
1. Natural ground
2. Compacted ground
4. Thermal insulation: THERMOTOP DV
3. Capillary break layer
5. Polyethylene foil
6. Reinforced concrete slab
Insulation under the concrete slab and foundation
Up to 15% of a building’s energy losses occur through the foundation and concrete slab. Increase the energy efficiency of your house and eliminate heat loss with THERMOTOP PIR boards.
THERMOTOP PIR boards stand out due to:
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Up to 15% of a building’s energy losses occur through the foundation and concrete slab.
Increase the energy efficiency of your house and eliminate heat loss with THERMOTOP PIR boards, a high-performance solution that combines superior thermal insulation with high compressive strength.
Thermal insulation applications under the concrete slab and foundation
Thermal insulation under the concrete slab
Construction elements in thermal insulation under the concrete slab
- Natural ground
- Compacted ground
- Capillary break layer
- Thermal insulation: THERMOTOP DV
- Polyethylene foil
- Reinforced concrete slab
Image gallery for insulation under the concrete slab

1. Natural ground
2. Compacted ground
4. Thermal insulation: THERMOTOP DV
3. Capillary break layer
5. Polyethylene foil
6. Reinforced concrete slab
Compatible THERMOTOP PIR boards
THERMOTOP PIR boards for pitched roofs
ADVANTAGES OF THERMOTOP PIR BOARDS

Optimization of overall construction costs
The reduced thickness of PIR boards and easy installation allow optimizing the size and quantity of auxiliary materials and shortening the installation time

Reduction of long-term operating costs
Due to the almost double thermal insulation capacity compared to mineral wool and XPS, the costs of heating and cooling the space can be reduced monthly by up to 30%

Maximization of usable space
Thermotop reduces the thickness of walls without compromising thermal insulation, while maximizing usable space

Quick installation and reduced material losses
Easy to handle and install: “L” type joint, on 4 sides

Durability for decades
THERMOTOP PIR boards retain their thermal and mechanical properties for decades

Compliance with nZEB standards
Simplifies achieving nZEB requirements, combining reduced thickness, performance and durability


















