Floor screed

[Forest Grump]

Hi, I am going to have a go at my first floor screed next weekend after I have been and bought a mixer.
Is there a formula for working out materials?
I will order a jumbo bag of sharp sand but I need to know roughly how many bags of cement I will need.
Also will a retarder help or not?
The room size is 3.0m x 2.2m with a depth of about 75mm.
Thanks.

PS. Anyone used one of the belle mini mixers from screwfix?

 

[DAZB]

This will work out your quantities for you :

http://www.source4me.co.uk/calculate_floor_screed.htm

 

[Alastairreid]

PS. Anyone used one of the belle mini mixers from screwfix?

belle mini mixers are excellent value for money, you should get plenty of mileage from it.

 

[noseall]

My Belle mixer has mixed a trillion tonnes of gear and has not missed a beat.
Had a new drum and a couple of drive belts. Also, the gearbox casing was damaged when the mixer fell of the stand so it only holds about half the required amount of oil. this was 5 years ago!

you can not kill 'em.

 

[Forest Grump]

Thanks for the replies but after ringing around today I think I am gonna buy ready mixed.
I have another room of similar size to do so if I buy 1 meter it should be enough to do the lot, with no mixing involved.
£175 Delivered so it doesn't work out much more than the raw materials plus I don't have to buy the mixer.
1 meter don't sound a lot but I guess I'm gonna hurt on Sunday!