Loft insulation in Milford on Sea

Insulating a Milford on Sea ceiling does not just warm the rooms underneath. It takes the roof space out of the heated house and leaves it colder than it has ever been, and everything already up there has to be dealt with on the same visit.

The cold water tank and its pipework get lagging before we leave, because an unlagged tank in a loft that has just been properly insulated is a burst waiting for the first hard frost. Cables and wiring are lifted onto the insulation rather than buried beneath it. Recessed lights and downlighters in the ceiling below take fire rated covers so each fitting keeps its air gap instead of having wool heaped over it.

Then the depth itself, which is the straightforward part. Wool goes between the joists, then a second layer is cross laid over the joists so no timber is left showing to carry cold into the room below, and the two finish at about 270mm. Approved Document L sets that figure for a renovated loft. The open ground takes rolls, mineral wool in the form of glass wool or of rockwool. Batts fit the bays that truss bracing creates, loose fill reaches a shallow pitch, and sheep wool is there for anyone who wants it. The point of the whole exercise is the U value across your ceiling, since more heat leaves a house that way than by any other route, and it turns up on the heating bill long before it turns up on an EPC.

The eaves of a Milford on Sea loft are left alone on purpose. Insulation stops on the wall plate and the air gap above it stays open, held there by vent trays clipped between the rafters. Air enters at that gap and leaves under the ridge, faster where a ridge vent has been fitted. That crossing movement is the whole ventilation system on a roof whose underlay is bitumen felt rather than a breathable membrane. Warm a ceiling and the dew point moves up into the space above it, so a loft that was coping perfectly well can show condensation, wet material and black mould on the timbers within a season once the edges are stuffed.

Anything already laid in a Milford on Sea loft gets judged before anything new goes down. Wool contaminated where birds have got in and left droppings, wool missing for the last foot before the wall, wool settled to half its thickness or compressed under a deck, or wool gone patchy round old wiring, is bagged at the hatch and taken away with us instead of being sealed under the new work where interstitial damp gathers. Access is a single hatch, so crawl boards go down before anyone puts weight on a ceiling, and the job counts as work at height from the first rung of the ladder.

Last comes the way in and the way you use the space. Where things are stored, the deck is raised on legs so the depth beneath it is left alone and the loft ladder still reaches the platform. A rigid board and a seal on the hatch stop the last draught. Where a room has been built into the roof there is nothing to work on at floor level and the job goes in at the rafters instead. Board is fitted between them, the air path over it is kept open, a second layer runs beneath, and taped vapour control closes the room side. Multi-foil quilt is reserved for a sloping ceiling or a dormer cheek with no depth to give. Where the covering is coming off anyway, a warm roof over the deck is the better answer.

Loft work is priced on the edges and the access, not the floor area. Getting in. A seafront flat whose hatch opens off a shared landing, a bungalow with a wide open loft, and a detached house with boarding across the joists are different mornings. A hatch above a stairwell, or a loft you have to crawl across, adds time.

What is already there. Old material to bag and carry down, or boxes to move and put back, all come before anything new goes in. A trussed roof full of bracing is slower to fill than open joists.

Breathing. Salt air is damp air, and a loft this near the coast must ventilate. The eaves stay open and downlighters get covers. Approved Document L sets what the work should reach.

Wind. On the seaward side, gusts push in at the verge and eaves and can blow loose-fill back from the edges, which is why rolls are usually the better choice there. Eaves trays or baffles keep the gap open and stop the wind stripping warmth off the top of the insulation.

Ask other installers: what depth, in how many layers? Is the old material taken away? Are the eaves, hatch and pipework in the price?

Milford on Sea is 10.3 miles from Boscombe, where we are based. We insulate lofts through the village, Keyhaven, Hordle and the SO41 addresses towards Lymington; New Forest District Council oversees planning and building control there.

The company is Bournemouth Roofing & Building Ltd, registered in England and Wales, company number 15471719. Its owner is Thomas Hannen, who climbs into your loft and prices the job himself. We have a verified 10 out of 10 from a customer on Checkatrade. The visit is free, and so is the quote, written and itemised. Before you book a visit in Milford on Sea, you can read our customers' Google reviews, word for word, on our reviews page.

Most repairs in Milford on Sea 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.