Key Takeaways
- A resin bound gravel kit is kiln-dried stone plus a two-part UV-stable polyurethane binder – it is not a pour-on binder for loose gravel. That mix-up is a recipe to waste money.
- Materials from a resin bound gravel kit work out at roughly £21 to £29 per square metre at 15mm depth.
- One 100kg resin bound gravel kit covers about 4m² at 15mm for paths and patios, or about 3.55m² at the 18mm depth a driveway needs.
- Resin bound gravel paths and patios are a realistic weekend job with a good kit; past roughly 20m², or on any driveway, hire a forced action mixer and bring a second pair of hands.
- Damp stone ruins a resin bound gravel kit: moisture reacts with the binder and foams the finish cloudy white, which is impossible to repair.
- The mixed resin from a resin bound gravel kit gives you 10 to 15 minutes of working time, so proper preparation is key.
- A resin bound surface requires no planning permission for the typical driveway. A bonded surface is a sealed skin and does.
I’ve seen jobs where guys with an ugly gravel driveway have read a resin how-to and figured they have it covered. They go on to order half a dozen bottles of pour-on binder, and spends their weekend soaking £300 into loose stone. What they got was the same gravel wearing a stiff crust, rough at the edges and cracking within a couple of years. It was because the stuff they used wasn’t the product they thought they were buying.
Confusion is baked into the market, because three different products can all get sold under “resin” and “gravel” in the same search. So before we get to colours and coverage, I sorts out which product a resin bound gravel kit actually is, what it should cost, and the jobs you should – and should not – take on yourself.
What Is in a Resin Bound Gravel Kit?
A resin bound gravel kit contains kiln-dried decorative aggregate, a two-part polyurethane resin binder, and usually a measure of fine sand. The standard full-size kit is 100kg of stone (four 25kg bags) with around 6.5 to 7.5kg of resin in two tins: Part A is the resin itself, Part B the hardener that starts the cure the moment they meet. Smaller 1m² kits pair a single 25kg bag with a matched bottle set, and some add gloves, a trowel and anti-slip grit.
The stone is graded at 1–3mm or 2–5mm and it is kiln-dried for a reason I will come back to. Colour blends run from quiet buffs and silvers through to marble and crushed-glass mixes, and some suppliers will post a sample pouch for a couple of quid, which is money well spent before you commit to a tonne of anything.
One spec worth checking on any resin bound gravel kit: the binder should be UV-stable aliphatic polyurethane. Cheaper non-UV resin binds just as well on day one, then ambers in sunlight within a couple of summers, and on a silver or white blend that reads as a stain you cannot clean off.
Resin Bound, Resin Bonded or Pour-On Binder: Which Is Which?
TLDR: a resin bound gravel kit is mixed through and smooth, bonded is scattered on and rough, pour-on is a glue for gravel you already have.
A resin bound gravel kit is the trowelled system: every stone gets coated before laying, so the finish is smooth, tightly packed and permeable through its full depth. The other two only ever glue stone at the surface.
| System | How it goes down | What you get |
|---|---|---|
| Resin bound kit | Stone and resin mixed together, trowelled at 15–18mm onto a hard base | Smooth, seamless, permeable surface; the one in the adverts |
| Resin bonded | Resin squeegeed onto the base at around 3mm, dry stone scattered over | Rough, gritty texture; not permeable; loose stones shed over time |
| Pour-on binder | Liquid resin poured or sprayed over existing loose gravel | The same gravel, stiffened; cheaper, but not a new surface |
The permeability point matters beyond looks. A resin bound surface lets rain drain straight through, which keeps it inside the permeable surfacing rules for front gardens, so no planning permission for the typical drive. A bonded surface is a sealed skin and does not get that pass.
The pour-on binders (Easihold, GravelHold and the like) are a respectable product for the job they actually do: stopping loose gravel migrating on a path or drive you otherwise like. They are a different product solving a different problem, and worth pricing on their own terms. What they will never do is turn loose gravel into a resin bound finish.
Can You Lay Resin Bound Gravel Yourself?
Installing a resin bound gravel kit is genuine DIY territory for a path, a patio or a pool surround; a full driveway is where it gets tricky. The mixing and trowelling are simple enough, sure.But, the problem is that everything happens against a tight clock with a material that does not forgive time over-runs.
Up to roughly 20m², an electric paddle mixer (around £30 to buy) and two people can manage it: one mixing the next batch while the other trowels the last. Past that, or on any driveway, you want a forced action mixer, the machine the trade uses for consistent coating, hired by the day. A driveway also raises the stakes on the base, the depth and the consequences of a visible join, and a botched 40m² of resin is not something you rake out and start again, the way you would with loose gravel. It gets broken out with a breaker, and it’s a real pain.
Do You Need a Different Kit for a Driveway?
The same resin bound gravel kit does both jobs; a driveway just takes it laid deeper, at 18mm rather than the 15mm that suits paths and patios. That extra 3mm is what gives the surface the strength to take a car without cracking, and it is mandatory.
Coverage is where that bites: the 100kg kit that covers 4m² of path at 15mm covers about 3.55m² at driveway depth, roughly 11% more cost per square metre before anything else changes. You also lay the mix slightly proud and consolidate it down: allow around 21mm loose for an 18mm finish, 18mm loose for 15mm.
The base rules tighten too. A path can tolerate a base with some history. A driveway base needs to be sound concrete or tarmac without cracks or movement, because the resin layer is only ever as good as what it is stuck to. Frost heave or a rocking slab underneath will crack the resin above it, and the resin gets blamed.
How Much Do Resin Bound Gravel Kits Cost Per Square Metre?
