ᐅ Question about laminate flooring and underfloor heating

I am trying to reduce the costs of our new build as much as possible by doing some of the work myself. Originally, I planned to install the laminate flooring over the underfloor heating as a floating floor. However, a tradesperson warned me that without gluing, gaps might form between the planks. They also mentioned that there could be energy losses.

Now I have several questions: Why can gaps and heat loss occur with floating installation, and is it feasible for a non-professional to install the laminate with adhesive?

"Floating installation" means laying the flooring over a foam underlay. These foam underlays not only reduce impact sound but also provide thermal insulation. Overall, the laminate floor assembly (including vapor barrier, impact sound mat, and laminate) must not exceed a thermal resistance value of 0.15 m²·K/W.

The surface temperature of the laminate floor should not exceed 24°C (75°F), as higher temperatures can cause the material to dry out and shrink, leading to gaps. Carpets, runners, or similar coverings should also be avoided, as trapped heat can damage the laminate.

Most importantly, you need to ensure that the manufacturer approves the laminate flooring for use over underfloor heating (make sure to read the installation instructions carefully).

Heating costs will be higher compared to tile flooring. Additionally, warming up the rooms takes longer when comparing the thermal resistance of a glued ceramic tile of approximately 0.02 m²·K/W with that of a floating laminate floor, which averages around 0.14 m²·K/W.

This question also applies to me, and my husband wants underfloor heating while I prefer laminate flooring. What was written here earlier makes sense to me. Thank you very much for this information.

It is very important that this laminate is suitable for underfloor heating. Our flooring installer pointed this out to us. It is true that heating the rooms takes a bit longer during the cold winter, but otherwise, I am satisfied.

We have underfloor heating with laminate flooring installed on top. I am very happy with it, and I like how it provides comfortable warmth from below during the winter. Before installing the laminate, we consulted a flooring specialist who gave us several pieces of advice, including recommendations on which type of laminate to use.

Hi Sandraholster,

Thank you for your advice. I believe it’s definitely wise to consult a professional. There’s no harm in doing so. My husband tends to be a bit reluctant on this matter.

Best regards