Floor insulation

Floor insulation is an effective way to improve living comfort and achieve long-term savings on energy costs. This method involves installing insulation material directly beneath the floor, often via the crawl space. As a result, heat is retained more effectively and cold rising from the ground is blocked.

Depending on the type of floor—such as concrete or wooden—a suitable method is chosen. This can include insulation under the floor, between the joists, or using thermal cushions. Floor insulation not only keeps your feet warm but also contributes to a healthier indoor climate by reducing moisture issues in the crawl space.

The average cost of floor insulation ranges between €40 and €60 per square metre. With the ISDE subsidy, you can recover up to 30% of the investment.

Please note: a crawl space of at least 50 cm is required for floor insulation. If your crawl space is lower or difficult to access, we recommend ground insulation instead.

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A conversation is always completely non-binding.

We always apply a minimum price of €950.

To install floor insulation, your crawl space should be at least 50 cm high. This provides enough room to apply insulation material to the underside of the floor. If your crawl space is lower, ground insulation—such as insulation chips or EPS beads—can be a suitable alternative.

The cost of floor insulation typically ranges between €20 and €40 per m², depending on the insulation material and the accessibility of the crawl space. With available subsidies, you can recover up to 30% of the investment, significantly reducing the payback period.

For a more accurate estimate, it’s best to request a no-obligation quote or visit our detailed floor insulation cost page for a full breakdown and precise calculation.

The choice of insulation material depends on the type of floor, the height of the crawl space, and your preferences. Options include PIF insulation foil for high insulation performance, PUR foam for a seamless finish, or insulation boards for both wooden and concrete floors.

Each type has its own insulation value, moisture resistance, and cost per square metre. At De Vries Insulation, we work with materials such as PIF insulation foil and Knauf Naturoll glass wool.

Yes, floor insulation is suitable for wooden floors, provided the structure is in good condition. By insulating the underside of the floor, you prevent cold air and moisture from rising from the crawl space. This also helps extend the lifespan of the floor.

Yes, floor insulation helps stop damp air from the crawl space entering your home. This prevents issues such as mould, musty odours, and wood rot, while contributing to a healthier indoor climate.

Absolutely—in fact, it’s recommended. By adding an insulation layer beneath the floor, heat is retained more effectively inside your home. This makes your underfloor heating system more efficient and helps reduce energy costs.

An insulation specialist enters the crawl space through the access hatch and installs the insulation material on the underside of the floor. This can be done using boards, foil, or foam, depending on your situation.

“We chose PIF for floor insulation along with ground foil. Two friendly, hardworking team members arrived on time and completed the work neatly and efficiently. Everything looks great, and no mess was left behind. Very satisfied!”

“Great company—arrived even earlier than scheduled. Lucas and Peter are hardworking and friendly. The floor insulation was done thoroughly, and everything was left neat and tidy afterwards. Nothing but compliments—top service!”

“We had a very pleasant experience with De Vries Insulation Technology. Nico, Lauren, and Jos worked incredibly hard to insulate both our floor and cavity wall in just one day. They handled any challenges they encountered—such as a tight crawl space—in good consultation and worked with great attention to detail (for example, matching the mortar color perfectly so the drill holes are invisible). Everything was neatly finished and cleaned up afterwards.

An absolute recommendation, as far as we’re concerned, if we ever need more insulation work done, this is the team we’d choose again without hesitation.”

“Excellent service! Very friendly team and everything delivered as agreed. They work neatly and treat your home as if it were their own. Very satisfied with the end result. Thank you, De Vries Insulation Technology team!”