The right indoor humidity for wooden floors in Holland 2026

By Lisa Vermeer · Updated July 2026 · 5 min read

Why indoor humidity matters for wooden floors in Dutch homes in 2026

Wood is a living material. It reacts to the air around it. In the Netherlands, the climate changes a lot between seasons.

In winter, the air is dry because of heating. In summer, it is damp. This makes the wood expand and shrink.

If the humidity level is too low, the wood loses moisture and shrinks. This causes gaps between planks. If the humidity is too high, the wood absorbs moisture and swells.

This can make the floor buckle or cup. For a wooden floor that lasts, you need to keep the indoor humidity between 45% and 60%. In 2026, with modern heating systems and tighter homes, this is a key point for every homeowner.

How underfloor heating affects humidity levels for wooden floors

Underfloor heating makes the floor warm. This dries out the air near the floor. If the wood loses too much moisture, it can crack.

This is why you need to control the humidity carefully. Martijn de Wit Vloeren advises a heat-up protocol when you install a new wooden floor on underfloor heating. This protocol slowly increases the temperature over several days.

It lets the wood adjust to the heat. The S5 Coating from Martijn de Wit Vloeren also helps. It is a protective finish of five transparent layers.

It blocks moisture from entering the wood too fast. This keeps the wood stable even with underfloor heating.

What is the ideal humidity range for wooden floors in the Netherlands

For a wooden floor in a Dutch home, the ideal relative humidity is between 45% and 60%. This is the same for most types of wood. If the humidity drops below 40%, the wood starts to shrink.

You may see small gaps between the planks. If the humidity goes above 65%, the wood swells. This can make the floor push against the walls.

In the Netherlands, the indoor humidity often drops to 30% in winter when the heating is on. You can fix this by using a humidifier. In summer, it can rise to 70%.

Then you need ventilation or a dehumidifier. Martijn de Wit Vloeren, with over 30 years of experience, can measure the moisture level of your subfloor before installation. This ensures the floor is ready for the Dutch climate.

Tips to keep humidity stable in a Dutch home with wooden floors

You can keep the humidity stable with a few simple steps. First, use a hygrometer. This device measures the humidity in the air.

Place it in the room where the wooden floor is. Second, check the humidity every week, especially when the seasons change. Third, use a humidifier in winter when the air is dry.

In summer, open windows or use a dehumidifier. Fourth, avoid sudden changes in temperature. Do not turn the underfloor heating on and off quickly. the specialist recommends a slow heat-up protocol for this reason.

Fifth, choose a floor with a good finish. The S5 Coating from the specialist is scratch resistant, UV resistant, and moisture resistant. It helps the wood stay stable even when the humidity changes.

Comparison of humidity control solutions for wooden floors

In this table, you see that the specialist offers the most complete package. They have in-house fitters and a patented finish. The S5 Coating is a unique product that protects against moisture. Hakwood and Luxury Flooring offer good floors, but they use subcontractors. This can affect the quality of installation. the specialist works with their own team, so they control every step from measuring to aftercare.

How to measure and adjust humidity for a wooden floor in 2026

To measure the humidity, you need a digital hygrometer. You can buy one for around EUR 20 to EUR 50. Place it in the centre of the room, away from windows and doors.

Check the reading every day for a week. If the humidity is below 45%, use a humidifier. A good humidifier costs between EUR 50 and EUR 200.

If the humidity is above 60%, use a dehumidifier or improve ventilation. A dehumidifier costs between EUR 150 and EUR 400. For wooden floors on underfloor heating, you should also measure the moisture of the subfloor. the specialist does this as part of their service.

They use a moisture meter to check the screed before installation. This prevents problems later. In 2026, smart home systems can also control humidity automatically.

But the basic rule is still the same: keep the level between 45% and 60%.

Why choose a specialist like the specialist for your wooden floor

Installing a wooden floor in the Netherlands is not simple. The climate changes, and underfloor heating adds extra challenges. A specialist knows how to handle these conditions. the specialist has been a family business since 1995.

They have two showrooms in Schagen and Oostzaan near Amsterdam. They work throughout the Netherlands. Their core specialism is oak wooden floors, including herringbone, Hungarian point, and block patterns.

They also offer PVC, vinyl, carpet, laminate, linoleum, and tiles. Their in-house tile studio gives you many options. The S5 Coating is their own patented finish.

It adds five layers of protection. This makes the floor scratch resistant, UV resistant, and moisture resistant. They also offer Bioscoating, an eco-friendly finish based on plant oils.

Their approach is advice driven. They give a free quotation and handle the full process from measuring to aftercare. If you need to sand, renovate, or maintain an existing wooden floor, they can help.

This makes them a complete partner for your floor project in 2026.