Moisture control is one of the most critical factors in the successful installation and long-term performance of any wood flooring system. In Somerset, where humidity levels and building types can vary widely, excess moisture in the subfloor or surrounding environment can lead to serious issues such as warping, cupping, crowning, gapping, adhesive failure, and structural movement.
Before any wood flooring work begins, we carrs out a full inspection of the room and subfloor to identify potential moisture problems. During our site survey, we use industry-standard moisture testing equipment, to accurately measure moisture levels.
With our expertise in assessing concrete screeds, calcium sulphate (anhydrite) screeds, timber subfloors, and structural decks, we determine the most appropriate course of action to ensure the substrate is within the required tolerances. This may include drying time allowances, moisture mitigation systems, surface preparation, primers, damp-proof membranes (DPMs), or levelling compounds.
This rigorous process helps prevent future problems and ensures your wood floor is installed to the highest professional standards, delivering long-term stability, durability, and aesthetic performance.
Moisture Tolerance Requirements for Wood Flooring
Before wood flooring installation can proceed, the following conditions must be met:
- Concrete / cement screeds:
Maximum moisture content of 3% (or 75% RH using in-situ probes, where applicable) - Calcium sulphate / anhydrite screeds:
Maximum moisture content of 0.5% - Timber subfloors:
Moisture content should be between 8–12%, with no more than a 2% variance across the floor area - Room temperature:
Minimum 18°C - Relative humidity (RH):
Between 40–60%
Only once these conditions are satisfied should wood flooring installation commence.
Why Moisture Control Matters
Failure to properly manage moisture can result in:
- Distortion, swelling, or shrinkage of boards
- Adhesive breakdown or bond failure
- Gapping between boards
- Buckling or lifting of the floor
- Surface cracking or delamination
- Reduced lifespan of the flooring system
- Voided manufacturer warranties
Correct moisture control protects your investment and ensures compliance with manufacturer installation guidelines and British Standards.
Subfloor Preparation & Moisture Mitigation in Somerset
If moisture levels exceed acceptable limits, TFS can specify and install appropriate remedial solutions, including:
- Surface-applied damp-proof membranes (DPMs)
- Moisture-tolerant primers
- Rapid-drying or moisture-resistant levelling compounds
- Controlled drying periods
- Ventilation improvements
- Environmental conditioning (temperature and humidity control)
Each solution is tailored to the specific subfloor type, site conditions, and flooring product being installed.
Benefits of Professional Installation
Our specialists work closely with homeowners, builders, architects, and commercial clients to ensure the correct preparation methods are applied before installation begins. By combining accurate moisture testing, proven preparation systems, and expert installation techniques, we help ensure your wood floor performs beautifully for years to come.
Why choose TFS for your wood flooring installation?
- Local specialists in wood flooring installation
- Accurate subfloor moisture testing and surveys
- Expert advice on moisture control and mitigation
- Full compliance with manufacturer and British Standards
- Trusted by homeowners and contractors across Somerset
We’re based in Taunton and work across the Southwest, helping homeowners choose flooring that works long-term, not just something that looks good on day one.
Get in touch to request your free quote.