Aerogel Floor Build-up – maximum insulation performance with minimal height

An Aerogel floor build-up offers one of the most efficient ways to achieve excellent insulation performance with minimal build-up height. Especially for renovations, old buildings, and refurbishments with limited space, an Aerogel floor build-up is ideally suited, as Aerogel enables outstanding thermal insulation despite extremely low material thickness. In combination with modern dry-system underfloor heating, an energy-efficient, durable, and stable floor build-up is created.

What is Aerogel Insulation and why is it ideal for flooring?

Aerogel is one of the world’s most advanced and high-performance insulation materials. Due to its extremely low thermal conductivity (λ ≈ 0.014–0.018 W/mK), it is perfectly suited for low-profile floor build-ups. The insulation mats are flexible, highly effective, and moisture-repellent – ideal for renovations, old buildings, and energy modernizations.

• extremely high insulation performance
• ideal for low build-up heights
• hydrophobic (does not absorb moisture)
• easy to process
• optimal complement to dry-system underfloor heating systems

Aerogel insulation is not pressure-resistant – why this is important

For use under underfloor heating, it is crucial that Aerogel is not pressure-resistant. It exclusively performs the insulation function. To ensure the floor remains stable long-term, a pressure-stable, load-distributing layer must always be installed above the Aerogel.

Suitable layers include:

• Dry screed panels (e.g., Fermacell)
• OSB panels
• system-specific dry-system panels for underfloor heating

This is the only way to ensure the load is evenly distributed and the floor remains permanently load-bearing.

Layer Structure in Detail: This is what a modern Aerogel floor build-up looks like

Double Aerogel Insulation – more insulation performance in less space

A double-layer Aerogel insulation significantly increases the insulation effect without massively changing the floor height. The pressure resistance remains unchanged, therefore, the load-distributing layer remains absolutely essential.

If very high insulation values are to be achieved, the use of two layers of Aerogel is often an ideal solution – especially for energy-efficient renovations and projects with strict requirements. More information about Aerogel

Is Aerogel insulation compatible with dry-system underfloor heating systems?

In most cases, the Aerogel floor build-up can be combined with common dry-system underfloor heating systems. It is important that the system panels:

• are pressure-stable and self-supporting
• distribute the load evenly
• completely cover the Aerogel insulation

We would be happy to check whether the system you have planned or already have can be optimally combined with Aerogel.

Your advantages with Aerogel in floor build-up

• ✔ compatible with modern dry systems
• ✔ durable, hydrophobic, and energy-efficient
• ✔ ideal for heating systems with low flow temperature

Conclusion: Aerogel insulation is the best solution for thin floor build-ups

Aerogel floor build-up offers a unique combination of extreme insulation performance, low thickness, and high compatibility with modern underfloor heating systems. For refurbishments, modernizations, and projects with limited height, Aerogel is the ideal solution – efficient, safe, and future-proof.

We would be happy to advise you personally and create the suitable floor build-up for your project.

FAQ – Frequently Asked Questions about Aerogel Floor Build-up

Can I lay Aerogel directly under the flooring?

No. Aerogel must never be directly loaded. It exclusively performs the insulation function and must always be protected by a pressure-stable, load-distributing layer (e.g., dry screed or OSB). Only above that follow the dry system, underfloor heating, and flooring.

Is Aerogel insulation suitable for renovations with low build-up height?

Yes, Aerogel is ideal for exactly that. Due to its extremely low thermal conductivity, you achieve very high insulation performance with minimal thickness. Especially for existing building renovations where doors, stairs, or room heights are limited, Aerogel insulation in the floor build-up is a perfect solution.

Can I install double-layer Aerogel insulation under underfloor heating?

Yes, a double layer is possible and significantly increases the insulation effect. However, it is important: The pressure resistance does not increase as a result. The load-distributing layer remains absolutely essential for the floor build-up to remain permanently stable.

Does Aerogel insulation work with every dry system for underfloor heating?

Generally, Aerogel can be combined with most dry systems, provided the system panels are pressure-stable and distribute the load evenly. We recommend briefly checking compatibility – we would be happy to assist you and evaluate your specific floor build-up.

Is Aerogel insulation sensitive to moisture?

No. Aerogel is hydrophobic and does not absorb moisture. Nevertheless, the insulation must be professionally installed and protected against mechanical stress. In typical floor build-ups, Aerogel is completely enclosed by other layers.

Can I save energy and heating costs with Aerogel insulation?

Yes. Due to its high insulation performance, Aerogel insulation in the floor build-up significantly reduces heat loss. In combination with a dry-system underfloor heating, the flow temperature can often be lowered, which long-term leads to lower heating costs and higher efficiency.

For which projects is Aerogel insulation particularly suitable?

Aerogel is particularly suitable for renovations, old buildings, and projects with low build-up height, for example, in the modernization of apartments, single-family homes, attics, or commercially used areas where every millimeter of floor height counts.