Home · Articles

System 10: over 10 m²·K/W with 25 cm of Wolle between the rafters

Published on 17.06.2025 · Isoflect Insulation technical team

Isoflect rendering: System 10, over 10 m²·K/W with 25 cm of Wolle between rafters

The complete insulation ecosystem for high-performance, durable and safe buildings (System 10 Premium+)

  1. Completely eliminates thermal bridges
    Owing to the system of reflective membranes applied over the entire surface, System 10 creates a continuous, airtight barrier without interruptions – including at corners, joints, fixings and structures.

  2. Achieves record thermal performance with reduced thicknesses
    System 10 attains impressive R values, with thicknesses much smaller than traditional systems:

  • R = 6.21 m²·K/W with 10 cm of Wolle P2100 (System 10 Premium+)R (m²K/W), thermal resistance: how strongly the layer or assembly opposes the passage of heat; the higher it is, the better it insulates. What it means →

  • R = 7.53 m²·K/W with 15 cm of Wolle (System 10 Premium+)

  • R = 9.07 m²·K/W with 20 cm of Wolle (System 10 Premium+)

  • R = 10.38 m²·K/W with 25 cm of Wolle (System 10 Premium+)
    For the same values, a conventional insulation with λ 0.038 would require 24, 29, 34 and 39 cm respectively of material and would still not eliminate thermal bridges.

  1. Integrates a vapour barrier and a radiant barrier in a single system
    Unlike conventional foils, Isoflect membranes provide simultaneous control over vapour and over thermal radiation. The result: no condensation, no hidden losses, no degradation over time.

  2. Ensures constant thermal comfort in every season
    The reflective aluminium retains heat in winter and repels excess heat in summer. The building adapts naturally to the climate, with reduced energy consumption and constant indoor comfort.

  3. Total stability over time – no settlement, no deformation
    Isoflect Wolle insulation is rigid yet flexible, and completely dimensionally stable. It does not settle, does not develop mould and does not lose its properties – not even after decades.

  4. It is 100% safe for health and the environment
    It contains no formaldehyde, phenols, chemical additives or irritant fibres. It does not emit VOCs and does not affect indoor air. It can be used in schools, hospitals, dwellings or passive buildings without restrictions.

  5. Compliant with nZEB and passive house standards
    The performance achieved exceeds the minimum requirements for nearly zero-energy buildings. It is a solution prepared for the regulations of the future.

  6. Real savings on energy bills, month after month
    Owing to its extremely low U values (down to 0.110 W/m²·K), System 10 significantly reduces heating and cooling demand. It pays for itself entirely through efficiency.U (W/m²K): how much heat passes through one m² at a difference of 1 °C between inside and outside; the lower it is, the better (U = 1/R). What it means →

  7. Clean, rapid installation without material wastage
    The components arrive ready-prepared, in a coherent and logistically optimised system. Installation is intuitive and efficient, and can be carried out by any team with minimal experience in thermal insulation.

Technical consultancy, design, execution and tailored quotes:
isoflect.sk
0790 067 438
isoflect@isoflect.sk


Not sure which Isoflect product suits you? See the complete map — which Isoflect product is installed in each area of the house or open the package configurator to find out exactly what you need and in what quantity.

Further reading

Other articles

Share this page

Send it to someone who is insulating a house. You can also find us on WhatsApp and on social networks.