FIRE PROTECTION BY FLOCKING
DOSSOLAN 3000 ®

Flocking is a passive fire protection technique that involves spraying insulating material in the form of fibers onto structures. This material, composed of mineral wool, cellulose fibers or other non-combustible substances, is mixed with a binder and sprayed in wet form onto the element to be protected, such as metal beams, slabs or walls. As it dries, it forms an insulating layer that can withstand fire for a given period of time, from a few minutes to several hours, helping to prevent structural collapse and enable occupants to evacuate and firefighters to intervene.

Fibrous flocking is an insulating material made essentially of mineral wool, in gray or white. This process is rot-proof, rodent-proof and pest-proof.

Flock insulation absorbs expansion without cracking, and is applied by spraying. This fibrous process is used not only for thermal insulation and acoustic correction, but also for fire protection, thanks to its fire-retardant properties.

Flocking, a key method of passive fire protection, is implemented with precision and to strict standards. The technique is applied wet: an insulating substance is sprayed directly onto the substrate to be protected, after applying a primer, such as a suitable adhesive, to metal surfaces, or fixing a wire mesh to other types of substrate.

Each step complies with the guidelines of Document Technique Unifié (DTU) 27.1, guaranteeing optimum quality and efficiency. To ensure the material’s adhesion and performance, the ambient temperature during application must be between +5°C and +45°C. By following these guidelines, flocking forms an effective protective barrier, capable of withstanding fire and maintaining structural integrity in the event of a fire.

DOSSOLAN 3000 is a fire-retardant insulation based on slag mineral wool, formulated in lightweight flakes for easy application in passive fire protection.
Versatile, it can be used in a variety of applications, such as :

• Fire protection of sheet steel ducts used for ventilation and smoke extraction
• Fire protection of steel structures
• Fire protection of ceilings and horizontal membranes under wooden, steel and/or concrete frames and floors
• Fire protection of double-skin vertical cladding

Its fibrous composition makes it an ideal choice for enhancing fire safety in a multitude of construction contexts.