When preparing for a new patio installation, knowing exactly how much aggregate you need is key to achieving a durable, attractive and cost-effective result. Whether you want a permeable surface for rain management or simply an elegant decorative finish, selecting the right aggregate and understanding quantities helps you save both time and money.

This guide covers how to measure and calculate the aggregate requirements for your patio area, compares three popular resin-bound aggregate solutions, and explains which products best suit different outdoor needs in the UK climate. Explore our complete range for pebble floors to find the ideal match for your garden or terrace.

Quick Comparison: Aggregate Options for Patios

How to Estimate Aggregate for Resin-Bound Patios

Begin by measuring the total surface area of your planned patio, using length × width to determine square metres. Next, consider the recommended application thickness, which commonly ranges from 12mm to 20mm for resin-bound systems.

Aggregate coverage rates depend on your chosen product and intended thickness:

• Washed Pebbles for Permeable Floors 25kg are often calculated for use at 15–20mm thickness, ideal for outdoor use with resin binders. As a general rule, one 25kg bag can cover approximately 1m² at a 15mm depth (exact coverage may vary).
• For resin-bound installations using Polirock Polyurethane Binder, blend at roughly 6–8kg of aggregate per 1kg of binder. This ratio helps you estimate both the volume of stones and binder required per square metre based on your patio size.
• The Flowstone Complete Permeable Floor Kit removes the guesswork, as each kit is sized specifically by surface area and includes guidance for resin and aggregate quantities according to the selected colour and finish.

If you’d like a tailored calculation for your patio, our team is happy to help. Simply provide your patio’s measurements and desired finish, and we’ll recommend the quantities and the most suitable product.

Benefits of Using Resin-Bound Aggregates for Patios

Opting for a resin-bound aggregate patio brings many functional and aesthetic advantages. Washed Pebbles for Permeable Floors stand out for their Eco-Friendly makeup and Excellent Drainage, reducing surface water and helping to prevent puddles during rainy UK spells.

If you intend to use white stones and need a binder that preserves clarity, the Polirock Polyurethane Binder offers exceptional resistance to UV and weather without yellowing. This means your light-coloured patio will stay bright and clean-looking for years.

For hassle-free installation and a complete solution, the Flowstone Kit is ideal. It ensures a Cost-effective renewal for aged driveways and patios by combining aggregate, resin, and clear step-by-step instructions, accessible even to novices.

All these systems provide versatility in finish and colour, letting homeowners create unique, custom looks that complement their garden or landscape design. You can also combine pebbles with marble or granite granules for even more decorative variety.

Choosing the Right Aggregate Product for Your Patio

The best aggregate option depends on your desired look, usage, and installation preference. The Washed Pebbles for Permeable Floors 25kg – Outdoor Resin-Bound Surfaces product is straightforward for those looking to combine decorative stones with a resin binder. It’s best for garden paths, patios, and terraces—especially if permeability is a priority.

If your intent is to use white or light stones specifically and you want a clear, weatherproof, and anti-slip finish, opt for the Polirock Polyurethane Binder for White Stones. The properties ensure no yellowing, making it ideal where colour integrity is crucial.

For anyone preferring a ready-made kit with Simple application and clear guidance according to chosen colour and finish, the Flowstone Complete Permeable Floor Kit with Pebbles and Resin brings convenience and peace of mind. It’s particularly recommended for larger patio projects or driveways where drainage and durability are non-negotiable.

Browse our full pebble floors range for additional finishes and inspiration.