The insulating tress is used to fill the recess around the window, between the frame and roof structure. It allows easy and effective fitting additional roof window insulation. Application of this tress, significantly reduces thermal bridging.

The tress is made of specially impregnated sheep wool 50mm in diameter and 5m long. It is a natural and ecological product without any smell, it is gentle on the skin and does not cause eye irritation.

It is easy to cut and form on installation. Thanks to its high elasticity, it perfectly fills all cavities between the window and structural elements of the roof, ensuring superb insulation.