Insulation for ventilation – commercial and industrial
- Very low thermal conductivity and thus high insulation capacity per mm
- High compressive strength and dimensional stability, even with large temperature fluctuations
- Low weight and easy installation
- Closed-cell structure that provides an effective moisture and vapor barrier
- Long service life without deformation or settling
Effective insulation of ventilation ducts is crucial for both energy consumption, operational reliability and a stable indoor climate in commercial and industrial buildings.
At Dan-iso, we develop and produce technical insulation solutions in PUR (polyurethane), designed to deliver maximum insulation performance in ventilation systems where temperature control, durability and documented performance are essential requirements.
Our solutions are used in everything from production environments and process plants to office buildings, technical rooms and ventilation centers, where stable operating conditions and low energy consumption are a necessity.
We also offer our environmentally friendly variant, Dan-isoRECY, which is made from recycled polyurethane, providing the same technical properties as standard PUR/PIR, but with a reduced CO₂ footprint.

Why is insulation of ventilation ducts important?
Ventilation ducts transport large volumes of air through the building, and without proper insulation, both energy loss and heat loss can be significant. In industrial installations, uninsulated or poorly insulated ducts can lead to condensation, heat loss, noise nuisance and increased load on the ventilation and heat recovery system.
Effective insulation of the ventilation system reduces energy consumption, ensures stable air temperatures and improves the overall efficiency of the system. At the same time, the risk of moisture problems and corrosion is reduced, which extends the lifespan of both ducts and associated installations.
For many companies, correct ventilation insulation is therefore a solution that both improves operations and reduces ongoing expenses.
PUR insulation for ventilation ducts in industry and commerce
PUR (polyurethane) is one of the most effective insulation materials for ventilation ducts because it combines very low thermal conductivity with high mechanical strength and low weight. This makes the material particularly suitable for both round and square ducts as well as technical installations where precise tolerances and long durability are required.
Dan-iso's PUR shells for ventilation are supplied with aluminium foil without text or logo, ensuring a uniform and professional look to the installation. The construction also provides an effective vapour barrier and a robust surface that withstands handling, cleaning and physical impact.
Our PUR shells are used for, among other things:
- new ventilation installations in industrial halls and production buildings
- renovation and energy optimization of existing ventilation systems
- aggregates, risers and technical modules
- process ventilation and special industrial environments
PUR provides high insulation performance at minimal thickness, making it ideal for installations with limited space or high ventilation requirements.


Effective post-insulation of ventilation systems
Retrofitting existing ventilation ducts is an effective way to improve the performance of the system without replacing the duct system itself. PUR shells can be installed directly around existing pipes and ducts, creating a tight, uniform insulation jacket that significantly reduces energy loss.
Post-insulation is typically used in:
- production environments where stable process air is important
- technical rooms, ventilation attics and power plants
- office and commercial buildings with high ventilation requirements
- logistics centers, warehouses and stairwells
The solution is quick to establish and provides both improved energy efficiency and a longer lifespan for the system.
PUR and PIR – high insulation performance in minimal space
PUR and PIR insulation are known for their very low thermal conductivity (λ value) compared to mineral wool and other conventional materials.
Comparison (typical values):
- PUR/PIR: approx. 0.022–0.026 W/mK
- Mineral wool: approx. 0.034–0.037 W/mK
This means that the same insulation performance can be achieved with significantly less thickness. For commercial buildings and technical installations, this is often crucial – especially where:
- Space is limited.
- There are requirements for low density
- Existing ventilation ducts are renovated

Typical areas of application
Dan-iso's insulation solutions for ventilation are used in:
- industrial halls and production facilities
- warehouse and logistics centers
- ventilation and energy plants
- technical rooms, process plants and machine installations
- prefabricated ventilation modules
We ensure that the solutions match the installation's load, condensation requirements, energy limits and applicable standards.

Let us assist you
Do you have questions or need help? Please do not hesitate to contact us - we look forward to hearing from you.



