A method of bonding together surfaces of two or more elements, whereby at least one of the two or more elements is a mineral wool element, said mineral wool element(s) being bound by a mineral wool binder, comprises the steps of providing two or more elements; applying an adhesive to one or more of the surfaces to be bonded together before, during or after contacting the surfaces to be bonded together with each other, curing the adhesive, wherein the adhesive comprises at least one protein; at least one phenol and/or quinone containing compound, and/or at least one enzyme.

A fire-protecting insulation product has air-laid mineral wool fibres and a binder. The binder is the result of curing a binder composition comprising at least one hydrocolloid. The product further comprises a particulate endothermic material.

The invention relates to a mineral wool product comprising mineral fibers bonded by a cured binder wherein the binder in its uncured state comprises at least one protein and at least one enzyme.

The invention relates to an aqueous binder composition for mineral fibers comprising at least one hydrocolloid.

Multi-ply structures incorporating adhesive compositions, products produced from such structures, and methods of producing the structures.