Patio slabs, sand and cement: table by size (UK)

Slabs, bed and sub-base for a patio by patio size
Patio	In feet	Patio area	Slabs, 600 × 600 mm	Sharp sand	Cement, 25 kg bags	Type 1, 100 mm deep	Your patio
2 × 3 m	6.6 × 9.8 ft	6 m²	18	1 bulk bag	3 bags	2 bulk bags	Open 2 × 3 m in the planner
3 × 3 m	9.8 × 9.8 ft	9 m²	27	1 bulk bag	5 bags	2 bulk bags	Open 3 × 3 m in the planner
3 × 4 m	9.8 × 13.1 ft	12 m²	36	1 bulk bag	6 bags	3 bulk bags	Open 3 × 4 m in the planner
3 × 5 m	9.8 × 16.4 ft	15 m²	45	1 bulk bag	7 bags	4 bulk bags	Open 3 × 5 m in the planner
4 × 4 m	13.1 × 13.1 ft	16 m²	48	1 bulk bag	8 bags	4 bulk bags	Open 4 × 4 m in the planner
4 × 5 m	13.1 × 16.4 ft	20 m²	60	2 bulk bags	10 bags	5 bulk bags	Open 4 × 5 m in the planner
4 × 6 m	13.1 × 19.7 ft	24 m²	71	2 bulk bags	12 bags	6 bulk bags	Open 4 × 6 m in the planner
5 × 5 m	16.4 × 16.4 ft	25 m²	74	2 bulk bags	12 bags	6 bulk bags	Open 5 × 5 m in the planner
5 × 6 m	16.4 × 19.7 ft	30 m²	89	2 bulk bags	14 bags	7 bulk bags	Open 5 × 6 m in the planner
6 × 6 m	19.7 × 19.7 ft	36 m²	107	3 bulk bags	17 bags	8 bulk bags	Open 6 × 6 m in the planner

Each row is the planner’s answer for that patio, worked out when this page was built. The link at the end of a row opens the planner with that patio filled in, to change the measurements and the product figures.

This is a material quantity, not a design: the fall, the levels against a damp-proof course, the sub-base and the drainage are the guides' and a designer's.

The slab is the planner's example, 600 × 600 mm with a 10 mm joint: each covers 0.3721 m² with its joint, so a square metre takes 2.69 slabs before the 10% for cuts. Another slab changes the count: enter its size on the patio calculator.

The bed is 30 mm of 1 part cement to 4 parts sharp sand, as two makers' laying guides give it. The dry sand and cement take more room than the bed they make, and the planner counts that; what each bag, tub and pail holds is a typical figure named on its line. Every patio here also takes a tub or more of primer and pails of jointing: the list each row opens counts them.

The Type 1 is 100 mm deep, the makers' usual minimum, a typical figure: the depth is the design's. How much sand and cement for a patio? works through the 3 × 4 m patio.

What the table assumes

Each patio is a rectangle.

Doors and windows are not used for a patio.
The slabs are rounded once, at the end, up to whole slabs; the sand, cement, sub-base, primer and jointing each once, up to whole bags, tubs or pails. Working uses unrounded figures.
The figures for paving slabs are generic examples, not the figures of any product. Enter the slab's size and the figures from its pack for a closer answer.

How this table was made

It was worked out when this page was built, by the same room planner and formulas as the editable list: each row is one patio sent through the planner. The sizes are round examples. The slab, its joint and the allowance for cuts are the planner’s labelled generic examples, not figures for a product; the bed, the sub-base and what each pack holds are typical figures whose sources it names.

AI tools drafted the page and automated tests compare every cell with the planner. It has not been checked by a tradesperson or anyone outside the build. No price is shown or used.

Before you use it

Measure the patio you will lay, and take off nothing for a step or a drain until its size is known. Check the figures against the patio, and follow each product's own instructions: they decide the bed, the joints and how the slabs are laid.

Built and checked with AI tools, not yet by a tradesperson or anyone outside the build. Estimates are arithmetic on your measurements and the figures shown with them: follow each product's own instructions.