What does grinding a tree stump involve?
Grinding a tree stump uses a petrol or diesel machine with a rotating steel disc carrying 12 to 24 carbide-tipped teeth. The disc sweeps left and right at 2,000 rpm, chewing the wood 150mm to 300mm below ground level. The result is a pile of wood chips and a hole, completed in 15 to 90 minutes per stump.
The operator first cuts the stump as low as a chainsaw will allow — usually 50 to 100mm above soil. The grinder is wheeled into position, the cutting wheel is lowered onto the wood, and the disc is swept across the face of the stump in shallow 20 to 40mm passes. Each pass removes a layer of wood and any radiating surface roots within reach. The hole is then raked level and backfilled with the chips the machine has just produced.
Should you grind a stump yourself?
You can grind a stump yourself if it is under 18 inches across, in soft wood, on flat ground, with no buried services within 2 metres. Hire costs £80 to £180 for 24 hours plus £40 fuel and PPE. For anything larger, harder, or near pipes and cables, a professional works out cheaper and safer.
DIY makes sense for one small pine, birch, or sycamore stump in an open lawn. It stops making sense fast when you add up the real cost: hire fee, fuel, diesel, helmet, ear defenders, chainsaw trousers, steel-cap boots, and the half-day off work to collect and return the machine. Most homeowners who try it once tell us the same thing — they wish they had taken a fixed-price quote and spent the day in the garden instead of behind a 200kg machine.
DIY hire versus a professional — the real numbers
| Item | DIY hire | Professional |
|---|---|---|
| Machine | £80–£180 / 24 hr | Included |
| Fuel + 2-stroke oil | £30–£50 | Included |
| PPE (if you don't own it) | £40–£80 | Included |
| Transport (van or tow) | £20–£60 | Included |
| Cleanup and chip backfill | Your time, half a day | Included |
| Insurance for damage | £10–£20 / day | Included (£5m public liability) |
| Real total | £180–£390 | £85–£300 |
Full DIY hire pricing and machine specs are broken down on our hire page — including the 13hp narrow-access models that fit through 750mm garden gates.
How much does grinding a tree stump cost?
Grinding a tree stump costs £85 to £300 per stump in the UK. Small soft-wood stumps under 12 inches start at £85. Medium stumps of 12 to 24 inches cost £120 to £200. Large hardwood stumps over 24 inches reach £200 to £300 or more. DIY hire works out at £120 to £220 all in.
The single biggest cost driver is diameter at ground level. The second is hardness — oak, beech, and yew grind 20% slower than pine or sycamore, so they cost 20% more. Access is the third lever: a stump 30 metres from the van, behind a narrow gate, on a slope, can add 15 to 35% because the grinder takes longer to set up. Full breakdowns by size, wood type, and access are listed on the stump grinding cost page.
Multiple stumps on one visit drop sharply. After the first stump, every additional stump on the same job is roughly 35% cheaper because the machine is already on site. Six leylandii roots from a hedge usually come in at £180 to £280 total, not 6 × the single-stump price.
How long does grinding a tree stump take?
Grinding a tree stump takes 15 to 90 minutes for most domestic jobs. A 10-inch pine stump grinds in 15 to 20 minutes. A 24-inch oak takes 60 to 75 minutes. Add 10 to 15 minutes for setup, raking, and backfilling the hole with the wood chips the machine has produced.
| Stump diameter | Soft wood (pine, birch) | Hard wood (oak, beech) |
|---|---|---|
| Up to 12" | 15–25 min | 20–35 min |
| 12"–18" | 25–40 min | 35–55 min |
| 18"–24" | 40–60 min | 55–75 min |
| 24"–36" | 60–90 min | 75–120 min |
How deep should you grind a tree stump?
Grind a tree stump 150mm to 300mm (6 to 12 inches) below the surrounding ground level. That depth removes the structural crown, prevents regrowth, and gives 100mm of clearance for new turf, paving, or topsoil. Grinding deeper than 300mm wastes time, fuel, and teeth on roots that decay naturally over 5 to 10 years.
If you plan to lay a patio, drive a fence post, or plant a replacement tree in the same spot, ask for 300mm. For lawn returfing, 150mm is enough — turf needs only 25 to 50mm of root run, and the chips will settle and compost as the surrounding soil knits in. Decisions about depth are something a professional will confirm before the machine starts.
What equipment do you need to grind a tree stump?
You need a wheeled stump grinder rated 13 to 27 horsepower, a chainsaw to cut the stump flat first, full PPE (eye, ear, leg, foot protection), a CAT4 cable detector if you are near a building, and at least 2 metres of clear access to the stump. A typical hire kit weighs 100 to 200kg, so a tow vehicle or van with a ramp helps.
Minimum DIY kit list
- Stump grinder: 13hp narrow-access for gates, 25hp+ for large stumps
- Chainsaw: to cut the stump down to 50-100mm above soil
- Spare grinding teeth: at least 2 sets — teeth blunt on grit
- Eye and ear protection: EN 166 visor, EN 352 ear defenders
- Chainsaw trousers + steel-cap boots: EN 381 class 1 minimum
- Cable detector: CAT4 if within 2 metres of any building
- Rake and shovel: for chip cleanup and backfill
Hire kits often include the grinder and teeth but rarely the chainsaw, PPE, or cable detector. Budget another £40 to £80 for those if you do not already own them.
When should you call a professional instead of DIY?
Call a professional for stumps over 24 inches across, hardwood species (oak, beech, yew), stumps within 2 metres of buildings or buried services, stumps on slopes over 15 degrees, or any job inside a Tree Preservation Order area. The £85 to £300 quote covers the machine, the operator, insurance, and the cleanup.
The cost-to-DIY ratio also flips fast when you have two or more stumps. By the time you have added hire, fuel, PPE, and a day off work, a professional is the cheaper number on the page. A photo and a postcode is enough to get a fixed price within the hour — send the details and we will quote it back, no callout fee, no deposit, no upsell.
