How much gravel do I need per square metre?
For a decorative gravel finish at 50mm deep, allow about 75kg to 80kg per square metre, so a 850kg bulk bag covers roughly 10 to 11 square metres.
Loose gravel is usually laid around 50mm deep for a decorative finish. At that depth you need roughly 75kg to 80kg per square metre, since aggregate weighs in around 1.5 tonnes per cubic metre.
A standard 850kg bulk bag therefore covers about 10 to 11 square metres at 50mm. Driveways need a deeper layer over a sound sub base, so increase the quantity accordingly.
Otis converts the area and depth into bulk bags of the chosen aggregate, checks stock and prices it, along with any membrane or edging, for the account.
General guidance for the trade. Always follow current Building Regulations, manufacturer instructions and the specifics of the job.
See what Otis would capture for you
Book a strategic call and we will model it against your own numbers.