Loft insulation in Owermoigne
Two layers over the ceiling, the eaves left to breathe, and an itemised written price before anything is ordered.
The site visit is free and so is the written itemised quote. Thomas Hannen prices every job himself.
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An Owermoigne loft usually needs topping up to 270mm, most often in mineral wool, though there is no single right material. Roll, batt, loose fill and rigid board each solve a different problem, chosen by the shape of your roof. Whatever goes in, the eaves stay clear, the boarded area is raised on legs, and the tank is jacketed. Walls and floors are on our Owermoigne insulation page.
In Owermoigne it usually starts with how the house feels. Rooms that never quite get warm, with a heating bill saying the same thing. A loft that plainly has too little in it, thin and uneven with bare timber showing along the edges. Or damp, which out in Owermoigne usually means mould on the underside of the roof or a musty smell the moment the hatch comes down.
Houses in Owermoigne are a mixture of old and recent and the roofs vary enormously, so nobody should be quoting this from a doorstep. We come and look. Depth taken at several points, a hand past the wall plate to test whether the air can still move, a note of what is stored up there and what services cross the ceiling, and photographs of the lot. Both the site visit and the written itemised quote are free.
Inside the roof
Picking the material for the loft you actually have
Mineral wool suits most Owermoigne lofts, and it comes as roll or as batts. Glass wool roll is the cheapest way to cover a clear run of regular joists, and it is what goes down when a trussed roof gives you a straight line to work along.
Rockwool batts are stiffer, cut cleanly and hold their shape, which is what you want in an older cut roof where the joists were sawn by hand and no two bays are the same width. Loose fill, poured and levelled, gets into places neither will lie flat in: bracing that boxes a corner in, the space behind a chimney breast, the last strip where a shallow roof runs out of headroom. Sheep wool does the same job as glass wool if you would rather have a natural fibre in the house. None of these is better than the others in the abstract. They are answers to different shapes.
Whichever it is, it goes on in two layers running in two directions, and that part is not negotiable. The first sits between the joists, friction fitted so there is nothing open at the timber. The second is cross laid over the joists at right angles, burying them so they stop conducting heat down into the ceiling. Roughly 270mm all in is the depth a renovated ceiling is expected to reach under Part L in Approved Document L. Whatever is already there gets read before any of it is laid: settled, patchy, compressed under boxes and missing along one wall is the usual picture, and if it is dry it stays as the base. Damp material, material that has broken down to dust and anything contaminated with droppings is bagged in the loft and carried out to the van.
Rigid board is the exception to all of the above, and it belongs at rafter level rather than on the floor. Where an Owermoigne roof has already been made into a room in roof, with a sloping ceiling, dormer cheeks and cupboards behind the knee walls, wool on a floor is no use to you. That is a warm roof: PIR rigid board such as Celotex cut tight between the rafters with an air gap kept above it under the felt, a second layer beneath them, taped joints and a vapour control layer so moisture cannot get behind the plasterboard, and multi-foil quilt in the shallowest corners. It is slower and it wants doing properly, because a sealed slope built badly hides its condensation inside the structure where you will not find it for years.
The rest is the same on every Owermoigne loft and it is the part that gets rushed. Material runs out over the wall plate and stops, with a vent tray at every rafter keeping the air gap open so cross ventilation still crosses the roof; block that and the dew point moves into the layer, interstitial condensation forms, water gathers on the underside of the felt and black mould follows on the rafters. A ridge vent or tile vents take over where the eaves are boxed in, and a breathable membrane changes the detail rather than the requirement. Fire rated covers go over recessed lights and downlighters, cable and wiring come up above the new layer instead of being buried, the cold water tank and its pipework get lagging, the hatch takes a board and a draught seal, and storage goes back on loft legs so the boarding and the platform sit clear of full depth with the loft ladder reset to match.
How it runs
Two layers of loft insulation, laid properly
Thomas climbs into your Owermoigne loft himself and checks how deep and how sound the existing insulation is, eaves ventilation, the hatch, and the pipes and tanks. The quote itemises the survey, bagging and removing what is there, the new mineral wool and its depth, eaves ventilation, the hatch and pipework, and disposal.
Mineral wool goes in two layers, one laid between the joists and a second rolled across them at right angles, so there are no gaps. Eaves trays keep the air moving above it. The hatch is insulated and draught stripped, and the pipes and tanks left in the cold are lagged. Dust sheets go on the landing and stairs, and old material is bagged and carried out. Because we are 22 miles away, we bring enough for the whole loft in one trip. Signs of a roof leak, such as stained timber, are photographed and priced separately, and you choose.
Insulating an Owermoigne loft is not development, so nothing is applied for and no permitted development right comes into it, as Planning Portal guidance on insulation confirms. Building control is Dorset Council, and the standard is set by Approved Document L. If the house is listed, listed building consent reaches internal work as well. The conservation area over the village's historic core only matters if new vents would change how a roof looks. HMRC guidance covers the VAT on insulation.
Cost
Small hatches and low eaves slow a loft down
Floor area is a poor guide to a loft price. The middle is quick, and the edges and the access eat the time.
Getting up there. A small trap over a cottage cupboard, a farmhouse roof you can stand up in and a shallow trussed loft on a newer house each set the day up differently. A ladder into a stairwell hatch, or a crawl space at the edges, adds time before anything is laid, and so does boarding that has to be lifted.
