Laitance Removal / Screed Sanding

Laitance Removal / Screed Sanding

Before laying tiles or other floor finishes onto calcium sulphate screeds, one of the most important tasks is the removal of the laitance (a thin crust that forms to help with curing.) Laitance should be removed by light abraision using a suitable sanding machine. The best time to do this is 7-14 days after the installation of the screed. It will also help to dry the screed as it allows the moisture to escape.

Before laying tiles or other finishes on to a calcium sulphate screed one of the most important tasks is the removal of latence.

Latence is a weak layer of fine particles deposited on the surface of the screed. As the anhydrite cures, this layer is too weak to tile onto and can also slow down drying times.

Latence should be removed by light abrasion using a suitable sanding machine.

The best time to do this is 7 to 14 days after the installation of the screed. This will aid the drying out process.

Please contact us for a Laitance Removal / Screed Sanding quote.