Drying methods compared
Force Drying vs Natural Drying a Liquid Screed
Pressure on programme often pushes clients toward force drying — but it isn't free, and it isn't always faster in a way that matters.
Ask us whether your programme needs force drying
Name, phone, email — we'll reply the same working day with a fixed price.
Every screed has to reach a target relative humidity before floor coverings go down, and how you get there — patiently, or with mechanical help — has real cost and risk implications that don't always get discussed at quote stage.
Natural drying relies on ambient temperature, airflow and time. Force drying brings in dehumidifiers, heaters or trace heating on the UFH circuit to accelerate moisture loss. Both work; they're just suited to different pressures on a build.
This page lays out what each approach actually involves and when the cost of force drying is worth paying.
Force drying vs natural drying
Force drying
- Can shave 1–3 weeks off programme
- Requires dehumidifier hire and running costs
- Needs careful, gradual heat ramp-up to avoid surface cracking
- Best on Cemfloor and other cement screeds tolerant of controlled heat
Natural drying
- No additional equipment cost
- Relies on ventilated, heated ambient conditions
- Lower risk of thermal shock cracking
- Standard approach when programme allows it
How a force-dry sequence typically runs
- 1
Wait for initial cure
Screed reaches walk-on strength (24–48h) before any forced heat or airflow begins.
- 2
Introduce gentle heat
UFH trace-heat or space heaters brought up gradually — no rapid temperature spikes.
- 3
Dehumidify and ventilate
Dehumidifiers run continuously, windows/doors managed to control airflow without draughts.
- 4
Test RH regularly
Hygrometer readings taken at multiple points and depths until consistently under 75% RH.
Ask us whether your programme needs force drying
Tell us your handover date and screed depth and we'll advise honestly on whether force drying is worth the cost.
Typical timescales compared
| Scenario | Force-dried vs natural |
|---|---|
| 50mm Cemfloor pour | ~3–4 weeks vs ~5–7 weeks |
| 50mm anhydrite pour | ~4–5 weeks vs ~6–8 weeks |
| Running cost | Dehumidifier hire + power vs none |
| Cracking risk | Slightly higher if rushed vs low |
Force drying earns its cost when the programme genuinely can't absorb natural drying time — a fit-out deadline, a handover date, a knock-on trade that's booked. If time isn't the binding constraint, natural drying is the lower-risk, lower-cost route. Test it against your actual handover date, not a general sense of urgency.
— Exeter Liquid Screeders
Force Drying vs Natural Drying — questions we get asked
Keep reading across the site
Ask us whether your programme needs force drying
Tell us your handover date and screed depth and we'll advise honestly on whether force drying is worth the cost.