Material calculator

Bedding grit calculator

The bedding layer is the grit directly under the pavers. It evens out the last unevenness so every paver sits level. The planner calculates it from your surface area, on the same shopping list as the pavers and the sub-base.

How the planner calculates bedding

  • Bedding is always 4 cm of 2/5 mm grit, whatever the load class.
  • Volume is area × 4 cm. The weight uses about 1.5 t per m³.
  • Pavers, crushed stone and grit end up on one list, so you can order them together.

How to start

  • Enter the dimensions or draw the outline of your surface.
  • Pick paver, pattern and load class.
  • The shopping list shows grit, crushed stone and pavers together.

FAQ

Which grain size do I need for the bedding?

2/5 mm grit is common, 1/3 mm is also used. The right grain depends on the paver format. The planner gives you the quantity; ask your builders’ merchant which grain suits your pavers.

How thick should the bedding be?

3 to 5 cm after compaction is standard, and the planner uses 4 cm. You rarely need more, because the crushed stone underneath carries the load.

Key figures for this scenario

The figures come from the same formulas the planner uses. They leave out joints and waste; the planner's shopping list adds both for your surface shape.

Paver format
Standard rectangular paver (200x100 mm)
Laying pattern
Running bond
Pavers per m²
50
Load class
Pedestrian
Base layer
20 cm crushed stone 0/32 mm
Bedding layer
4 cm grit 2/5 mm
Excavation depth
30 cm

Example: a 20 m² surface

For 20 m² you need about 1,000 pavers, 4.8 m³ of crushed stone (about 8.16 t, including a 20% compaction reserve) and 0.8 m³ of grit (about 1.2 t). Dig about 30 cm deep: 20 cm of base, 4 cm of bedding and 6 cm of paver.

Send feedback

Type of post

Approved feedback is public. Please don't include personal data such as your email address or phone number.Privacy policy