HP4® transforms interior walls from a passive element into an active thermal surface. It doesn't work with mass — it intervenes where it has the greatest impact: directly on the surface.

By controlling the behavior of radiant heat, it creates a more balanced indoor environment — not just measurably, but perceptibly.

Cooler walls in summer.
Moderate heat loss in winter.
More stable space all year round.

It appears as a thin, elegant, matte white layer, while supporting the natural functioning of the building with its outstanding vapor permeability .