Loft boarding in London costs £25–£40 per square metre in 2026 for standard boarding, or £35–£55 per square metre for raised boarding fitted on loft legs to protect the insulation beneath. A typical loft works out at £500–£1,500 boarded, depending on size, access and whether you add a loft ladder, hatch or lighting. This guide breaks down every element by price, explains why raised boarding matters, and clarifies where simple storage boarding ends and a building-regs loft conversion begins.
How much does loft boarding cost in London?
Standard loft boarding, fixing chipboard loft panels across the joists, costs £25–£40 per square metre supplied and fitted in 2026. For a typical London loft of 15–25 square metres of usable floor, that puts a basic boarding job at roughly £400–£900.
Raised boarding costs more, at £35–£55 per square metre, because it involves fitting plastic or timber loft legs to lift the boards above the insulation. The reason it is worth the extra is explained below, but in short it protects both your insulation and your stored belongings.
Add the optional extras, a loft ladder, an enlarged hatch and a light, and a complete, properly usable loft typically lands between £500 and £1,500. The spread comes down to the area boarded, the access into the loft, and how many of the extras you include. A small, easily accessed loft with boards alone sits at the bottom; a larger loft with raised boarding, a new ladder and lighting sits at the top.
Loft boarding element
Typical London cost (2026)
Standard boarding (per sqm)
£25 – £40
Raised boarding over insulation (per sqm)
£35 – £55
Loft ladder supplied & fitted
£150 – £350
Loft hatch enlargement
£200 – £450
Loft light (fitted)
£80 – £200
Typical complete loft
£500 – £1,500
Why raised boarding over insulation matters
It is tempting to save money by laying boards straight onto the joists, but on a modern loft this is usually a mistake. Current insulation depth is around 270mm, and most loft joists are far shallower than that, so the insulation already sits proud of the timber. Boarding straight onto the joists crushes that insulation flat.
Compressed insulation loses much of its thermal value, so you trade a warmer home for a bit of storage, and the squashed wool can no longer breathe, which raises the condensation risk in the loft.
Raised boarding solves both problems. Plastic loft legs, sometimes called loft stilts, are fixed to the joists to lift a new timber or board frame above the full depth of the insulation, leaving an air gap so the insulation stays uncrushed and the loft stays ventilated. At £35–£55 per square metre it costs a little more than crushing the insulation flat, but it keeps your home's thermal performance intact, which is why we fit raised boarding as standard wherever the insulation depth calls for it.
Loft ladders, hatches and lighting
Boarding a loft is only half the job; you also need to get up there safely and see what you are doing. A loft ladder supplied and fitted costs £150–£350, depending on whether it is a basic aluminium concertina ladder or a sturdier sliding timber type, and on the height of the drop.
Many older loft hatches are too small to pass boxes or furniture through, or even to climb through comfortably. Enlarging the hatch, which involves trimming around a joist and fitting a new lining and door, costs £200–£450 and makes a real difference to how usable the space is.
A loft light is inexpensive and transformative; fitting a switched light, ideally on a sensor or a switch at the hatch, costs £80–£200 depending on the existing wiring. Done together with the boarding, these extras are far cheaper than commissioning each separately later, because the loft is already set up and the access is in place.
What does a typical loft boarding project cost?
Bringing the elements together, a typical London loft boarding project costs £500–£1,500. At the lower end, a small, accessible loft with standard boarding over a modest area and no extras sits around £500–£700.
A mid-range job, raised boarding across a usable 20 square metre area to protect the insulation, plus a loft light, lands around £900–£1,200. A fuller package, raised boarding, a new loft ladder, an enlarged hatch and lighting, reaches £1,300–£1,500.
The biggest single factor after area is whether you choose raised boarding, followed by how much access work is needed. A loft that already has a decent hatch and ladder needs only the boards; one starting from a small hatch with no ladder needs the access built before the boarding pays off. We price each element separately so you can pick exactly the level of work your loft needs.
Loft boarding package
Typical London cost (2026)
Small loft, standard boarding only
£500 – £700
Raised boarding + light
£900 – £1,200
Raised boarding + ladder + hatch + light
£1,300 – £1,500
Loft boarding is not a loft conversion
It is important to be clear about what loft boarding is and is not. Boarding creates a clean, stable storage floor and safe access; it does not turn the loft into a habitable room. The two jobs are very different in scope, cost and regulation.
Loft boarding for storage does not normally require building regulations approval or planning permission, because you are not changing the use of the space or its structure; you are simply laying a floor over the existing joists, ideally raised above the insulation.
A habitable loft, a bedroom, office or playroom, is a loft conversion, and that is a structural project governed by building regulations covering floor strength, fire escape, insulation and head height, typically costing tens of thousands of pounds. The existing ceiling joists are usually not strong enough to carry a habitable floor without being upgraded. We are upfront about this line: if you want storage, we board it; if you want a room, that is a separate, regulated project, and we will tell you so rather than overload a floor that was never designed for it.
Getting an accurate loft boarding quote
Loft prices depend on the usable area, the insulation depth and the access, none of which can be judged without a look, so a firm price needs a quick survey. At London Refurbishments & Leak Repairs we offer a free survey and a fixed quote with no obligation, measuring the boardable area, checking the insulation depth to advise on raised boarding, and confirming what ladder, hatch and lighting work the loft needs.
All figures in this guide exclude VAT. Loft boarding is generally standard-rated at 20%, so include it when comparing quotes; a low headline price may simply have left it off. We show VAT clearly so the figure you see is the figure you pay.
Frequently Asked Questions
How much does loft boarding cost in London?
Loft boarding in London costs £25–£40 per square metre for standard boarding and £35–£55 per square metre for raised boarding fitted over the insulation in 2026. A typical loft works out at £500–£1,500 once you add a loft ladder, hatch enlargement or lighting. Figures exclude VAT, which is generally charged at 20%.
How much does it cost to board a loft for storage?
Boarding a loft for storage costs £25–£40 per square metre for standard boards, or £35–£55 per square metre if raised on loft legs to protect the insulation. For a typical 15–25 square metre loft that is roughly £400–£900 for boards alone, or £500–£1,500 for a complete job with a ladder and light. Storage boarding does not normally need building regulations approval.
Why is raised loft boarding more expensive?
Raised boarding costs £35–£55 per square metre rather than £25–£40 because it uses loft legs to lift the boards above the full depth of the insulation, leaving an air gap. This stops the boarding crushing the insulation flat, which would otherwise reduce your home's thermal performance and raise condensation risk. The extra cost protects both your insulation and your stored belongings, so we fit it as standard where the insulation depth requires it.
Does loft boarding need building regulations approval?
Boarding a loft for storage does not normally need building regulations approval or planning permission, because you are not changing the use of the space or its structure. That changes if you want a habitable room such as a bedroom or office, which is a loft conversion governed by building regulations for floor strength, fire escape and head height. We board lofts for storage and will tell you plainly if your plans cross into conversion territory.
How much does a loft ladder cost to fit?
A loft ladder supplied and fitted costs £150–£350 in London, depending on whether it is a basic aluminium concertina ladder or a sturdier sliding timber type and on the height of the drop. Fitting it at the same time as boarding, and alongside any hatch enlargement or lighting, is cheaper than commissioning each job separately later. Prices exclude VAT.
