Are Resin Driveways Permeable? A Gloucester Drainage Guide

Resin-bound is not the same as resin-bonded

With resin-bound aggregate, stones and resin are mixed and laid as a relatively open textured layer, typically allowing water through when installed properly. Resin-bonded aggregate is scattered onto a resin coating and is generally not a permeable surface. Check which system the quotation actually describes.

Water needs somewhere to go

A permeable resin layer over impermeable, poorly graded or blocked construction cannot solve all drainage problems by itself. The sub-base, falls, existing ground conditions and any channels or soakaways should be considered together. A compact urban frontage may need careful water-routing at the pavement edge; a larger suburban drive may involve more excavation and edging.

• Inspect existing puddles and the direction of the slope
• Ask what lies below the proposed resin layer
• Confirm the planned water destination rather than assuming the surface is enough

Planning and front-garden considerations

UK permitted development rules for front-garden paving can depend on area, permeability and whether surface water is directed to a suitable permeable area within the property. Other constraints may apply; check current local planning guidance for the specific job. For Gloucester front gardens, confirm whether water runs to a permeable area within the property rather than towards the highway.

Drainage questions for your installer

Ask whether any water will run towards the house, a neighbour or the highway, and whether channels, borders or a rebuilt permeable sub-base are needed. Existing concrete, ageing tarmac and mixed patchwork bases need assessing before a resin-bound overlay. An installer should assess levels before recommending a finish.

• Where does water go during heavy rain?
• Is the existing base suitable for a permeable build-up?
• Are extra drainage components priced into the proposal?