Question 1

What is the most common paving slab size in the UK?

Accepted Answer

The most popular paving slab size in the UK is 600x600mm (2x2 feet). Other common sizes include 450x450mm, 600x300mm, and 900x600mm. Natural stone slabs often come in mixed size packs with random patterns.

Question 2

How much waste allowance should I add for paving?

Accepted Answer

For a standard rectangular patio, allow 5-10% for waste. If your patio has curves, angles, or you are cutting slabs to fit around obstacles, increase this to 10-15%. Diagonal laying patterns also create more waste than straight patterns.

Question 3

What joint width should I use between paving slabs?

Accepted Answer

A joint width of 8-12mm is standard for most paving projects. Porcelain slabs can use narrower 3-5mm joints. Natural stone typically needs wider 10-15mm joints to accommodate slight size variations between slabs.

Patio Paving Calculator

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Patio Paving Calculator

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