The best
work lights
for lofts, cellars and site

A good chunk of my working week happens in the dark. Lofts with no lighting circuit, cellars where the bulb went sometime around decimalisation, sub-floor voids, garages stacked to the ceiling. A head torch goes on before the loft ladder every time — I’ve written about the ones worth buying — but a head torch has a built-in limitation: it lights where you look. The insulation gap, the slipped sarking felt, the historic leak staining round the chimney — the things that matter are usually in the corner you aren’t looking at, and a moving cone of light is a genuinely bad way to search a space methodically.

The other problem is photographs. An RdSAP assessment wants loft insulation evidenced; a damp investigation wants the staining on the cellar wall recorded honestly. Phone cameras have got remarkably good in the dark, but “good” means aggressive processing — noise, smearing, colours that have been guessed. Put a decent work light in the space and the same phone produces evidence, usable in a report. That alone justifies the second light in the bag.

The work light market runs from £10 Amazon specials to £300 site floodlights, and the spec sheets are among the least honest in the tool world. What follows is how I’d cut through it — and seven lights, from a two-for-£12 glovebox pair to proper trade kit, that earn a place.

The one I’d buy

Unilite SLR-1000

A folding, palm-sized 1000-lumen COB panel with strong magnets in the base, a 180° handle that doubles as a hook and a stand, and a separate 300-lumen torch in the head for spot work. It is the format that suits survey work best — small enough to live in the bag, bright enough to light a whole loft bay, and it holds itself in position so both hands stay free. Unilite is a British trade-lighting firm and owner feedback on the build is consistently good.

Typically £40–£55

Check price on Amazon

How I judge a work light

Honest lumens, at a setting you can actually run. For a loft, a cellar or a single room, 500–1500 genuine lumens of diffused light is the useful band — enough to see and photograph the whole space without glare. The catch is that headline figures are usually a boost mode held for minutes before the light dims to manage heat, and the cheap end of Amazon quotes numbers that are simply fiction. A real 1000 lumens for an hour is worth more than a claimed 10,000 for ninety seconds.

Colour temperature and CRI — because the photos are the point. Mould, damp staining, salt bands and timber discolouration photograph most honestly under neutral light, around 4000–5000K, from an LED with decent colour rendering (CRI in the 80s or better; 95+ is detailing-lamp territory). Very cold 6500K light makes everything look slightly blue and clinical; very warm light can make a tide mark quietly disappear. Most work lights sit at the cold end, which is liveable — but if your photographs end up in reports or insurance claims, colour quality is a real specification, not audiophile fuss.

It has to hold itself up. Both my hands are usually occupied — probe in one, phone in the other. A work light earns its keep with a magnetic base that actually grips (steel beams, tanks, van doors), a hook for hanging off a rafter or a nail, and a stand or folding body that aims the light where you want it on a floor that is never flat. This is where the format beats a torch lying on its side pointing at nothing.

Runtime at useful output. Manufacturers quote runtime at the dimmest setting and brightness at the highest, and hope you don’t notice they never coincide. What matters is the middle: a light that can do two or three hours at a genuinely useful output covers a day of inspections between charges. Check the battery capacity (a real 5000mAh cell is a good sign) and read owner feedback on what the runtime actually is.

USB-C, and ideally power both ways. USB-C charging means one cable for the light, the phone and everything else in the van; micro-USB on a new light in 2026 is a small tax on your patience. Some lights add a power-bank function — the light charges the phone that’s taking the photographs, which on a long day is more useful than it sounds. Battery-platform lights (Milwaukee, Makita) sidestep the question entirely: the drill batteries run the light.

The comparison

The picks in detail

01

Unilite SLR-1000

Best overall — the inspection format done properly, and my top pick above

The spec sheet reads like it was written by someone who has actually been in a loft. A 1000-lumen COB panel for flooding the space, a separate 300-lumen torch in the head for looking down between joists, a 5200mAh cell, strong magnets in the base and a 180° folding handle that works as hook, stand and aiming mechanism. There’s even a glow-in-the-dark strip so you can find the thing again when it’s off — a small feature that tells you who it was designed for. At 320g and 130mm folded it disappears into a tool bag, and IPX5 water resistance means a wet cellar doesn’t worry it.

Owner feedback is consistent on the two things that matter: the output is believed, and the build takes punishment. The one genuine grumble is the micro-USB charging port and its leisurely 6.5-hour charge — the newer SLR-1450 below fixes both, for more money.

