How thick should your screed be?

How thick should your screed be?

The optimum thickness of a sand and cement bonded screed is 25–40mm, an unbonded screed should have a minimum thickness of 50mm, whilst a floating screed should have a thickness greater than 65mm for lightly loaded floors and 75mm for more heavily loaded floors.

How thick can you lay liquid screed?

Unbonded liquid screed thickness minimum would be 15mm for the specialist version and 30mm for standard. Unbonded liquid screed thickness maximum would be 80mm for the specialist version and 80mm for standard.

Can you polish anhydrite screed?

YOU CAN POLISH A FLOOR SCREED BY USING OUR PRODUCTS Flooring contractors are happy to work with us as laying a screed slab with a smooth surface is always easier than laying a concrete ready for polishing.

What is an anhydrite screed?

Anhydrite screeds are a mixture of screeding sand and binder. If tilers are unsure of whether the screed they’re to work on is, or isn’t, anhydrite, they should always ask. Information about the screed should be kept in the building owner’s Operation and Maintenance Manual.

What is the maximum screed depth?

Bonded Screed Maximum Depth 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.

Can you screed on top of insulation?

Yes laying the screed direct onto insulation is standard practise for a floating floor. A standard sand/cement screed would need to be laid at a minimum depth of 65mm for a domestic property. If modified screed is used you can get down to 55mm.

Can you concrete over screed?

Screed should be applied in a thin layer over the concrete base as a final coating. To get the right mix of screed for your requirements, contact a professional concrete supplier, like the team at King Concrete, and we’ll advise you as to the best product for your floor.

Can you seal screed?

If a screed is known to be anhydrite it must be thoroughly sealed before the application of a cement-based tile adhesive. If the screed type is not known and it is believed that it could be anhydrite, the screed should be thoroughly sealed as a precaution.

How big can an anhydrite Flow screed be?

With the anhydrite screed, for a screed with under-floor heat in it, you are looking at a 300 m2. And without under-floor heating, you are looking at 1,000 m2. You can see the difference. Bear in mind the aspect ratios, and if there are any restraints there, as they will reduce the bay size. How quickly can you traffic the anhydrite screed?

What should the thickness of liquid screed be?

An anhydrite flowing screed unbonded could be as little as 15mm with a maximum of 80mm, although that seems rather thick. The floor screed thickness when floating should be 75mm minimum with no maximum for traditional sand and cement, and 35mm minimum with no maximum for modified sand and cement.

How big of a bay do you need for anhydrite?

The bay size with traditional sand cement, should be no more than 40 m2, when you’re working with an of aspect ratio of a 2:1. With the anhydrite screed, for a screed with under-floor heat in it, you are looking at a 300 m2. And without under-floor heating, you are looking at 1,000 m2.

What’s the difference between anhydrite screed and cement?

It is a recycled product, it has eco-credibility, and has a far less carbon footprint than a traditional cement-based product. Any product with water will shrink. however with an anhydrite screed, the shrinkage is by far less than we would normally see in a cement-based product.