In short: resin bound is a 15 to 18 mm layer of stone and resin laid over a sound base. It drains through if the base beneath drains, needs no planning permission when permeable, and is usually laid in one to two days for a typical drive once the base is ready. The base, not the resin, is where most of the cost and most of the risk sits.
What a resin bound driveway is
Resin bound surfacing is a mix of dried, graded natural stone (typically 1 to 3 mm and 2 to 5 mm aggregates, sometimes with fine sand) coated in a two-part polyurethane resin. The mix is laid wet and hand-trowelled to a smooth, even finish. Because every stone is fully coated and the stones are only partly packed, the cured surface has small voids that let water pass through.
It is different from resin bonded, where loose stone is scattered onto a layer of resin. Bonded gives a textured, gravel-like look but is not permeable and can shed loose stones over time. If a quote just says "resin driveway", ask which it is. Our bound vs bonded guide explains the difference in detail.
What sits underneath, and why it matters most
Resin bound is thin. It relies completely on the base for strength and drainage. There are two routes:
| Route | When it suits | What to check |
|---|---|---|
| Overlay onto existing tarmac or concrete | Base is sound, level, crack-free and has the right falls | Cracks and joints need treating or they reflect through. A solid base will not drain, so falls and channel drains matter. |
| New permeable build-up | Old drive has failed, is block paving, gravel or soil, or you want drainage to ground | Depth of excavation, open-graded sub-base (Type 3 or 4/20), geotextile, permeable macadam binder course, edge restraint. |
Government guidance on front-garden paving puts typical driveway construction at 200 to 250 mm beneath the surface. A quote that does not say what will be laid under the resin, and how deep, is not a complete quote.
Resin quality: UV-stable or not
Outdoor resin bound should use a UV-stable (aliphatic) resin. Non-UV-stable (aromatic) resins are cheaper and are designed for coloured or shaded areas; in sunlight they can darken or yellow, in some cases within weeks according to one manufacturer's installer guide. Lighter aggregates show this most. Ask for the resin product name and whether it is UV-stable.
Lifespan and maintenance
Industry sources commonly quote 15 to 25 years for a well-installed resin bound driveway. In practice the lifespan depends on the base, the resin grade, how well the mix was laid and how the surface is treated. Maintenance is light: sweep regularly, wash a couple of times a year, and deal with oil spills promptly. A pressure washer is fine at moderate settings with the lance held well back from the surface. See our maintenance guide.
Colours and borders
Most systems offer a wide range of natural stone blends, from silver greys and charcoals to golds and buffs, plus bespoke mixes. Lighter colours show tyre marks and dirt more; mid-tone blends are the most forgiving. A contrasting block or granite sett border frames the drive and acts as edge restraint. Always approve colour from a physical sample on site. Browse the colour guide.
Planning permission
A permeable resin bound driveway, or one that drains to a lawn or border on your property, does not normally need planning permission in England. An impermeable surface over 5 m² that drains onto the road does. Conservation areas, listed buildings, flats and new dropped kerbs have their own rules, and Guildford borough has 40 conservation areas. Our planning guide covers the detail.
What a good quotation includes
- The resin system and aggregate blend by name, and whether the resin is UV-stable
- Laid depth of the resin layer
- Whether it is an overlay or a new build-up, with the depth and material of each layer
- How surface water will be managed: drainage to ground, falls, channels or soakaway
- Edging and any border detail
- Preparation of existing cracks, joints, manhole covers and thresholds
- Disposal of waste and protection of adjoining surfaces
- What the guarantee covers, for how long, and who provides it
- VAT, payment stages and start date
Use our installer checklist to compare quotes line by line.
Frequently asked questions
How thick should a resin bound driveway be?
Most systems specify around 18 mm for areas that take cars and 15 mm for footpaths. One BBA-certified manufacturer gives 18 mm as the minimum for a certified driveway installation. Ask which system and depth a quote is for.
Can I drive on it straight away?
No. Resin needs time to cure, which depends on temperature. Foot traffic is usually possible within hours on a warm day; installers typically ask you to keep cars off for longer. Follow the installer's written instructions.
Is resin bound slippery?
Correctly mixed resin bound has an open, textured finish and is not usually slippery. On slopes or around pools, installers can add a fine anti-slip grit. See are resin driveways slippery?.
Will weeds grow through?
Weeds cannot root through a correctly laid, sealed surface, but seeds can land in dirt that collects on top. Regular sweeping prevents this. A weed membrane belongs under the sub-base on new builds.
Related guides
What a resin driveway costs
The five factors that decide the price, published industry ranges, and how to compare quotes fairly.
How resin driveways are installed
Survey to curing, step by step, with the weather limits and checks that separate good work from bad.
Resin bound vs resin bonded
Two different systems with different finishes, drainage and planning implications.
Installer checklist
20 questions to ask before you sign, covering base, resin, drainage, guarantee, insurance and payment.