Can you tile directly onto screed?
Can you tile directly onto screed?
It’s quite common in modern construction and has many benefits over sand and cement screeds, but you can’t tile straight onto it with standard adhesives. If you do, there will be a chemical reaction between the screed and the adhesive, and the adhesive will eventually separate from the screed.
Do you need to screed a bathroom floor?
Not many people realise that before you tile a floor, it is important to lay a bed of screed to ensure your finished floor is levelled correctly. It is particularly important for bathrooms, as an incorrectly levelled floor will cause water runoff to pool on the floor rather than run into the installed drainage point.
How thick should a bathroom screed be?
A minimum thickness of 10mm is recommended when using diluted ARDEX Abacrete instead of water; 15mm when mixed with water. For a thickness greater than 40mm, reinforcing mesh is required.
What sand do you use for bathroom screed?
You should use Washed Sydney Sand, plasters and Brickies sand contain other components such as Clay. Don’t bother with the mortar mix is rubbish. Actually it is called washed plaster sand.
Do I need to seal a screed floor before tiling?
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.
Can you tile directly over concrete?
You can install the tile directly on the concrete. You can install a CBU or cement board on the concrete, then the tile on top of that. Finally, you can use an uncoupling membrane between the tile and the concrete.
Do you waterproof over or under screed?
Do we waterproof above or below the screed? AS 3740-2010 3.2 states: Where a tile bed or screed is used, the waterproof membrane shall be installed above or below the tile bed or screed. Both are correct, and have their various uses.
How thick should 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.