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The insulation of the roof is an absolute priority for those who want to save energy. The roof is the principal source of energy loss in a home.

As the thin roof insulation Aluthermo Densima® also works as a roof membrane and vapor barrier, its installation from the exterior, over the rafters, is very easy, requiring only one single operation.

In a renovation situation, simply roll out over the rafters, the issue of air gaps, height or shape of rafters is no longer an issue.

The thin reflective insulation Aluthermo Densima® is very flexible, adapts to all roof shapes, and avoids increase of thickness to the structure. The strong reflective property of Aluthermo Densima® reflects more than 82% of the solar radiation and improves the ambient temperature by reducing overheating in summer.

Our product recommendation:

There isn’t any insulation material between the rafters; I’ll opt for DENSIMA. Made thicker, perfect to reinforce the acoustic performance.

DensimaDENSIMA – 37mm
Insulation, vapour barrier and roof membrane combined in one product. Made thicker to comply with European standards, it is the perfect insulation for your roof renovation.


  • Breather membrane, insulation and vapour barrier all in one
  • EPC & 2020 certified
  • Multi-reflective and multi-layer with a reinforced thermal and acoustic performance
  • Reduces thermal bridges
  • Easy to install as it is welded across nits entire surface
  • Self-adhesive overlap included