How do you test the strength of the screed?

The test method consists of subjecting the surface of the screed to four consecutive blows from a 4kg (or 2kg) weight dropped vertically through a height of 1m onto a foot 500mm² in area and then measuring the depth of indentation.

What is the difference between screed and topping?

Bonded screeds or toppings are applied to a surface at a later stage of the construction process, while unbonded screeds or toppings are used where they are not required or able to be bonded directly to the concrete floor.

Is 50mm screed OK?

The minimum screed thickness you should use for warm water underfloor heating systems is: Minimum depth of 65mm for hand-mixed screed. Minimum depth of 50mm for liquid screed.

What consistency should screed?

Conventional sand/cement screed uses a relatively strong mix (1:3 cement to sharp sand) with a fairly dry, almost powdery consistency.

What is the ratio for floor screed?

Screed is typically made from sharp sand, cement and water – in a ratio of around 1:3 or 1:4 of cement / sharp sand. There are a number of additives that can also be used to improve certain characteristics, for example, a faster drying time, improved thermal conductivity for underfloor heating, or increased strength.

How do I calculate the amount of concrete or screed I Need?

Our Concrete and Screed Calculator will help you to determine the amount of product you require for your project. Please enter the Width, Length and Depth of the area then click on the Calculate button. The calculator will estimate the number of cubic metres of concrete or screed required.

How to know how much screed you need?

Screed Volume Calculator – Need To Know How Much Screed You Need? This screed volume calculator will work out the approximate quantity of screed that you would need to order based on the measurements that you supply. We would always recommend a little extra to allow for waste and small changes in depth.

Why use a concrete calculator?

Using a concrete calculator is one of the most efficient methods of ordering concrete. Not only is it cost-effective, but an experienced and qualified technician will also ensure that the concrete fits your exact requirements, however simple or complex.

Do I need extra space for a screed?

We would always recommend a little extra to allow for waste and small changes in depth. Input your projects dimensions into the screed volume calculator below, and you have your screed volumes.