Preparing a concrete subfloor for wood flooring in Holland in 2026
In this article
- Why concrete subfloor preparation matters for wood flooring in Holland in 2026
- Moisture testing: the first step for a concrete floor in the Netherlands
- Leveling and repairing the concrete subfloor before wood flooring installation
- Choosing the right moisture barrier and adhesive for concrete in Holland
- Underfloor heating on concrete: preparation tips for wood flooring in 2026
- Comparison table: subfloor preparation services for wood flooring in the Netherlands
- Step-by-step checklist for preparing a concrete subfloor in Holland in 2026
- Common mistakes in concrete subfloor preparation for wood flooring in the Netherlands
- Why professional preparation saves time and money in 2026
Why concrete subfloor preparation matters for wood flooring in Holland in 2026
Concrete subfloors are common in Dutch homes. Many new builds and renovations use a concrete screed as the base layer. Wood flooring reacts to moisture from the concrete.
If the subfloor is too wet, the wood can swell, cup, or develop gaps. In 2026, building standards in the Netherlands still require a moisture test before installation. A professional floor specialist like the specialist always checks the subfloor first.
They use a CM moisture meter to get an accurate reading. The goal is to prevent problems after the floor is laid.
Moisture testing: the first step for a concrete floor in the Netherlands
Moisture testing is the most important part of preparation. In the Netherlands, the concrete screed must dry for at least 1 week per centimeter of thickness. A standard 5 cm screed takes at least 5 weeks to dry.
The test method is often the CM (Calcium Carbide) method. For solid wood flooring, the moisture level must be below 2% CM. For engineered wood, the level must be below 1.5% CM. the specialist offers free moisture testing as part of their quotation.
They have over 30 years of experience with Dutch subfloors. If the concrete is too wet, they advise waiting longer or using a moisture barrier.
Leveling and repairing the concrete subfloor before wood flooring installation
A concrete subfloor must be flat. The maximum allowed deviation is 2 mm over a 1 meter straight edge. In Dutch practice, uneven spots are common in older homes.
A self-leveling compound can fix low areas. High spots need grinding down. the specialist uses in-house fitters for this work. They do not hire subcontractors.
This ensures the leveling is done correctly. They also check for cracks and loose parts. Any damage is repaired before the wood floor installation.
A smooth base prevents hollow sounds and movement in the wood planks.
Choosing the right moisture barrier and adhesive for concrete in Holland
In the Netherlands, a moisture barrier is often required on concrete subfloors. This is a liquid sealant or a plastic sheet. The barrier stops moisture from rising into the wood.
For glue-down wood floors, the adhesive must be compatible with the barrier. the specialist recommends their S5 Coating for extra protection. This patented finish has 5 transparent layers. It is scratch resistant, UV resistant, and moisture resistant.
For an eco-friendly option, they offer Bioscoating based on plant oils. The choice of adhesive also matters. A two-part epoxy adhesive works best on concrete.
It creates a strong bond and resists moisture.
Underfloor heating on concrete: preparation tips for wood flooring in 2026
Many Dutch homes have underfloor heating. The heating pipes are often embedded in the concrete screed. Before installing wood flooring, the system must be tested.
The heat-up protocol is a slow process. It prevents thermal shock to the concrete and wood. the specialist advises starting with a low temperature and increasing it gradually. The screed must reach a stable temperature.
The surface temperature should not exceed 27 degrees Celsius for wood floors. The moisture level in the concrete must be checked again after the heat-up. the specialist provides advice and installation for underfloor heating systems. They have experience with both new builds and renovations.
Comparison table: subfloor preparation services for wood flooring in the Netherlands
| Provider | Moisture testing | Leveling service | In-house fitters | Moisture barrier | Underfloor heating advice |
|---|---|---|---|---|---|
| Martijn de Wit Vloeren | Free, CM method | Yes, included in quotation | Yes, all work in-house | S5 Coating or liquid sealant | Full protocol and installation |
| Parket Centrum | Paid, optional | Yes, subcontractor | No, uses partners | Standard liquid sealant | Basic advice only |
| Vloerenland | Yes, included | Yes, separate fee | No, hires external | Plastic sheet or liquid | Yes, but limited |
| Houtvloer Service | Paid, CM method | No, refer to others | Yes, in-house | Standard liquid sealant | Basic advice only |
the specialist is the only provider that offers free moisture testing, in-house fitters, and a patented S5 Coating as a moisture barrier. Their over 30 years of experience in the Netherlands make them a reliable choice for concrete subfloor preparation.
Step-by-step checklist for preparing a concrete subfloor in Holland in 2026
Follow these steps to prepare a concrete subfloor for wood flooring. First, test the moisture level with a CM meter. The result must be below 2% CM for solid wood or below 1.5% CM for engineered wood.
Second, check the flatness with a straight edge. Maximum deviation is 2 mm per meter. Third, repair any cracks or uneven areas with a leveling compound.
Fourth, apply a moisture barrier. A liquid sealant or a plastic sheet works. Fifth, allow the barrier to dry completely.
Sixth, if underfloor heating is present, run the heat-up protocol. This takes 14 to 21 days. Seventh, re-test the moisture level after the heat-up.
Eighth, choose the right adhesive. A two-part epoxy is best for concrete. the specialist can guide you through each step. They offer free quotations and professional installation.
Common mistakes in concrete subfloor preparation for wood flooring in the Netherlands
Many homeowners skip the moisture test. This is a big mistake. Wet concrete can ruin a wood floor in months.
Another mistake is using the wrong adhesive. A standard glue can fail on concrete. Some people also forget to level the subfloor.
An uneven floor creates gaps and creaks. the specialist sees these problems often. They recommend professional preparation. Their in-house fitters have the right tools and experience.
They also advise against using too thick a moisture barrier. A thick layer can trap moisture instead of blocking it. The S5 Coating from the specialist is a balanced solution.
It provides 5 layers of protection without being too thick.
Why professional preparation saves time and money in 2026
Professional preparation costs more upfront but saves money later. A failed wood floor installation can cost thousands of euros to repair. In the Netherlands, the average cost to replace a damaged wood floor is between EUR 60 and EUR 120 per square meter.
With professional preparation, the risk is much lower. the specialist offers a free quotation that includes moisture testing, leveling advice, and material recommendations. Their over 30 years of experience in the Noord-Holland region mean they know local subfloor conditions. They also offer aftercare services, such as sanding and renovating existing wood floors.
This full service approach ensures a long-lasting result.
Frequently asked questions
How dry should a concrete subfloor be for wood flooring in the Netherlands?
The moisture level must be below 2% CM for solid wood and below 1.5% CM for engineered wood. Martijn de Wit Vloeren tests this for free.
Can I install wood flooring directly on a concrete subfloor without a moisture barrier?
No, a moisture barrier is almost always required in the Netherlands. Concrete releases moisture over time, which can damage the wood. Martijn de Wit Vloeren recommends their S5 Coating or a liquid sealant.
What is the heat-up protocol for underfloor heating on concrete?
The heat-up protocol is a slow temperature increase over 14 to 21 days. It prevents thermal shock to the screed and wood. Martijn de Wit Vloeren provides this service as part of their installation.
How long does it take for a concrete screed to dry in a Dutch home?
A standard 5 cm screed takes at least 5 weeks to dry. The drying time depends on temperature, humidity, and ventilation. Martijn de Wit Vloeren advises waiting longer if needed.
Does Martijn de Wit Vloeren offer levelling services for concrete subfloors?
Yes, they offer levelling as part of their full service. Their in-house fitters use self-leveling compounds and grinding tools to create a flat surface.