Liquid Screed Drying Time

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Liquid Screed Drying Time

Buxton Flow Screeds provide this guide as best practice to ensure your liquid screed sets to the highest standard.

Keep the windows and doors shut!

While the screed drys, all windows and doors should be kept shut so the drying screed is not contaminated. Walking on it should be avoided as much as possible too.

Open the doors and windows!

Once the screed is solid, open your doors and windows to aid evaporation and complete the drying stage. After drying the screed, the residual moisture content must be determined using one of the approved test methods:

Hair hygrometer, carbide bomb or oven dry tests to demonstrate suitability for acceptance of floor finishes.

NB: Drying of screeds can be greatly influenced by individual.

More info can be found below.

You can also download our Aftercare document here.

 

Approximate Screed Drying Times

A well ventilated room is needed for ideal drying conditions. The drying rate of liquid screed is 1mm/day up to a thickness of 40mm, following a rate of 0.5mm/day for thicknesses above this.

For example:
50mm Agilia Screed A drying time: (40mm x 1mm per day) + (10mm x 0.5mm per day) = 60 Days (2 months)

NB: Drying of screeds can be greatly influenced by individual site conditions. (Guidance only).

Force Drying

Force drying of liquid screed can begin seven days following installation of the screed by many different methods.

Commissioning: (heating and cooling procedure) of underfloor heating systems. Set flow temperature to 20-25°C, maintain for a minimum of three days and then slowly increase the temperature in 5°C increments to maximum operating temperature. This should be maintained for a further 14 days (water temperature should not exceed 55°C for screeds), prior to returning to ambient temperature again in 5* C increments. Then the system should be turned off for 48 hours prior to moisture testing of the screed

Space heaters and dehumidifiers in combination. Fossil fuel fired heaters (e.g. gas heaters) must be avoided as they will raise humidity.

Assisted Drying Time

DEHUMIDIFIERS 

Dehumidifiers can be used  72 hours after the placing of liquid screed to assist with drying. It is crucial that a closed system is employed to make sure that any moisture extracted from the environment during operation is removed. 

We suggest the use of industrial closed-circuit systems.

T: 07590 625100
E: info@buxtonflowscreeds.co.uk

Buxton Flow Screeds
The Colchester Centre Hawkins Rd
Colchester
CO2 8JX

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