A method for producing a hydrophobic element is disclosed and includes the following steps: a) preparing a mixture of water and an organic material from sustainably renewable resources, b) moulding the mixture prepared in step a) to obtain a moulded element, c) drying and densifying the moulded element obtained in step b) to obtain a dried and densified element-, and d) impregnating to the core the dried and densified element obtained in step c) with a binder composed of organic materials from sustainably renewable resources. A covering hydrophobic element containing more than 90%, and preferably more than 99%, of an organic material from sustainably renewable resources is also disclosed.

A method for producing a hydrophobic element is disclosed and includes the following steps: a) preparing a mixture of water and an organic material from sustainably renewable resources, b) moulding the mixture prepared in step a) to obtain a moulded element, c) drying and densifying the moulded element obtained in step b) to obtain a dried and densified element-, and d) impregnating to the core the dried and densified element obtained in step c) with a binder composed of organic materials from sustainably renewable resources. A covering hydrophobic element containing more than 90%, and preferably more than 99%, of an organic material from sustainably renewable resources is also disclosed.

Roof forming element, a plurality of which may form a roof of a building, comprising base part comprising an elongate roof plate of a polymer, a cover for covering the roof plate, and coupling means for coupling the roof forming element in use to further, neighbouring roof forming element, the base part comprising an elongate reinforcement part comprising a strip comprising polymer and unidirectional fibers, bonded to the base part at the interior side of the base part and extending in the length direction along the length of the base part, the elongate reinforcement part covering at least a part of the width of the base part,the strip of the elongate reinforcement part having a higher Young's modulus than the base part, or at least a part of the base part to which the elongate reinforcement part has been bonded.

Roof forming element, a plurality of which may form a roof of a building, comprising base part comprising an elongate roof plate of a polymer, a cover for covering the roof plate, and coupling means for coupling the roof forming element in use to further, neighbouring roof forming element, the base part comprising an elongate reinforcement part comprising a strip comprising polymer and unidirectional fibers, bonded to the base part at the interior side of the base part and extending in the length direction along the length of the base part, the elongate reinforcement part covering at least a part of the width of the base part,the strip of the elongate reinforcement part having a higher Young's modulus than the base part, or at least a part of the base part to which the elongate reinforcement part has been bonded.

A method for producing a covering element made from natural fibres, in particular cellulose, impregnated with bitumen, includes a step of coating at least one of two faces of a fibre mat (4) followed by a step of impregnating with bitumen, the coating being carried out with a liquid composition (5) including at least one resin and/or at least one pigment. The liquid composition is a dye composition including at least one pigment and at least one resin, and the method involves adding an additive to the liquid composition (5), the additive having fireproof properties and including at least graphite and a cooling agent. Preferably, the mat (4) is coated with the liquid composition including the fireproof additive using a roller.

A method for producing a covering element made from natural fibres, in particular cellulose, impregnated with bitumen, includes a step of coating at least one of two faces of a fibre mat (4) followed by a step of impregnating with bitumen, the coating being carried out with a liquid composition (5) including at least one resin and/or at least one pigment. The liquid composition is a dye composition including at least one pigment and at least one resin, and the method involves adding an additive to the liquid composition (5), the additive having fireproof properties and including at least graphite and a cooling agent. Preferably, the mat (4) is coated with the liquid composition including the fireproof additive using a roller.

A self supporting panel system used to fabricate ceilings, floors, walls, or roofs. The panel system is assembled from a plurality of panels, each having a core that is sandwiched between opposing plate members. In a preferred embodiment, the core of each panel includes a unifying material to enhance the load bearing capacity of the panel.

A self supporting panel system used to fabricate ceilings, floors, walls, or roofs. The panel system is assembled from a plurality of panels, each having a core that is sandwiched between opposing plate members. In a preferred embodiment, the core of each panel includes a unifying material to enhance the load bearing capacity of the panel.

A tufted geosynthetic lightweight ballast system for roof protection in which the system comprises a composite of one or more geotextiles tufted with one or more synthetic yarns.

A tufted geosynthetic lightweight ballast system for roof protection in which the system comprises a composite of one or more geotextiles tufted with one or more synthetic yarns.