Understanding Resin Bound Bases

It is important to have the right base for a resin driveway.

What is the distinction between a Base and a Sub-base?

Two bases are essential for resin bound installations: the base and sub-base. While it is confusing to differentiate between these two bases, they are equally important to understand and do the right thing.

What is the base

The base refers to the surface where the resin bound material is laid and bonds. This is also called the ‘binder route’. Sometimes the term “base” is incorrectly used to mean the entire structure under the resin bound system (including sub-base), so be sure to distinguish them.

What is the definition of a sub-base

The sub-base of resin bound surfaces is, as the name suggests the surface underneath the base (or ‘binder course’). A strong subbase will increase the strength of the system and provide a level platform for the base.

What is the best base for a resin-bound system?

If you plan on laying a permeable layer above your subbase (such an open course macadam), then your subbase should be MOT type 3 compacted. MOT Type 1 may be used if your sub-base is not permeable but has enough slope to allow water to flow to a drain.

To be SUDS compliant, a resin-bound system must be permeable.

What are the main Resin Bound Binder Course Materials?

Concrete and macadam are the main binder courses or base materials for resin bound systems. Each one has its own advantages and disadvantages.

The following information shows a typical base construction and best practices.

Resin-bound tarmac base

Macadam can be described as a construction material that is composed of layers of compacted broken stone, which are bound with tar or bitumen. If you need a permeable, SUDS-compliant system with a resin binding, Macadam can be used.

For macadam base courses, the recommended depth is 50mm.

Concrete base made of resin-bound concrete

Concrete is one the most used building materials worldwide. Concrete usage globally is more than double the amount of aluminum, wood, plastic, and steel combined.

A concrete base, or binder course, can be used for a resin-bound system. However it is not permeable. It will need drainage and adequate fall for water to drain into the drainage.

Concrete base courses should be built up with a C25 concrete smooth brushed concrete at a depth of 100mm. New concrete will require a primer. Concrete should also be fully cured before it is attached to a resin bound driveway.

Does an existing driveway base work well with Resin Bound?

You need to make sure you do not place a new resin bound material on an existing binder or base course. These are:

  • Are there any steps you need to work?
  • Is the base cracked? These cracks must be repaired with a membrane cross-layered.
  • Repaired areas that are badly damaged will need to be removed at a minimum depth 200mm.
  • Be sure to place an edge on any boundary. The resin-bound surface can be damaged if the boundary is removed.
  • Do you require any edging? If so, you will need to set concrete or block kerbing 18mm higher than the existing base edge.
  • It is important to clean the base well with a power-wash, with all organic matter removed.
  • Before laying the resin-bound surface, it is important that the surface be completely dry. Water and resin cannot mix.

Would your property benefit from a new, state of the art resin patiopath or driveway in Birstall? Contact us for a no obligation quote on 07595 510190. You can also email us thedrivewayexperts2015@gmail.com or visit our website www.resinbounddriveways.net