Solve backwards
How much driveway will my resin bound kits cover?
- 12 kitsThe example worked below
- Resin Bound Surfacing CalculatorEvery figure is its own
You have
How much resin bound kits?
Worked by the Resin Bound Surfacing Calculator at the settings below.
The settings it uses
- Laid Depth
- 0.75 in
- Largest Stone Size in the Blend
- 0.2 in
- Loose Bulk Density of the Dried Stone
- 96.8 pcf
- Stone One Resin Kit Is Matched To
- 220 lb
- Allowance for an Uneven Base and Loss (%)
- 5
What it will do
416 sq ft of surface
38.6 m²
One driveway. Enough for a driveway 10 ft wide and 41.6 ft long.
Or several. Less than one driveway of the size the Resin Bound Surfacing Calculator opens on (a driveway 10 ft wide and 43 ft long).
Check it forwards
- Area to Surface
- 416 sq ft
- It asks for
- 12 kits
- You have
- 12 kits
The Resin Bound Surfacing Calculator asks for 12 kits at that size, and 13 kits one step larger.
If you had more, or less
Around your amount
Each worked by the Resin Bound Surfacing Calculator at the same settings.
Half
6 kits
208 sq ft
a driveway 10 ft wide and 20.8 ft long
Yours
12 kits
416 sq ft
a driveway 10 ft wide and 41.6 ft long
Half as much again
18 kits
624 sq ft
a driveway 10 ft wide and 62.4 ft long
Double
24 kits
831 sq ft
a driveway 10 ft wide and 83.1 ft long
Common amounts
What each amount of resin bound kits covers
The sizes it is usually sold in, each worked by the Resin Bound Surfacing Calculator at the settings above.
| You have | It covers | As one driveway | Average driveways |
|---|---|---|---|
| 5 kits | 173 sq ft(16.1 m²) | a driveway 10 ft wide and 17.3 ft long | under 1 |
| 10 kits | 346 sq ft(32.2 m²) | a driveway 10 ft wide and 34.6 ft long | under 1 |
| 20 kits | 693 sq ft(64.4 m²) | a driveway 10 ft wide and 69.3 ft long | 1 |
| 40 kits | 1,386 sq ft(129 m²) | a driveway 10 ft wide and 139 ft long | 3 |
Depth follows the stone
The trade's working rule is a laid depth of at least three times the largest stone, or the surface has too little interlock and ravels. Footpaths in 1 to 3 mm stone are commonly laid at around 12 to 15 mm, and drives in 2 to 5 mm stone at around 18 mm — the calculator's opening depth. A path at 12 mm covers half as much again per kit.
Each kit is matched to its stone
A kit's Part A and Part B are proportioned for a set weight of dried stone, printed on the kit, and kits are never split. The calculator's stone per kit and the stone's loose bulk density are placeholders of the usual order, so enter your system's own figures — the kit count, and the drive here, follow them directly.
A surface, not a structure
Resin bound carries no load of its own; the tarmac, concrete or permeable build-up beneath it does, and cracks or a failing base come straight through. Five per cent extra stone goes into dips in an old base, edges and the mixer, and read backwards it comes off the kits — a rutted drive needs regulating first, not more resin.
How the answer is worked
Nothing here is a second formula. The Resin Bound Surfacing Calculator runs forwards — a size in, a quantity out — and this page grows its own starting driveway in proportion until the quantity it asks for is what you have. Where it rounds up to whole containers, the answer is the largest size before the next one would be needed.
Where the calculator adds an allowance for cuts or breakage when you order, the same allowance comes off here, because it is the same calculator: a stack you already own finishes less than its face value. Where it adds none, neither does this page — the settings beside the answer say which.
Resin Bound Surfacing Calculator
runs it forwardsHow much dried stone a resin bound drive or path takes at its laid depth, in whole resin kits, with the depth checked against the stone size.
Work out what to buy insteadSolve backwards
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Solve backwards
Start from what is already in the yard
Paint, sheets, rolls, bags and pieces, each read the other way by the calculator that orders it.
The calculator's own figures
Nothing is estimated twice: the page runs the same calculator you would order with.
The largest size that fits
Where a calculator rounds up to whole containers, the answer stops before the next one.
Both unit systems
Gallons and litres, square feet and square metres, side by side.
Frequently asked questions
- How much surface does 12 kits of resin bound kits cover?
- At the Resin Bound Surfacing Calculator's own settings, 416 sq ft (38.6 m²) — a driveway 10 ft wide and 41.6 ft long. Every figure follows the settings, which you can change in the calculator.
- How many square metres does a resin bound kit cover?
- It depends on the stone each kit is matched to and the laid depth. At the calculator's placeholder of 100 kg of stone per kit, 18 mm deep, a kit covers about 3.6 m² (39 square feet); at 15 mm for a path, about 4.3 m². Your system's data sheet gives the real figures.
- How deep should a resin bound driveway be?
- At least three times the largest stone. For a domestic drive in 2 to 5 mm stone that is commonly around 18 mm (about 3/4 inch); footpaths in 1 to 3 mm stone are laid at around 12 to 15 mm. The system's data sheet has the binding figure — there is no British Standard for resin bound surfacing.
- Can resin bound go over an old tarmac drive?
- Often, if the base is sound. Resin bound adds no structural strength, so cracks, soft spots or a failing base will show through; survey and core the base first, repair it, and regulate dips before the resin goes down rather than filling them with extra kits.