Draughtproofing and Insulation Priorities
Home energy improvements vary enormously in cost per unit of heat saved, and doing them in cost-effectiveness order rather than in order of visibility makes a substantial difference.
First: the cheap measures
Draughtproofing doors, windows, letterboxes and keyholes, using appropriate strips and brushes. Materials cost very little and the effect is immediate.
Sealing gaps around pipework and cabling penetrations, at floor edges, and around loft hatches.
Chimney balloons or caps for unused fireplaces, which lose a surprising amount of heat continuously.
Heavy curtains and closing them at dusk, which reduces heat loss through glazing at no running cost.
These typically pay for themselves within a heating season.
Second: loft insulation
Among the best value substantial measures where the existing depth is thin.
Topping up to the recommended depth is straightforward for a competent householder, with attention to keeping eaves ventilation clear and not insulating beneath the cold water tank.
Insulate and draughtproof the loft hatch itself, which is frequently omitted.
Where boarding is wanted for storage, raise the boards above the insulation rather than compressing it.
Third: controls and pipework
Insulating hot water pipes and the cylinder, which is cheap and reduces standing losses.
Thermostatic radiator valves allowing unused rooms to be kept cooler.
A programmable thermostat, and more importantly using it, since heating an empty house is the largest avoidable waste.
Later: the expensive measures
Cavity wall insulation, which is effective in suitable properties and problematic in exposed or defective ones. Assessment matters.
Solid wall insulation, which is expensive, disruptive and effective, and needs careful design to avoid trapping moisture.
Glazing replacement, which is expensive and where the payback is long. Secondary glazing is a fraction of the cost with much of the benefit.
Underfloor insulation, disruptive but valuable in properties with suspended timber floors.
Ventilation
Sealing a house without maintaining ventilation causes condensation and mould.
Retain and use extract ventilation, and keep trickle vents open. The aim is controlled ventilation, not no ventilation.
Grants and support schemes
Support for insulation and heating improvements exists in many jurisdictions, with eligibility based on income, benefits, property type or energy rating.
Schemes change frequently, so check current provision rather than relying on what was available previously.
Some measures must be installed by an approved contractor to qualify, which means checking before starting work rather than afterwards.
Measuring the effect
Compare energy use across comparable periods rather than consecutive months, since weather dominates short-term variation.
Degree-day data allows a fairer comparison between winters and is published publicly in many countries.
A simple record of annual consumption before and after is enough to tell whether the money achieved anything.
Article Was Generated By AI.