For

• Flood panel plus spot torch covers both jobs in one unit
• Magnets, hook and stand — genuinely hands-free
• Big 5200mAh cell; trade-brand build quality
• Compact and light enough to carry always

Against

• Micro-USB charging, and slow at 6.5 hours
• Cold-white COB — fine for looking, less flattering for photographs than neutral light

Typically £40–£55

Check price on Amazon

02

Scangrip NOVA R

The professional pick — a proper compact floodlight from the firm the trades rate

Scangrip is a Danish work-lighting specialist whose kit turns up wherever people are paid to see what they’re doing — bodyshops, workshops, site. The NOVA R is their compact rechargeable floodlight: up to 2000 lumens from a 44-LED array, USB-C charging, IP65 dust and water sealing, strong magnets, and a flexible handle that positions the head at whatever angle the job needs. The multi-LED design throws a broad, even wash rather than a hot spot, which is exactly what you want bounced off a loft’s rafters. Their OPTILight stepped-output system is a polite way of managing the honest-lumens problem: pick the illuminance the task needs and get predictable runtime, rather than running everything at maximum and wondering why it’s dimming.

For

• Even, room-filling flood with no hot spot
• IP65 and a housing built for site abuse
• USB-C; sensible stepped outputs rather than a dishonest boost

Against

• Nearly twice the price of the SLR-1000
• No secondary spot torch — it does one job, well

Typically £75–£95

Check price on Amazon

03

Unilite SLR-1450

The step-up — the SLR-1000 with USB-C, more output and a snap hook

Same folding format as the SLR-1000, updated where it counted: 1450 lumens from the COB panel, fast 2A USB-C charging (three hours, not six and a half), a carabiner-style snap hook on the rotating handle, battery-level indicators, and red and red-flash modes for the roadside. The quoted runtime spread — 3 hours flat out to 90 hours on minimum — is a usefully honest way of publishing the trade-off most brands hide. The one spec to note: the LEDs are 6500K daylight, the cold end of the range, so photographs lean blue — crisp for detail, less faithful for colour. If that trade-off doesn’t bother you, this is arguably the best pure inspection light here.

For

• USB-C at 2A — charged over lunch
• 1450 lumens fills a large loft bay from one position
• Snap hook, magnets, glow strip — the practical details all present

Against

• 6500K is colder than ideal for evidence photography
• £15–£20 over the SLR-1000 for gains you may not need

Typically £60–£75

Check price on Amazon

04

Milwaukee M12 AL-0 Rover

Best battery-platform area light — if you already own M12 batteries

A bare-tool area light for Milwaukee’s M12 platform: 1000, 400 or 200 lumens through a broad diffused lens, in a squat housing that sits stably on a floor and angles the wash upward across a room. Milwaukee markets the TrueView LED array on colour quality and even coverage, and owner feedback backs the claim — it’s repeatedly described as filling a room like a fixed light rather than a torch. The economics are the whole question: a bare unit is sensible if M12 batteries already live in your van, and hard to justify if they don’t.

For

• Genuine room-filling area light, not a torch pretending
• Swappable batteries — runtime is however many packs you carry
• Colour quality a cut above generic cold-white COB

Against

• Bare unit — pointless without M12 batteries
• No magnet; it sits or hangs rather than sticks

Typically £65–£90 bare (no battery or charger)

Check price on Amazon

05

Makita DML807

Best hanging lantern — 360° light from a rafter, on the 18V batteries you may already own

A different answer to the same problem: instead of a panel you aim, a cylindrical lantern you hang. Hooked over a convenient rafter or nail, the DML807 throws 610 lumens through a full 360°, which lights a loft the way a pendant lights a room — from above, everywhere at once, with no re-aiming as you move around. A 180° half-lantern mode (300 lm) stops it glaring in your eyes when it’s beside you, a 150-lumen torch mode handles the walk in, and a USB port charges your phone from the tool battery. It runs on Makita’s 18V LXT packs — the most common tool batteries in Britain — and Makita’s XPT sealing shrugs off dust and drips.

For

• Hanging 360° light is the best way to light an entire loft at once
• Runs on the 18V batteries half the country already owns
• USB out — charges the phone taking the photos

Against

• Bare unit; dear if you’re not on the platform
• 610 lumens is modest by panel standards — the geometry does the work

Typically £95–£115 bare (no battery or charger)

Check price on Amazon

06

Scangrip Sunmatch 4

The specialist — colour-accurate light for photographs that have to be honest

This one is here for a specific reason. The Sunmatch 4 is a detailing light built for colour matching — bodyshops use it to check paint — which means very high colour rendering (Scangrip publish CRI figures in the mid-90s for the range) and a continuously variable colour temperature from 2500K to 6500K. For survey work, that translates directly: set it around 4500–5000K and mould growth, salt banding and tide marks photograph as the colour they actually are, which matters when the photo is going in a report someone will act on. At 500 lumens it won’t light a loft on its own — it’s the second light, the one you bring to the wall for the close-up after the big flood has found the problem. A diffuser is included, and it’s IP65 sealed like the rest of Scangrip’s kit.

