Patio Drainage: Why It Matters and How to Get It Right

A patio isn’t just about the slabs — it’s about how water moves across and around the surface. Poor drainage leads to puddles, algae, frost damage and long‑term deterioration.

Here’s what you need to know.

1. Correct Falls (Gradients)

Your patio should be laid with a slight gradient to direct water away from your home.

2. Drainage Channels

In some areas, channels or soakaways are needed to manage water properly.

3. Permeable Materials

Some materials, like resin or certain gravels, help water drain naturally.

4. Proper Sub‑Base Preparation

A compacted, well‑prepared base prevents water from sitting under the slabs.