Resin Bound vs Resin Bonded Driveways: The Difference Explained

Resin bound and resin bonded sound almost identical, but they are two different surfaces. Resin bound mixes the stone into the resin before it is laid, giving a smooth, permeable finish. Resin bonded spreads resin on the base and scatters stone on top, giving a textured, gravel-like finish that water cannot pass through. For most driveways, resin bound is the one people actually want.

How resin bound is made

In a resin bound system, dried aggregate and a clear two-part resin are mixed together in a forced-action mixer on site. The mix is tipped out and trowelled by hand onto a prepared base, typically at 15 to 18mm thick for a driveway. Every stone is fully coated and bonded to its neighbours, with small voids left between them.

Those voids are what make resin bound permeable. Rain drains straight through the surface into the base below, provided the base itself is permeable (open-graded tarmac or a porous concrete, or a sub-base that drains).

The finish is smooth underfoot, with no loose stones. It is comfortable to walk on, easy for pushchairs and wheelchairs, and it can be swept and power-washed.

How resin bonded is made

In a resin bonded system, a layer of resin is spread over a solid base, and loose aggregate is scattered onto it while the resin is wet. Once cured, the excess stone is swept off. The result looks like a gravel drive, with a rough, textured surface, but the stones stay put.

Because the resin forms a continuous layer over a solid base, resin bonded is not permeable. Water runs off it rather than through it. Over time, stones on the surface can loosen and shed, particularly where cars turn.

Side by side

• Finish: bound is smooth and even. Bonded is rough and gravel-textured.

• Drainage: bound is permeable over the right base. Bonded is not.

• Thickness: bound is a 15 to 18mm layer for a driveway. Bonded is a single stone layer over a thin resin coat.

• Loose stones: bound should have none. Bonded sheds some stones over time.

• Grip: both give good grip. Bonded feels grittier underfoot.

• Typical use: bound for driveways, paths and patios. Bonded for slopes, access roads and areas where extra grip matters more than the look.

Which is right for a driveway?

For most home driveways, resin bound is the better choice, and it is the system we recommend for most of the driveways in Kettering and the surrounding towns that we surface in resin. It meets the front garden drainage rules more easily, it looks cleaner, it does not shed stones into the house on shoes, and it is easier to keep tidy.

Resin bonded still has its place on a steep drive where grip is the priority, or where water already drains away through a channel and soakaway so permeability does not matter.

The rules on front gardens matter here. A new or replacement front driveway over 5 square metres needs either a permeable surface or drainage onto your own lawn or border, or it needs planning permission (our guide to driveway planning permission sets out the rule). Resin bound laid over a permeable base satisfies that. Resin bonded usually needs a separate drainage solution.

Why the base decides everything

Whichever resin system you choose, it is only as good as what is under it. Resin is a thin wearing layer, not a structural one. If the base cracks, the resin cracks with it. If the base does not drain, a resin bound surface loses its permeability.

On a driveway that means a properly dug-out and compacted sub-base, a suitable binder course (permeable tarmac is common for resin bound), solid edging to stop the edges breaking up, and falls that send any surface water somewhere sensible. Laying resin over an old, cracked concrete drive to save money is the most common reason these surfaces fail early.

This is also why two quotes for "a resin drive" can be so far apart. One may include a new base and the other may be an overlay on what is already there, which is the biggest single swing in resin driveway cost.

UV stability and colour

Resin comes in two main types: aromatic and aliphatic. Aromatic resins are cheaper but tend to darken and yellow in sunlight, which shows most on light-coloured stone. Aliphatic (UV-stable) resin holds its colour and is the right choice for any surface in daylight. Ask which resin a quote is based on.

Resin bound and bonded: questions, answered

Can resin bonded be converted to resin bound?

Not by adding a layer. The surface is too textured and not permeable. It would need taking up, or at least a new base, before a resin bound layer could go down.

Does resin bound get slippery?

A well-laid resin bound surface has decent grip in the wet because of its texture. On slopes, a finer anti-slip glass can be added to the mix for extra grip.

How long does each last?

On a sound base, resin bound commonly lasts 15 to 25 years with UV-stable resin, and our look at how hard wearing resin driveways are covers what shortens that. Resin bonded tends to need topping up sooner, because surface stones wear loose.

Getting it right

If you want a smooth, permeable, low-maintenance driveway, resin bound on a proper base is the answer in most cases, and it stands up well to daily use. If you are planning a new drive, our team across Kettering and Northamptonshire can tell you which system suits your ground and whether the existing base is worth keeping, and we can match it to new patios in Kettering at the back. We lay the same systems further afield too, including resin driveways in Corby.