For

• Adjustable 2500–6500K and detailing-grade CRI — unique at this size
• Magnet, pocket clip, diffuser; genuinely pocketable
• The most honest light here for close-up evidence photographs

Against

• 500 lumens — a companion light, not the main event
• Specialist money for a specialist job

Typically £85–£105

Check price on Amazon

07

Coquimbo rechargeable work light (2 pack)

Best on a budget — two folding COB lights for the price of a takeaway

The ubiquitous Amazon folding work light: a COB strip on a swivelling head, magnetic base, hook, a handful of modes, micro-USB charging, sold as a two-pack for about £12. Every claim on the listing deserves a discount — the real output is a fraction of what the trade lights manage, and the cold blue COB does photographs no favours. And yet: owner feedback across tens of thousands of reviews is that they work, the magnets hold, and at this price you can leave one in the glovebox, one by the consumer unit, and not think about them again. For a homeowner who looks into the loft twice a year, this is honestly enough. For anyone working in the dark for a living, it’s the backup, not the plan.

For

• Two lights for £12 — scatter them where they might be needed
• Magnet, hook and swivel head, same as the big boys
• Vast, broadly positive owner feedback for what it is

Against

• Optimistic brightness and runtime claims; harsh cold light
• Micro-USB; no spares, no brand accountability, listings change

Typically £10–£15 for two

Check price on Amazon

What actually matters — and what doesn’t

Ignore the lumen arms race. Amazon is full of “12,000 lumen” work lights at £25. LEDs and batteries have not repealed physics: that output would flatten the claimed cell in minutes and cook the housing. Treat any figure over about 2000 lumens on a compact rechargeable light as marketing, and read owner feedback for words like “dims after a few minutes” — that’s thermal throttling, the honest spec leaking out.

Diffusion beats brightness in a confined space. A bare hot LED in a small dark loft is glare: your pupils clamp down, and everything outside the beam goes blacker. A broad, even panel bounced off the rafters, or a lantern hung above head height, lights the space rather than a patch of it. This is why the M12 AL’s diffused design and the DML807’s hanging 360° format work so well — and why 600 well-placed lumens beat a 2000-lumen spot at arm’s length.

The gimmicks you can skip. Bluetooth speakers built into work lights exist (Ledlenser’s otherwise respectable iF-series has a “Music” variant); colour-cycling party modes, disco strobes, “emergency beacons” on a light that will live in a loft — none of it earns weight in the bag. Red modes have a genuine roadside use; the rest is shelf appeal. Spend the money on the LED quality, the battery and the sealing.

Think about the battery question once, properly. If your van already runs Milwaukee or Makita batteries, the platform lights are the obvious buy — runtime becomes however many packs you carry. If not, a self-contained USB-C light is simpler and lighter. And a note for anyone heading onto managed construction sites: task-lighting rules there are their own subject, and what’s in this guide is inspection kit, not a substitute for proper site lighting on a distribution board.

Questions I get asked

How many lumens do I need to light a loft? Less than the adverts suggest. A typical domestic loft is lit perfectly adequately by 500–1000 genuine lumens if the light is diffused and well placed — hung centrally or bounced off the underside of the roof. A big loft, or one you’re photographing end to end, benefits from 1500 or so. What you don’t need is a 5000-lumen floodlight at arm’s length: in a confined space that’s glare, and your photos will be a white blaze surrounded by black.

What colour temperature is best for inspection photographs? Neutral white, around 4000–5000K, with the highest CRI you can get. That range is close to daylight without the blue cast of 6500K “daylight” LEDs, so mould reads as the greens and blacks it actually is, and damp staining keeps its tell-tale brown edge instead of washing out. Phone cameras auto-white-balance, but low-CRI light discards colour information that no amount of processing brings back. It’s the reason a colour-match light like the Sunmatch earns a place in a survey bag.

Are the cheap Amazon work lights any good? For occasional domestic use, genuinely yes — with expectations set correctly. The £10–£15 folding COB lights are dimmer than claimed, cold-toned and slow to charge, but the format (magnet, hook, swivel) is right and owner feedback is broadly happy. The reported failure points are the switches and the micro-USB sockets, which at this price you accept. Where I’d draw the line is relying on one professionally: no consistent output, no spares, and the exact product under a given name changes without notice.

Should I buy the work light on my drill-battery platform? If you own the batteries, usually yes — it’s the cheapest runtime you’ll ever buy, and a spare pack means the light never dies mid-job. Two caveats: bare-tool prices flatter the true cost if you don’t own the platform (a battery and charger can double it), and platform lights are bulkier than the folding inspection format, so they tend to live in the van rather than the survey bag. My honest answer is both: a small self-contained light that’s always with you, and the platform light for when the whole space needs lighting for an hour.

If the reason you’re reading this is a dark loft and a question about what’s in it, that’s the day job. The practice carries out EPC assessments — where the loft photos are taken by someone who brought proper light — along with building surveys and retrofit assessments across Sussex, Kent and Surrey; get in touch. A good head torch still goes on first, and there are more field-kit guides if you’re building out the bag.

Small print. This guide is general information, not professional advice on any specific property, and inspection lighting is no substitute for the site lighting rules that apply on managed construction sites. Prices are indicative, move constantly and were checked at the time of writing; the linked page always shows the current price. As an Amazon Associate I earn from qualifying purchases.