How many paving slabs per square metre

Allowing for complexity of the design, cuts and breaks. If a slab measures x mm or 0. If using a mm x mm slab, multiply the area you need by 0. Posted in Blog. Calculating Paving surface area. It's a long time since we did this at school, right? And if you don't use measurements in your everyday life it can be difficult to remember how to do this. To calculate the square meters of paved area: Break your area up into squares or rectangles and multiply the length by the width.

Add up the total number of square meters. You will need to take into account the number of cuts and the laying pattern chosen. You will also need to allow for wastage. Firstly, decide on what size paving slabs and what laying pattern you are going to use. Below is a rough guide to the number of paving slabs you need per square metre based on our most common slab sizes.

You may need fewer or more slabs than this if you are using a wide or narrow joint width. For other size combinations, you can also calculate how many of each size slab you need, as in the following example:. If you need to work to a plan where you need a different number of each size slab, your best bet is to sketch the design out on graph paper.

Experienced landscapers should be able to work out a random laying pattern using a roughly equal quantity of each size. Below is a rough number of setts you need per square metre based on our most common sett sizes. You may need fewer or more setts depending on your joint width. To calculate how much aggregate you need for a sub-base, mortar bed or driveway, multiply the width x length x depth of the area you are covering.

As a guide, a bulk bag approx kg or 0. A poly bag approx kg or 0. How much cement you need depends on the strength of mix you are using, for example would mean 3 parts aggregate to 1 part cement. Keep reading to see how it works:. We've built a handy calculator that lets you know just how many slabs of each size you will need to cover the area you need to.

That's it. The calculator will then let you know just how many slabs would be needed depending on the size of slab you want. If you are going for the mixed size patio packs, the calculator will display the total square meterage required and the subsequent number of each size slab required. The slabs in a patio pack are the following sizes:.

The patio packs come in an even mix of each size, so the calculator tells you how many of each size slab you will need to cover your entire area.