The Essential Sub-Base for Resin Bound Installation: A Comprehensive Guide by Poly UP Ltd
When planning to install a resin bound driveway, one of the most critical yet often overlooked aspects is the sub-base. At Poly UP Ltd, we believe that a high-quality sub-base is the cornerstone of a durable, long-lasting resin bound surface. In this blog, we will guide you through everything you need to know about preparing the ground for a flawless resin installation, ensuring your investment stands the test of time.
What is a Resin Bound Surface?
A resin bound surface is a combination of natural aggregates mixed with a UV-stable resin, providing a smooth, durable, and aesthetically pleasing surface. Popular for driveways, pathways, and patios, it offers excellent water permeability and a wide range of customisable design options. However, its performance is only as good as the base it’s laid on.
Why the Sub-Base Matters
The sub-base acts as the foundation for your resin bound installation. A poorly prepared base can lead to cracking, sinking, or even complete failure of the surface. At Poly UP Ltd, we emphasise that the sub-base needs to be solid, stable, and, depending on your project, either permeable or non-permeable.
Suitable Sub-Bases for Resin Bound Installations
Choosing the correct sub-base for your resin bound driveway or patio is key to a successful installation. The following materials are considered ideal:
1. Permeable Tarmac/Asphalt
Permeable tarmac or asphalt is one of the best sub-base options for resin bound surfaces, especially if you are aiming for a fully SUDS-compliant (Sustainable Urban Drainage System) surface. It allows water to drain through, preventing pooling and helping to manage surface water effectively.
Before installation, the tarmac should be in excellent condition, free from major cracks or damages. At Poly UP Ltd, we recommend cleaning the surface thoroughly to ensure proper adhesion of the resin.
2. Open Grade Binder Course
An open grade binder course, also known as a porous concrete base, is another excellent choice. Its porous nature allows water to pass through easily, making it ideal for resin bound installations where water permeability is a priority. It is essential that this type of base is laid correctly and allowed to cure for at least seven days before applying the resin-bound system.
3. Existing Stable Concrete
If your project requires a non-permeable surface, a stable existing concrete base can work well. However, it must be solid, crack-free, and in good overall condition. In many cases, Poly UP Ltd can utilise an existing concrete surface as long as it meets these criteria.
4. MOT Type 3 Sub-Base
For newly prepared surfaces, we highly recommend MOT Type 3 as the sub-base. It is a granular material that offers excellent drainage properties and is particularly suitable for creating a solid foundation for resin bound driveways and pathways. Compacting this base to the correct density is vital to prevent future movement or settlement.
Unsuitable Sub-Bases for Resin Bound Surfaces
At Poly UP Ltd, we advise against using certain materials as sub-bases for resin bound installations:
1. Block Paving
Block paving is not suitable as a sub-base for resin bound surfaces due to its potential for movement. Over time, this movement can cause the resin to crack, undermining its strength and longevity.
2. Paving Slabs
Similarly, paving slabs, while solid, do not provide the level of stability required for a resin-bound surface. The joints between the slabs can lead to instability and potential cracking in the resin layer.
3. Soil or Grass Surfaces
Installing a resin bound surface directly onto soil or grass is not recommended. These surfaces lack the stability needed to support the resin, and over time, the surface will sink or become uneven. Groundwork preparation, including excavation and the installation of a proper sub-base, is essential.
The Importance of Ground Preparation
At Poly UP Ltd, we emphasise that proper ground preparation is critical to the success of any resin bound installation. Ensuring that the sub-base is solid, level, and free from organic materials like roots or weeds will prevent future issues such as sinking or cracking. Additionally, the sub-base must be laid at the correct depth to support the weight of vehicles if you are installing a resin bound driveway.
Steps to Prepare a Sub-Base for Resin Bound Installations
- Excavation: Begin by removing any existing surface material, such as grass, soil, or paving. Depending on the size and use of the surface, the excavation depth typically ranges from 100mm to 250mm.
- Sub-Base Installation: Lay down a suitable sub-base, such as MOT Type 3 or permeable tarmac, and compact it to ensure stability.
- Apply a Base Course (if required): In some cases, an additional binder course may be necessary to provide extra strength and permeability.
- Resin Installation: Once the sub-base is set and stable, your resin-bound surface can be installed by experienced professionals, such as the team at Poly UP Ltd.
Conclusion
Preparing the right sub-base is essential for a successful resin bound installation. A high-quality, properly compacted, and stable sub-base will ensure your resin surface looks stunning and lasts for years. At Poly UP Ltd, we pride ourselves on delivering superior resin-bound surfaces with meticulous attention to groundwork preparation.
Ready to transform your outdoor space with a durable, stunning resin bound driveway? Contact Poly UP Ltd today for expert advice and professional installation services. Let us create a driveway that not only boosts your home’s kerb appeal but also stands the test of time.