Block Paving Calculator UK – Paver Packs, Sand & Jointing Estimator
Estimate paver count, packs, laying-course sand and kiln-dried jointing sand. Add a waste allowance and pick your shape.
Block Paving & Paver Calculator Guide (UK 2025)
The Block Paving & Paver Calculator helps you estimate how many blocks, packs, and how much sand you’ll need for a patio, path or driveway. It’s designed for all shapes — rectangular, circular or custom areas — and includes average 2025 UK material costs.
How the Calculator Works
Enter your project area, paver size, joint gap and sand depth. The calculator returns the number of pavers, packs, laying-course sand, and jointing sand required — including waste allowance.
Typical UK Block Paving Prices (2025)
| Material | Unit | Average Cost (ex VAT) |
|---|---|---|
| Block Pavers (200×100 mm) | per m² | £18 – £40 |
| MOT Type 1 Sub-Base | per tonne | £35 – £55 |
| Sharp Sand (Laying Bed) | per tonne | £30 – £50 |
| Kiln-Dried Jointing Sand | 25 kg bag | £4 – £8 |
| Edging Blocks | each | £1.50 – £4.00 |
Example Material Quantities
| Area (m²) | Pavers (approx) | Packs | Laying Sand (t) | Jointing Sand (kg) |
|---|---|---|---|---|
| 10 m² patio | ≈ 480 | 1 | 0.8 | 70 |
| 25 m² drive | ≈ 1,200 | 2–3 | 1.8 | 175 |
| 50 m² driveway | ≈ 2,400 | 4–5 | 3.6 | 350 |
Waste & Extra Allowances
- Cutting loss: 5–10 % for square layouts, up to 15 % for curves.
- Pattern waste: 5 % (stretcher), 10 % (herringbone), 15 % (random).
- Extra sand: Keep one spare bulk bag for maintenance and joint top-ups.
Affiliate Tools & Materials
- Block Pavers – Travis Perkins
- Sharp Sand Bulk Bag – Screwfix
- Kiln-Dried Sand – Amazon
- Plate Compactor – Amazon Tools
Disclosure: Some links are affiliate and may earn a small commission that supports SmartBuildCalc at no extra cost to you.
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Frequently Asked Questions
How deep should block paving be?
Patios require 100 mm sub-base plus 40–50 mm sand. Driveways need 150 mm sub-base and 50 mm sand for load bearing.
How many blocks per m²?
Roughly 50 blocks (200×100 mm) per m² including 3 mm joints.
How much sand for block paving?
Allow about 0.08 tonnes per m² for a 50 mm sand bed.
How many bags of jointing sand do I need?
One 25 kg bag covers 3–4 m² depending on joint width and block type.