What is already there. Old material may have to be bagged and removed, and stored boxes moved out and back. Joists at 400 centres with nothing in the way go down quickly, a trussed roof full of bracing does not, and in an older roof the joists can be irregular, which takes more care.
The awkward edges. The insulation is stopped short at the wall plate so the eaves stay open for ventilation, or the roof timbers get wet. Reaching full depth in the corners, round the hatch and over downlighters, and lagging the tanks and pipework left out in the cold above it, is where the labour goes. The depth to reach is set by Approved Document L.
When comparing, ask what depth goes down and in how many layers, whether the old material comes out, how the eaves stay ventilated, and if the hatch and pipes are covered.
If the loft is wet
A damp loft, drips on the felt or mould on the timbers
Water beading under the felt, black mould on the rafters or insulation that feels wet to the touch all tell you moist air from the house is getting up there and cannot get out. Left alone, it rots the timbers. Pick up the phone.
On the first visit we look at the vents at the eaves, the hatch, and any extractor that blows into the loft, and track down the cause before adding any insulation, because extra insulation in a loft with no airflow makes the damp worse. Booked loft work runs Monday to Friday, 8am to 6pm. Where it is urgent, calling beats the form, and if we cannot pick up, we phone you back as soon as we are able.
Two different projects
Insulating a loft and converting one are not the same decision
The two are easy to run together, and it is worth separating them. Laying insulation over a ceiling is inside work on an existing element. It needs nobody's permission, it changes nothing anyone can see, and it is done in a day or so.
Turning the space into a room is a building project: floor structure, stairs, escape, fire separation, headroom and the whole roof rebuilt thermally at rafter level, all of it under building control, with regulation 23 pulling the element up to current standard once you renovate enough of it.
There is one more difference that catches people out locally. This parish drains to Poole Harbour, which is a protected catchment, and schemes that add overnight accommodation there have to deal with nutrient neutrality before they get consent. That reaches a new dwelling, an annexe or a holiday let, and not normally a bedroom added to your own house. It does not reach insulation laid over your existing ceiling, or a re-covering of the roof, because neither adds a place for anybody to sleep. So if the loft is cold and a conversion is a someday idea, the two are not in a queue behind each other: insulate now, and none of it is wasted when the bigger job eventually comes round.
Who you are dealing with
Loft insulation in Owermoigne and the villages nearby
From Boscombe we travel 22 miles to Owermoigne, and we insulate lofts in the village, Crossways, Winfrith Newburgh, West Lulworth, Wool and the DT2 addresses around them, with Dorset Council for building control. Thomas Hannen, whose business it is, climbs into the loft himself and prices it on what he finds.
Our registered name is Bournemouth Roofing & Building Ltd, company number 15471719, in England and Wales, and a verified customer left us 10 out of 10 on Checkatrade. The visit, and the written quote with each item listed, cost you nothing. Before you book a visit in Owermoigne, you can read our customers' Google reviews, word for word, on our reviews page.
Planning at a glance
Do you need planning permission in Owermoigne?
Most repairs in Owermoigne 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 Owermoigne |
|---|---|
| Who decides | Dorset Council is the planning authority for Owermoigne. Dorset Council's heritage pages set out what it controls. |
| Conservation area | Yes: Owermoigne Conservation Area. Check whether your street is inside the boundary before changing anything visible. |
| Listed buildings | Yes, there are listed buildings in and around Owermoigne. If yours is one, work can need listed building consent. |
| Protected landscape | No National Park or National Landscape covers Owermoigne. |
Questions
Questions asked in Owermoigne
Is loose fill worse than rolls?
No, loose fill is just different, and suits a loft where bracing or awkward joist spacing means a roll cannot be opened out flat, and it fills round obstructions better than anything. It does not stay put well where the roof is draughty, and it is a nuisance to lift if a cable has to be chased. Plenty of lofts in Owermoigne end up with both, roll across the open floor and loose fill in the corners.
We want a conversion in a couple of years. Should we wait?
No, insulating the ceiling now costs a fraction of the conversion and stops you paying to heat the roof in the meantime. When the conversion happens the insulation moves up to the rafters, and wool off the floor can often be reused in the walls or the flat areas behind the knee walls. Nothing about doing it now makes the later job harder.
Our loft smells musty when we open the hatch. Is that serious?
It is worth looking at quickly. A musty smell means moisture is sitting in the space, and left alone it ends up in the timbers rather than in the wool. Usually the cause is a blocked eaves, a fan discharging into the roof, or a hatch with no seal on it, and all three are fixable. What you should not do is add depth on top and hope.
Do you take the old material away?
Yes, on the same day. It is bagged inside the loft rather than dropped through the hatch, carried down through sheeted rooms and loaded onto the van before we leave. Nothing is left in the garden and nothing goes in your bin.
Nearby, and next door
Loft insulation near Owermoigne
Nearby places we also cover for loft insulation, with straight-line distances from Owermoigne, and the other trades we offer in Owermoigne itself.
Loft insulation nearby
Our other trades in Owermoigne
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 Wareham Loft insulation, all areas Every area we cover
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Get the loft priced in writing
Thomas comes out, gets into the roof space and itemises what it needs. The visit and the quote are both free.