Wood-fibre ETICS

An external insulation system with wood-fibre boards: a dense, breathable bio-based insulant, bonded and anchored to the wall, base-coated with mesh and finished with mineral render. Besides insulating in winter like any system, its high mass shifts the summer heat, keeping the house cool; it is vapour-open and of renewable origin. It is the choice of natural building and summer comfort.

Wood-fibre ETICS is an external insulation system in which the insulant is a board of pressed wood fibres, dense and renewable. The laying follows the logic of the classic system — bonding, anchoring, reinforced base coat, finish — but the material changes the behaviour: more mass, more breathability, biological origin.

Wood fibre is dense and heavy compared with synthetic insulants: besides slowing the heat flow (insulation), it stores heat and releases it with a delay. This «time shift» of many hours means the afternoon heat reaches the inside in the evening, damped: in summer the house stays cool. It is the quality that sets massive insulants apart from light ones, at the same winter U-value.

Like rock wool, wood fibre is vapour-open: the wall «breathes» and moisture dries, reducing condensation. It is also a material of plant origin, renewable and low-impact, often chosen in natural building for healthiness and a low carbon footprint. The finish must stay vapour-open (mineral renders and paints) so its quality is not lost.

Wood fibre dislikes prolonged liquid water: on site it must be protected from rain until the base coat, and at the foot the plinth is detailed so it does not get wet. It is heavier than EPS, so adhesives and anchors must be sized accordingly. Reinforced base coat with mesh, corner beads, drips and finish follow the system's rules, with products compatible with the fibrous substrate.