Concrete Floor Screed Depth

A floor screed is usually a cementitious material made from a 1 3 or 1 4 5 ratio of cement to sharp sand.

Concrete floor screed depth.

It may be applied onto either a solid in situ concrete ground floor slab or onto a precast concrete floor unit. Concrete flooring screed currently under development with longfloor binder to produce a concrete screed with a minimum thickness of 75mm and minimal shrinkage. This method requires a minimum of 75mm coverage otherwise cracking will occur. Screeds are covered by bs 8204 screeds bases and in situ floorings 2004.

Key steps to prevent floor screed issues. A screed is a layer of material laid in situ directly onto a base for one or more of the following purposes. Screed is not concrete while the chemistry between the two isn t too dissimilar the concrete creation process is almost identical there are a few key differences that. Liquid screed is designed to cover up to 1000 square meters in one day compared to 150m in a traditional screed floor.

If you are getting up to the 50mm you would question whether you want to use a smoothing product really just from an economic point of view because it is going to be very expensive. The screed is put on top of a separating membrane which will be applied on top of the layer of underfloor heating. Under this size we find it easier to just screed the floor by hand with the 2x4 screed. As this type of screed is pumped it is usually delivered in a mixing lorry and put down via a pumping pipe.

There are many proprietary screeds on the market and information about these can be obtained from the manufacturer. Although the vibra screed is quite easy to operate you need at least 1 preferably 2 good rakers behind you pulling and pushing the concrete in order to get a really flat floor. The maximum depth you would use a smoothing compound would generally be around out 10mm you can add aggregates to bulk up the screed going up to 30 40 50 mm.