B2 Fire Class in Polyurethane Decorative Profiles
B2 is a classification used for organic building materials under DIN 4102-1. This guide explains the registered fire class of Polure polyurethane decorative profiles and their application conditions.
Short answer: the fire class of Polure polyurethane products
Polure polyurethane decorative profiles have the registered fire class B2 (DIN 4102-1) and include phosphorus-based flame retardant additive.
This information indicates the product classification under DIN 4102-1. Polyurethane profiles are decorative and non-load-bearing; they are not intended to carry loads, televisions or chandeliers.
How are DIN 4102-1 fire classes read?
DIN 4102-1 evaluates building materials according to their fire behaviour within A and B classes.
- A class refers to mineral or inorganic building materials.
- B classes are used for organic materials.
- B2 is the normally flammable class.
- B1 is the class above B2.
- B3 is the easily flammable class.
A product class describes the material’s behaviour under test conditions and does not replace all project decisions concerning the application area.
What is B2 not?
B2 is the normally flammable class in DIN 4102-1; it is not B1 or A.
B2 identifies only the classification within DIN 4102-1. The product should be kept away from open flames, high-heat sources and unsuitable installation conditions.
What is the relationship with EN 13501-1?
EN 13501-1 classes are used for the classification of building materials in Europe.
EN 13501-1 classes and DIN 4102-1 classes do not correspond directly. Therefore, B2 information provided under DIN 4102-1 should not be interpreted by directly converting it to another standard.
Use near fireplaces, heat sources and lighting
In fireplaces with a real flame, the polyurethane profile must be installed without direct contact with the heat source.
A suitable heat insulation barrier and sufficient distance are planned for the application. Points exposed to heat must also be assessed in electric fireplace and LED applications. For fireplace surround applications, request technical information from the Polure sales team regarding project conditions and product placement.
How can a fire class document be requested for a project?
A request for a fire class document is assessed according to the building’s purpose of use and the project requirements.
Building regulation conditions for facades, escape routes and similar areas should be reviewed with the project designer. A technical data sheet for Polure products may be requested from the sales team.
