Durelis Vapourblock® Airtight Structural Chipboard

Airtight and Vapour‑Resistant Structural Board for Timber Frame Construction

Durelis Vapourblock® is a high‑performance airtight structural chipboard with an integrated vapour barrier, designed for use in timber frame construction, roofing, and wall applications.

By combining structural strength, airtightness, and vapour control in a single board, Vapourblock simplifies construction build‑ups and improves overall building performance. It is particularly suited to low‑energy and passive house projects, where airtightness is critical.

Integrated Airtight Vapour Barrier

Vapourblock features an industrially applied vapour‑retarding layer, providing consistent performance across the entire board surface.

Key benefits include:

Integrated vapour barrier with consistent resistance
Excellent airtightness (<0.001 m³/m²/h at 50Pa)
Reduces the need for additional membranes
Helps achieve airtight building envelopes

All joints should be sealed with appropriate airtight tapes to maintain performance.

Moisture‑Resistant P5 Structural Chipboard

Manufactured as a P5 structural board, Vapourblock offers reliable performance in humid environments:

Suitable for service class 2 applications
Moisture‑resistant for internal structural use
Strong load‑bearing capability

This makes it well suited to walls and roofs in timber frame systems, where both durability and moisture control are required.

Applications

Vapourblock is widely used in modern construction systems where airtightness and vapour control are essential:

Timber frame walls
Roof structures and warm roof applications
Airtight internal linings
Low‑energy and passive house builds

Its ability to combine air barrier, vapour control layer, and structural board in one product makes it an efficient solution for reducing installation time and complexity.