Resin bound vs resin bonded: the difference that matters

Last updated: August 2026.

One letter, two completely different surfaces

The confusion is understandable: the names differ by two letters and both involve stone and resin. But the build methods have nothing in common, and the surfaces that result behave differently in almost every way that matters, drainage, grip, lifespan, repairability and price. Choosing between them is not a style preference; it is an engineering decision about your specific plot.

Resin bound is made by coating kiln-dried aggregate in two-part polyurethane resin inside a forced-action mixer, then hand-trowelling the mix to a seamless mat 15 to 18mm thick. Every stone is fully encapsulated, and the voids left between particles let rainwater pass straight through the surface. Resin bonded is made by roller-applying a film of resin onto the base, then broadcasting dry aggregate across it so the stone adheres to the surface. The result is a thin, textured layer, 4 to 8mm, that looks and sounds like gravel but never moves.

The drainage question decides most Teesside jobs

Since 2008, paving more than 5m² of a front garden with a non-permeable surface requires planning permission unless runoff drains to a permeable area like a lawn or border. Resin bound sails through: the surface itself is the drainage, infiltrating where the rain lands, which is why it has become the default front-garden surface from Acklam to Ingleby Barwick. Resin bonded is non-permeable, so it needs the runoff question answered: a fall towards a border, a channel drain at the threshold, or a soakaway. On flat plots with nowhere for water to go, that can add £250 to £700 and real design thought. On plots where drainage already works, it is a non-issue.

Where bonded genuinely wins

Grip. The exposed aggregate texture of a bonded surface out-tractions everything else in wet and frosty conditions, which matters on the pitched drives around Hartburn, Fairfield and the banks towards the Tees. Bound surfaces are not slippery, the aggregate texture gives good purchase, but bonded is in another league underfoot and under tyre. The second win is aesthetic: for period properties, particularly around Norton and Yarm's older streets, the gravel look sits more naturally than a smooth modern finish, and bonded delivers gravel's appearance without loose stone migrating onto the pavement. The third win is price: at £50 to £85/m² it undercuts bound by roughly a quarter.

Where bound pulls away

Longevity and upkeep. A bound surface's 15 to 18mm of resin-rich mat, laid over a porous engineered base, delivers 15 to 25 years; bonded's thin scatter coat delivers 8 to 15 and can shed stone at high-stress points like tight turning circles. Bound has no loose aggregate at all after its initial sweep; bonded sheds a little excess in its first weeks and may need local top-ups over its life. Bound's permeability also means puddles cannot form, so there is less standing water to freeze, less algae film in shaded corners, and less strain on the surface through Teesside's freeze-thaw winters. Repairs are cleaner too: bound patches are re-trowelled in matched blends, while bonded patches show their texture difference more readily.

A decision in three questions

Ask in order. First: where does the water go? If the answer is unclear, choose bound. Second: how steep is the drive, and how much does winter grip matter? If the slope is real and drainage is already solved, choose bonded. Third: how long do you want to forget about it? If the answer is decades, choose bound with UV-stable resin, named in the quote. For pricing the decision, see the cost guide; for what happens over the years, the lifespan and maintenance guide; for the service detail, resin bound and resin bonded.