Resin Driveway Cleaning: Bound vs Bonded Surfaces

Resin bound or resin bonded?

A resin bound surface mixes aggregate and resin together and trowels it smooth. It is usually permeable, so water soaks through to the base. A resin bonded surface has loose stone scattered onto a layer of resin; it is not permeable, and some loose stone is always present on top.

Knowing which you have changes the approach. If you are not sure, send a close-up photograph and we can usually tell.

What goes wrong on resin

Green algae appears in shaded areas and where water lingers. Moss and weeds take hold at the edges and around drains, usually in soil and debris rather than in the resin itself. On bound surfaces, fine silt fills the pores and puddles start to appear where water used to vanish.

UV can yellow some resins over time, and that discolouration is in the material, not on it, so cleaning will not remove it.

Gentle methods matter

Resin is softer than stone. Very high pressure held close can dislodge aggregate, and some solvents and strong chemicals can soften or discolour the resin. Hot water and steam units vary, and excessive heat is generally best avoided on resin.

We use a controlled wash and suitable brushes, with any treatment for algae chosen for compatibility with resin surfaces. The detail is confirmed when we have seen the drive.

Clearing the edges and drains

Most of the visible growth sits along the borders, beside walls and around channel drains. Removing that soil and debris, and lifting weeds by the root, deals with the source rather than repeatedly washing the surface.

Keeping linear drains clear also stops water backing up across the resin in heavy rain.

Restoring permeability

A bound surface that has started to puddle often improves once the silt is washed out of the pores. Regular sweeping with a stiff brush helps prevent the problem returning. If puddling continues after cleaning, the base or installation may be the cause, which is a matter for the installer.

Do not try to fix poor drainage with more pressure; it tends to damage the surface without curing the cause.

Simple upkeep between cleans

Brush the drive every few weeks, more often under trees. Remove fallen leaves before they rot and stain. Avoid dragging heavy metal objects or using sharp tools to scrape weeds. Mop up oil promptly, because some oils can mark resin.

Our driveway cleaning frequency guide gives a realistic schedule.

Leaves, sap and autumn staining

Resin drives under trees take the brunt of autumn. Wet leaves left in piles leach tannins that can mark lighter aggregates, and sap from lime or sycamore trees leaves a sticky film that catches dust. Brushing leaves away every few days during autumn makes the biggest difference.

Where staining has already set in, cleaning usually lightens it considerably. Very old marks in pale resin can leave a faint shadow, and we will say so before starting rather than promise a perfect match.

Who to call for repairs

Cracks, loose patches and areas where the surface has lifted from its base are installation or repair issues. Cleaning will make them easier to see but cannot bond them back. The original installer, or a resin specialist, is the right person to assess them.

Mentioning damage when you ask for a quote helps us avoid working over a weak area and making it worse.

Getting a resin drive cleaned

Tell us whether the drive is bound or bonded if you know, how old it is, and where the problem areas are. Our driveway cleaning service covers resin surfaces with a gentle approach, and quotes are free.