Understanding Resin Bound Bases

Installing a resin driveway is as important as mixing and laying the system.

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

A resin bound installation has two bases. The base and the subbase are the key components. 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 solid sub-base is essential for strength and stability. It also serves as a platform to work on the base.

What sub-base is the best for resin bound systems and how do you choose it?

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 is recommended if the base is not permeable and has sufficient slope to allow water flow into 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 base for tarmac

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 among the most common building materials. 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.

C25 smooth brushed concrete is recommended as the base for a concrete course. 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?

There are some things you should do before you lay a resin bound surface on an old base or binder course. These are:

  • Are there any steps you need to work?
  • Is the base cracked? These cracks need to be sealed with a layer membrane.
  • The area must be remediated to a minimum of 200mm depth and filled with 100mm MOT type 1 MOT core and 100mm concrete.
  • Be sure to place an edge on any boundary. The resin-bound surface can be damaged if the boundary is removed.
  • Do you need edging details? Concrete kerbing or block should be installed 18mm above the base edge.
  • You should thoroughly clean the base with a power washer, with any organic material and debris removed.
  • Before you lay the resin bound surface, your surface must 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 eliteresindrives@gmail.com or visit our website www.resinbounddriveways.net