Resin Bound Driveway questions answered in plain English

An 18mm UV-stable resin bound overlay laid over a sound existing tarmac or concrete driveway costs €65 to €95 per m² (€3,250 to €4,750 for a typical 50 m² 2-car driveway). If your current surface is gravel, grass or sinking cobblelock and needs a full dig-out with a compacted Clause 804 sub-base and open-graded tarmac binder course, the full installation costs €95 to €140 per m² (€4,750 to €7,000 for 50 m²).

In a resin bound driveway, kiln-dried natural stones and clear polyurethane resin are mixed thoroughly in a forced-action mixer and hand-trowelled to a smooth, flat 18mm layer with tiny microscopic voids that let rainwater drain straight through. In resin bonded, resin is simply rolled onto the ground and loose gravel scattered on top — leaving a rough, non-permeable surface that sheds loose stones.

Yes, provided the tarmac or concrete is structurally sound with no sinking or rocking slabs. Monolithic concrete is pressure-washed, any cracks are chased and stitched with epoxy mesh, and an epoxy primer with broadcast sand is applied before trowelling 18mm of resin bound stone (€65 to €95/m²). Never lay resin bound directly over block paving (cobblelock), as the individual bricks move and crack the resin.

As long as your installer uses 100% aliphatic UV-stable polyurethane resin, it will not yellow in sunlight or leave dark shadow patches under parked cars. And because there are no sand joints like cobblelock, weeds cannot root from underneath — you simply sweep or rinse off wind-blown seeds twice a year.

Under Class 6 of the Planning and Development Regulations, surfacing a front garden over 5 m² is exempt from planning permission when the surface is porous or drains within the property curtilage. A full SuDS permeable resin bound build (18mm resin over open-graded tarmac and clean stone) drains rainwater directly through the driveway.

Resin bound gives a decorative natural aggregate finish with zero loose gravel or puddles on suburban and detached homes up to 150 m². For very long rural avenues (200 m²+) or yards carrying farm tractors and heavy lorries, compare hot-rolled SMA asphalt and tar-and-chip prices on our sister guide at asphaltdriveways.ie.

You can walk on a newly trowelled resin bound surface after 6 to 8 hours in dry mild weather, and park cars on it after 24 to 48 hours once the polyurethane binder has reached full traffic cure.

Cured polyurethane resin coats every stone and resists petrol, diesel and engine oil. Fresh drips wipe or rinse off with warm soapy water and a stiff brush or flat-fan pressure washer.

Yes, when laid to a full 18mm driveway thickness over a sound concrete slab or properly compacted Clause 804 sub-base and 60mm open-graded tarmac binder course.

Even a tiny amount of moisture in the stone reacts with liquid polyurethane resin during mixing, causing foaming, white clouding (blooming) and a weak bond. Reputable installers keep bagged kiln-dried stone under cover until it enters the forced-action mixer.

Resin bound surfacing must be mixed and hand-trowelled during a dry weather window with air and ground temperatures at 5°C or above and no rain forecast during the initial 4 to 6 hour set.

Every open perimeter needs a solid stop edge for the trowel to work against — either a mortar-bedded granite cobble border (100×100mm or 200×100mm setts) or an 18mm extruded aluminium L-bead.