GUTEX Ultratherm - the 100% rainproof sarking board made from sustainable wood

Sturdy and reliable
Robust and watertight thanks to the patented tongue-and-groove connection, additionally tested in the toughest hail protection class HW5 (TÜV).
Cools, warms, and regulates moisture
Can be used in roofs and walls with rainscreen façades for outstanding heat storage capacity. The low rated lambda value allows for a low construction height of the overall structure.
Sustainable and natural
Made in the Black Forest from sustainable wood, recyclable, and ecologically safe (natureplus® certified).
100% rainproof
Proven to be completely rainproof,
even with joints open up to 3 mm.
Quick to install
Thanks to the patented tongue-and-groove connection, GUTEX Ultratherm
is laid faster than the centre-aligned standard. The sarking membrane at the eaves can be clamped into the connection without adhesive tape.
Saves money
The sarking board is watertight. You can skip additional sarking membranes.
Can be exposed to the elements for 6 months
Outdoor weathering is possible for up to six months without
additional film. This allows for relaxed planning.