Is Resin Bound Gravel the Cheaper Alternative to Concrete?

When considering the cost of surfacing materials for driveways, patios, or pathways,homeowners often compare resin bound gravel and concrete. Both have their unique properties and installation processes, but which one is cheaper? This article explores the costs associated with each material, helping you make an informed decision.

Before delving into the individual costs, it's essential to understand that the total price isn't just about the material itself. Transportation, labor, and preparation of the sub-base also contribute to the overall expense. Let's break down the costs of resin bound gravel and concrete step by step.

Resin Bound Gravel: Cost Breakdown

Resin bound gravel, a blend of natural aggregates and a high-tech resin, is known for its durability, permeability, and sleek finish. Here's a detailed cost breakdown:

Material Cost: The cost of resin bound gravel varies depending on the aggregate type (e.g., gravel, marble, or recycled glass) and the grade of resin. On average, you can expect to pay between $40 - $100 per square meter. Keep in mind that using higher-quality aggregates or specialist resins can increase this cost.

Base and Preparation

Before laying resin bound gravel, the sub-base must be prepared. Typically, this involves a layer of asphalt or concrete with a slope for drainage, followed by a layer of open-textured membrane to prevent unwanted weed growth. The cost of preparing the base usually ranges from $2 to $5 per square foot, including labor and materials.

Installation

The installation of resin bound gravel is relatively straightforward. The pre-mixed resin and aggregates are poured onto the prepared base and moved around using a heavy-duty screed to achieve a consistent depth of around 18-20mm. Labor costs for installation usually range from $5 to $8 per square meter.

Concrete: Cost Breakdown

Concrete is a durable and long-lasting surfacing material, but it's also heavier and less flexible than resin bound gravel. Here's a cost breakdown for concrete:

Material Cost: The cost of concrete varies depending on the mix and any added aggregates or decorative elements. Generally, you can expect to pay between $30 - $70 per square meter. However, high-end decorative concrete can cost up to $150 per square meter.

Base and Preparation

As with resin bound gravel, the sub-base for concrete should also be prepared with a suitable layer of asphalt or concrete, followed by a layer of membrane. The cost for base preparation remains similar, ranging from $2 to $5 per square foot.

Installation

Concrete_installation involves mixing concrete on-site or delivered in ready-mix trucks, pouring it onto the prepared base, and leveling it with a screed. Labor costs for concrete installation generally range from $6 to $10 per square meter, reflecting the heavier material and longer curing time required.

In conclusion, when considering the initial material costs, resin bound gravel may appear more expensive than concrete. However, when factoring in the preparation, installation, and lifecycle costs, the difference can narrow or even invert. Resin bound gravel's lighter weight, easier installation, and quicker repair times can lead to significant long-term savings. Moreover, its permeability and frost resistance mean it's low-maintenance,adding further value. When deciding between the two, it's crucial to weigh the upfront costs against the long-term benefits and choose the option that best fits your budget and needs.