Free Block Paving Calculator

This depends on the block size and laying pattern. Standard 200x100mm blocks work out at roughly 45-50 blocks per square metre, but larger format blocks need fewer, and herringbone patterns create slightly more cutting and waste than a stretcher bond. Your supplier or installer can confirm the exact figure for the block you choose.

Fitted cost per m² depends on block choice, laying pattern, excavation depth, access and sub-base condition, so it varies a lot job to job. The calculator above gives a rough guide based on area; for an accurate fitted price, get a written quote based on your actual site.

It varies. Basic concrete block paving and basic concrete slabs are often similarly priced, while premium blocks, porcelain or natural stone slabs cost more. Block paving has the advantage of being repairable block-by-block if it settles or gets damaged, which can save money over the years.

It's possible for a competent DIYer on a small, simple area, but most problems with block paving (sinking, poor falls, weak edges) come from an inadequate sub-base rather than the blocks themselves. Getting the excavation, compaction and drainage right is the hard part, which is why most driveways are installed professionally.

Standard block paving sheds most surface water rather than absorbing it, so proper falls and drainage are essential. Permeable block paving systems are designed to let water drain through the joints into the sub-base, which can help meet drainage rules on front gardens over a certain size.