Drying reference
Liquid Screed Drying Times — By Depth & Product
The 1mm-per-day rule is a rough guide, not physics. Here are realistic numbers.
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Drying time depends on depth, product, humidity and air movement. The '1mm per day' rule of thumb is right for the first 40mm — after that it slows.
These numbers are for natural drying at 20°C, 50% RH, with air movement. Force-drying cuts them by roughly a third.
Natural drying times (days to tile-ready)
| Depth | Cemfloor / Anhydrite |
|---|---|
| 30mm | 20–25 / 25–30 |
| 40mm | 30–40 / 35–45 |
| 50mm | 45–60 / 50–70 |
| 60mm | 60–75 / 70–85 |
| 75mm | 80–100 / 90–115 |
Force-drying rules
- Wait 24–48h before starting dehumidifiers
- Run 24/7 until moisture test passes
- Do not use radiant heat — use dehumidifiers only
- UFH commissioning schedule (0.5°C/day rise) can be combined with dehumidification
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Programme depends on the dry-down?
Tell us the pour date and depth. We'll advise on force-drying to hit your date.