How many bags of postcrete per fence post?
As a rule of thumb, allow one to two bags of fast setting post mix per fence post, with two bags common for a standard 100mm concrete or timber post in a normal 300mm diameter hole.
The exact number depends on post size and hole dimensions, but for a typical garden fence with a 100mm post set in a hole around 300mm across and 600mm deep, two bags of fast setting post mix per post is a safe working figure. Lighter fences with smaller posts may need only one bag.
For a run of fencing, multiply by the number of posts and add a little contingency. Otis does exactly this from the fence length and post spacing, then prices the post mix and the posts together against the account.
General guidance for the trade. Always follow current Building Regulations, manufacturer instructions and the specifics of the job.
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Book a strategic call and we will model it against your own numbers.