An Energy Performance Certificate (EPC) rates a home from A (most efficient) to G, and is required when a property is sold or let. Loft insulation is a “fabric” measure — it improves how well the building keeps heat in — and is usually one of the most cost-effective ways to nudge a rating upward.
In England and Wales the current rule (MEES) is that rented homes must be at least EPC E to be let. In January 2026 the government confirmed, as part of the Warm Homes Plan, that the minimum will rise to EPC C by 1 October 2030 for private rented homes, with a cost cap of £10,000 per property. A reformed EPC method that puts more weight on the building's fabric (insulation and windows) is also on the way.
Rules and dates are set by government and can change. Always check the current position on gov.uk and find your certificate on the official EPC register before making decisions.
Because the reformed system prioritises fabric performance, getting the loft up to 270mm is a sensible early step for any owner or landlord planning ahead — it's low-cost, low-disruption, and improvements made now can count toward future requirements. We'll assess what your roof needs and give you a clear, no-obligation quote.
Want a straight answer for your home? Book a free, no-obligation loft assessment and we'll give you honest advice and a clear quote within 24 hours.
A clear breakdown of what loft insulation costs in 2026, what affects the price, and how quickly it pays for itself.
The recommended loft insulation depth is 270mm. Here's why that figure matters, and whether you should top up or start fresh.
Insulation and ventilation go hand in hand. Get the balance wrong and you risk condensation, damp and mould in the roof.
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Older homes are charming but often draughty. Here's how to insulate an older loft without causing damp or losing headroom.