Resin bound gravel kits work out at roughly £21 to £29 per square metre in materials at 15mm depth, based on supplier prices checked in August 2026. A full 100kg kit with its binder lands around £80 to £115 depending on the aggregate, and covers 4m² at path depth. At the 18mm a driveway needs, the same kit covers less, so budget £23 to £33 per square metre. The little 1m² kits run about £30 each, handy for a doorstep pad or a repair, expensive as a way to do a whole path.
For context, a professionally installed resin bound driveway runs £60 to £95 per square metre, so DIY materials come in at roughly a third of the installed price, with your weekend and the tool hire making up the difference. And plain loose gravel remains a fraction of either, which is why I never talk anyone out of an ordinary gravel driveway if budget is the deciding factor.
Oh, and buy one kit more than the maths says. Running out with half a metre left is the most expensive way to discover that batch-matched aggregate two weeks later is not quite the same colour.
What a Resin Bound Gravel Kit Does Not Include
A resin bound gravel kit gives you the stone and the resin, and almost nothing else the job needs. Before the first tin opens, you also want:
| System | How it goes down | What you get |
|---|---|---|
| Resin bound kit | Stone and resin mixed together, trowelled at 15–18mm onto a hard base | Smooth, seamless, permeable surface; the one in the adverts |
| Resin bonded | Resin squeegeed onto the base at around 3mm, dry stone scattered over | Rough, gritty texture; not permeable; loose stones shed over time |
| Pour-on binder | Liquid resin poured or sprayed over existing loose gravel | The same gravel, stiffened; cheaper, but not a new surface |
| What you need | What to get | Why it matters |
|---|---|---|
| Mixer | Electric paddle mixer up to about 20m², forced action mixer beyond that | A bog-standard drill will burn out in the first bucket |
| Trowel or float | Flat steel plastering trowel | A wipe of water or white spirit on the face stops the mix grabbing |
| Primer | Whatever the resin manufacturer specs, usually on concrete | Skip it and the job’s most critical bond is trusting itself to dust |
| Edging | Fixed edging strips, or an existing kerb or wall | The wet mix is stiff, but it still needs a firm edge to work up to |
| Scales and a timer | Kitchen scales will do | Identical weights and mixing times are what make the joins between batches disappear |
| A second person | One mixing, one trowelling | Not in any box, and worth more than everything in it |
What is Involved in a Resin Bound Gravel Kit Application
Applying a resin bound gravel kit is a race of batches: once the two resin parts meet, you have roughly 10 to 15 minutes of working time, less on a hot day. Prepare completely before mixing anything: base sound, dry, swept, primed where specced, edges fixed, area marked out in metre squares so each batch has a known home. Mix Part A and Part B until uniform, about 90 seconds. Add the resin to the stone and mix until every stone looks wet, a couple of minutes. Tip out, spread, then trowel firmly to consolidate, working to your marks. Keep a wet edge between batches, keep the mixing times identical, and keep everyone (dogs included) off it until it cures: hard in around 5 to 8 hours in decent weather, foot traffic after roughly 24, a car after 48. Rain onto uncured resin is a write-off, and cold stretches every one of those times.
How Resin Bound Kits Go Wrong
Most resin bound gravel kit failures trace back to water, thin coverage or a base that moved. The material rarely fails, it’s usually the conditions.
- Micro-foaming. Moisture in the mix reacts with the polyurethane and foams it, curing to a cloudy white bloom. Causes: damp aggregate, a wet base, or rain during the cure. This is the whole reason kit stone is kiln-dried, and why a bag with condensation inside it never goes in the mixer. There is no fix short of breaking out the affected area.
- Spreading it thin. Stretching the last kit to finish the area leaves a weak, friable patch that sheds stone. Depth discipline beats coverage optimism.
- Visible joins. Batches mixed for different times, or a batch that started to cure before its neighbour arrived, show as a lap line forever. Same mixing time, wet edge, no tea breaks mid-section.
- Base movement. Cracks in the resin are nearly always cracks in the base echoing through. The resin layer is a finish, not a structure.
Next Steps
Outdoor aggregates plans to bring resin bound gravel kits into the shop, so if you are pricing a project, keep an eye on the store or get in touch and we will tell you what is landing and when. And if what you actually want is gravel that stays put underfoot without the resin, at a fraction of the cost, our self-binding gravel range does exactly that.
Have you ever laid a resin bound kit yourself? How big an area did you take on, and how did the day go? Love to hear your experience in the comments.
FAQs
Can you just pour resin over gravel?
Pouring resin over loose gravel is a different product from a resin bound gravel kit: a pour-on binder stiffens the top layer of stone where it lies. The result is tidier gravel, not the smooth trowelled surface, and it stays rougher, weaker and shorter-lived than a bound finish.
What base does a resin bound gravel kit need?
A resin bound gravel kit needs a sound, dry, rigid base: existing concrete or tarmac in good condition, primed where the manufacturer specs it. Laid over soil, sand or loose hardcore it will crack, because the resin layer has no structural strength of its own.
How long before you can walk or park on resin bound gravel?
A resin bound gravel kit surface takes light foot traffic after roughly 24 hours and a car after 48, with both stretching in cold or damp weather. I treat the advertised minimum as a fair-weather figure and give it the extra day when in doubt.
Will weeds grow through resin bound gravel?
Weeds do not push up through a properly laid resin bound gravel kit surface; the growth people see is windblown seed rooting in surface debris. A stiff brush a few times a year, and the odd hot-water kettle for a stubborn one, keeps it clean.
Do you need planning permission for a resin bound driveway?
A resin bound gravel kit surface is permeable, so a front garden driveway laid with one sits inside the permeable surfacing rules and needs no planning permission in the typical case. A resin bonded surface is not permeable and does not get the same free pass.