Bound, not bonded
The names sound alike but the two systems are very different. Resin-bound means the stone and resin are mixed together before laying, which gives a porous surface that water drains through. Resin-bonded means resin is spread on a base and loose stone is scattered over it. That surface is not porous and the stones can come away over time. We lay resin-bound.
Why the base matters
Resin is only as good as what is underneath it. The ideal base is new open-graded porous asphalt or a no-fines concrete over a compacted stone sub-base, so water that passes through the resin can keep going. An existing tarmac or concrete drive can sometimes be overlaid, but only if it is sound, with no cracks or soft spots, and has somewhere for water to go. If it isn't up to the job, we say so rather than lay over the problem.
Choosing a blend
Blends range from pale silver and buff to warm golds and dark bronze. A UV-stable resin keeps lighter colours from yellowing in the sun. Larger stone gives a more textured look; finer blends look smoother. We usually suggest a contrasting border in block or metal edging to frame the drive.
Weather and timing
Resin needs dry conditions and sensible temperatures to cure properly. On a damp Hartlepool day we wait rather than risk a poor finish, so dates sometimes move with the forecast. Once laid, it can be walked on after a few hours and driven on after a day or two, depending on the weather.
