How much square meterage of render does a bulk bag of sand cover? Thats for the sratch coat and finish.

25 kg of sand mixed at 4:1:1/2 sand cement lime will cover new work @ 10 mm thick so 1 tonne will cover up to 40 m2

varies depending on eveness of wall at the start in order to get an even finish 30m2 is a good guide for most jobs

A mix of 4:1 should cover on average 35m2 which is about the size of a garage I rendered last year.

this job depend of the how thick is the render bur normaly one m2 of sand , (850kg) is about 35m2 if is normla render , have a nice day ,m

33m2 per bag

It all depends on the brick work for your scatch coat any bad brick work should be filled in or replaced and give it a good brush and wet it down with water before you aply upva a ton bag should cover 35s2 meters for the scratch coat and 42 for the top coat and a good spred will not have any wastage as it all go`s on the wall

This all depends on thickness and what you are rendering on such as stone, block or brick, plus how much wastage you have, I work on 30 square metres per bulk bag. Hope this is of some help. Colin.

I would, allowing for wastage and variancies in thickness, 30m2

As above 35m2 -40m2 as a guide