himself. There is a verified customer's 10 out of 10 for us on Checkatrade. The survey visit and the written, itemised quote are both free of charge.
Planning at a glance
Do you need planning permission in Tarrant Monkton?
Most repairs in Tarrant Monkton 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 Tarrant Monkton |
|---|---|
| Who decides | Dorset Council is the planning authority for Tarrant Monkton. Dorset Council's heritage pages set out what it controls. |
| Conservation area | Yes: Tarrant Valley Conservation Area (Tarrant Monkton). Check whether your street is inside the boundary before changing anything visible. |
| Listed buildings | Yes, there are listed buildings in and around Tarrant Monkton. If yours is one, work can need listed building consent. |
| Protected landscape | Inside the Cranborne Chase & West Wiltshire Downs National Landscape (formerly AONB), so anything visible from outside gets more attention. |
Questions
Questions about loft insulation in Tarrant Monkton
There is no hatch. Can you still insulate the roof?
Usually, but the honest answer depends on what is behind the ceiling. Sometimes a hatch can be formed neatly in a cupboard or on a landing and the space turns out to be perfectly workable. Sometimes the ceiling follows the rafters and there is no void at all, in which case the work goes against the roof from inside the room. We settle which of those you have on the survey, before anything is priced.
Is rafter level work worth it compared with a loft floor?
It costs more and it takes longer, because every piece is a fitted cut, not a rolled length. What it does is insulate a room you actually live in rather than a space you store boxes in. Where there is a usable void, the floor is far better value. Where there is not, rafter level is the only thing that will work.
Will insulating the sloping ceilings make them damp?
Not if the build up is right, and that is where the care goes. A continuous taped vapour control layer on the warm side keeps moist room air out of the construction, and a clear ventilated gap between the board and the underlay lets the roof dry. Get either wrong and the dew point lands inside the timber, which is the expensive version of this mistake.
How long does it take, and does it show on the bill?
A loft floor is half a day to a day. Rafter level work is longer and is planned room by room. Heat loss through the roof is one of the larger losses in a house either way, so it shows on the heating bill and on an EPC, and VAT on energy saving materials follows HMRC VAT Notice 708/6.
Nearby, and next door
Loft insulation near Tarrant Monkton
Nearby places we also cover for loft insulation, with straight-line distances from Tarrant Monkton, and the other trades we offer in Tarrant Monkton itself.
Loft insulation nearby
Our other trades in Tarrant Monkton
Loft insulation guides
Part L: do you have to insulate when you re-roof? Loft condensation or a roof leak: how to tell PIR board vs mineral wool: which insulation?Everything we do in Blandford Forum Loft insulation, all areas Every area we cover
Free quote
Get a price for your Tarrant Monkton loft
Tell us the address and whether you can get into the roof at all. We will come and find out properly, then put an itemised price in writing. No charge, no obligation.