Wall insulation in East Boldre

The survey settles it. On an East Boldre house, reveal depth gives a first opinion and the borescope gives the fact. One hole in a mortar joint shows whether there is a cavity, how wide, whether it is clear or bridged with mortar, whether it is a wet cavity, and whether it was filled years ago and has slumped. Ten minutes, and it decides the whole quote.

Cavity fill. In East Boldre, bonded bead is blown in with adhesive for a narrow, awkward or exposed cavity. Blown mineral wool where the gap is wide, clean and sheltered. Drilled on a grid from outside, filled, holes pointed to match. Of everything on this page it is the shortest payback and the biggest single cut in heat loss, and Part L sets what the finished wall should reach.

Cavities we will not fill. Under about 50mm, full of rubble, already wet, bridged by mortar, or with no cavity trays over the openings. On an exposed forest edge elevation in East Boldre we would rather leave a marginal cavity open than hand penetrating damp a route to the inner leaf.

Single skin walls and converted outbuildings. An East Boldre stable, cart shed or workshop turned into living space usually has a half brick or block wall with no cavity and no damp course. That wall cannot be filled and should not be lined tight. It wants a stud or batten frame set clear of the masonry, mineral wool between, a vapour control layer taped, and the wall behind left able to dry.

Internal wall insulation on a solid wall. Insulated plasterboard, PIR such as Celotex or Kingspan where the wall is sound and modern, wood fibre and lime where it is old and must stay breathable. IWI is the cheaper and less disruptive of the two solid wall routes but it loses you 60 to 100mm a wall and leaves the joist ends cold unless they are detailed.

External wall insulation. EWI board fixed and bonded to the outside, mesh and basecoat, then a silicone topcoat or a render carrier and a finish to suit. It gives the best U value, keeps your room sizes and kills the thermal bridge at the eaves, but in the National Park the appearance is the first question, not the last.

Reveals, thresholds and junctions. A reveal too shallow for a normal board takes an aerogel laminate. The floor junction runs down behind the skirting, the threshold is detailed so the door still shuts, and the eaves are closed without blocking the ventilation path. Miss these and the condensation simply relocates to whatever you left cold.

Air and moisture. Better airtightness without ventilation is a swap, not a gain. Trickle vents, extract fans that work, air bricks left clear, to the rates in Approved Document F. Where a wall has already failed, with fill slumped or wet, the fill has to come out and the wall dry before anyone talks about starting again.

The first thing Thomas establishes is which wall you have. A cavity wall gets one small drilled hole and a look through a borescope, and a solid wall gets a damp check and a talk about how each room is used. The quote then prices the survey, the chosen system at its thickness, rebuilding the reveals round windows and doors, any extra ventilation, and the waste. A cavity fill, where it suits, needs a registered installer and a CIGA certificate.

A clear, dry cavity is filled from outside, usually from a ladder or tower on an open plot. A solid wall is lined from inside, one room at a time, taking off and refitting sockets and skirtings and rebuilding the reveals. A converted outbuilding may need a full lining with a vapour control layer. On an exposed wall facing the open forest the outer face is checked first, because fill behind a wet face can carry damp across. Rooms are sheeted, dust kept down, and waste leaves with us. Anything unexpected is photographed and priced before it is dealt with.

Planning here sits with the NPA, not the district council, and anything that alters the outside face of a wall is likely to need an application. The Authority's interactive property map will show whether a conservation area or anything else covers your address, and its heritage and conservation pages explain the rest. Insulating on the inside is not development, although building control has a say under regulation 23 when more than half of a wall is being renovated.

If black mould or wet patches have shown up on an outside wall since it was filled or lined, ring about it; the form is too slow. Air the room and wipe the mould back in the meantime.

The usual causes are rain bridging the cavity through the fill, or a cold spot at a junction where warm indoor air condenses. We examine both faces of the wall on the first visit before anything is removed. Two photos, one outside and one of the damp patch inside, taken on the same wet day, tell us a great deal. Planned work runs Monday to Friday, 8am to 6pm. If we cannot take the call, we ring you back as soon as we can.

Call now: 07435 839745

Planning here runs through the New Forest National Park Authority rather than the district, and the whole of this part of East Boldre sits in a conservation area. For wall insulation that has one blunt consequence: external wall insulation changes the look, the depth of the reveals and the overhang at the eaves, so it is an application rather than a decision you make on your own. Check your own address on the Authority's property map before you plan anything.

It is not automatically refused. A rear elevation that nothing overlooks is a very different case from a frontage on the lane, and a finish that reads as render on a house that is already rendered gets a warmer reception than a modern panel look on a brick and timber cottage. What tends to fail is the detailing rather than the principle: windows sunk into deep clumsy reveals, an eaves overhang that no longer throws water clear, and a topcoat that shines.

Where the outside is out of reach, the work goes inside and breathability matters more. On the older cottages that means wood fibre and lime rather than a foil faced board, and it means spending the money on the two coldest rooms properly, not on every room thinly.

Nearby places we also cover for wall insulation, with straight-line distances from East Boldre, and the other trades we offer in East Boldre itself.

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