Weatherization near you

Schedule 1 to the Housing Health and Safety Rating System (England) Regulations 2005 lists 29 hazards that councils assess in residential property. Hazard 1 is damp and mould growth, described as exposure to house dust mites, damp, mould or fungal growths. Hazard 2 is excess cold, described simply as exposure to low temperatures. Putting those two at the top of the list is not accidental: they are the two things a British house most reliably produces when its fabric is failing, and they are linked, because a cold surface is where moisture condenses.

For a rented home that matters directly, because a council can assess the hazard and act on it. For an owner-occupier it is more useful as a framing device: the purpose of weatherproofing work is to remove those two hazards from your house, and any specification that improves one while worsening the other has not succeeded. Sealing and insulating a house without addressing ventilation is precisely that trade.

Regulation 4(3) of the Building Regulations 2010 makes the same point in the language of building control. Where a building is extended or materially altered, the work must leave it complying with the applicable requirements of Schedule 1 or, where it did not comply already, no more unsatisfactory in relation to that requirement than before. The minimum energy efficiency standard that applies to privately rented homes, and the funding schemes that pay for this work for eligible households, are covered in the insulation contractors guide rather than repeated here.

Start outside and at the top. Blocked gutters, split downpipes and gullies backing up against a wall put more water into British masonry than driving rain does, and they are cheap to fix. Then the roof: slipped or missing coverings, failed flashings at abutments and chimneys, and anything letting water into the loft. Then the walls at ground level, where splashback, raised external ground levels and bridged damp-proof courses do their damage quietly over years.

Only once water is under control does air work make sense, and only once air work is specified does the ventilation question get answered. That order is the same one the retrofit standards use: assess the whole dwelling, decide the package, then install. Doing it the other way round produces the classic British result of a warmer, tighter, mouldier house.

Insulation comes last in the sequence and first in most people's minds, which is why it is worth saying explicitly. The loft is usually the best return for the disruption, walls are the bigger prize and the bigger commitment, and floors are the job people regret leaving until after a new floor covering has been laid. Where a thermal element is being renovated or replaced on a significant scale, regulation 23 of the Building Regulations 2010 brings its own energy efficiency requirement with it.

Autumn is when this work should happen and rarely does. Gutters need clearing after the leaves have actually fallen, which in most of Britain means late autumn rather than early; roof repairs need dry days that get scarcer as the season goes on; and anything involving a scaffold gets harder to book once the first storms arrive. Work booked in September is cheaper and more likely to happen than the same work needed in January.

Freezing is the risk that turns a maintenance job into an insurance claim. The Water Supply (Water Fittings) Regulations 1999 approach this directly for buried pipework: Schedule 2 requires that any water fitting laid below ground level has a depth of cover sufficient to prevent water freezing in it. The same schedule requires fittings to be constructed of materials of such strength and thickness as to resist damage from any external load, vibration, stress or settlement, pressure surges or temperature fluctuation. The principle above ground is the same one: pipework outside the heated envelope needs either insulation or heat, and preferably both.

In practice the vulnerable runs in a British house are predictable. Pipes in a cold loft above the insulation, pipes in an unheated garage or outbuilding, the supply to an outside tap, condensate pipes from a condensing boiler that run outdoors, and anything in a sub-floor void that is well ventilated and therefore cold. Those are the places to check before the forecast turns, not after.

Because this is a package rather than one measure, quotations vary with what is inside it. The main variables are the condition of the roof and rainwater goods before anything starts, the number of trades involved and whether they are coordinated or booked separately, access and scaffolding, how much insulation is being added and to which elements, whether ventilation is being upgraded as part of the same job, how much pipework sits outside the heated envelope, and whether the work is scheduled in autumn or bought urgently in the middle of a cold snap. Emergency work in January is the most expensive version of every item on the list.

LokalMatch's part is the introduction and nothing beyond it. Describe the house and the list of things you want dealt with before winter, give your postcode, and firms covering your area respond directly to you. Homeowners pay nothing to use it; the pros pay for the enquiries they receive. LokalMatch does not do any of the work, does not set or influence prices, and does not vet, rank or recommend the businesses that get in touch, so checking insurance, references and what each quotation leaves out is on you.