Aluminium in Building:

Aluminium alloy components used in building complies as follows. As defined by BS 476: Part 4 and the 1974 SOLAS Convention (as amended) aluminium alloys are ‘non-combustible’ and also provide Class 1 surface spread of flame to BS 476: Part 7.

In addition, BS 476: Part 3 covers external fire exposure roof tests and the classifications laid down in the standard range from AA to DD. The first letter refers to the fire penetration performance and the second letter to the surface spread of flame.

Aluminium and its alloys are rated AA, the highest possible under this classification system. Materials are also tested for fire propagation performance to BS 476: Part 6 (1989) and coating systems are taken into account. Aluminium achieves excellent ratings under this Standard.

Qualicoat Powder Coat Process 1. BS476:

British Standard 476 refers to fire tests on building materials and structures. The parts of this standard that are of most relevance to powder coatings are Parts 6 and 7.

Part 6 – Fire Propagation

The result of this test is a fire propagation index. It is a measure of the contribution to fire growth made by an essentially flat surface. The results of the test are specific to the test specimen i.e. the product on that particular substrate in the form in which it was tested. Therefore it cannot be used as a method for assessing the product in all situations.

Part 7 – Surface Spread of Flame

This is a method of measuring flame spread along the surface of a specimen. Again the results of the test are specific to the test specimen i.e. the product on that particular substrate in the form in which it was tested.

Therefore it cannot be used as a method for assessing the product in all situations. As defined in the UK Building Regulations 2000 – Fire Safety Approved Document B, the highest product performance classification for wall or ceiling linings is Class 0.

This is achieved if a material; (a) Achieves a class 1 rating in BS476 Part 7, and (b) Achieves a fire propagation index of not more than 12 and sub-index of not more than 6 in BS476 Part 6.

Test Results

Interpon D1000 series and D2000 Series have been tested to BS476 Parts 6 and 7 and have met the criteria for Class 0 building regulation approval.

London Underground Approval:

  • Smoke Emission & Toxic Fume Emission
  • Qualitative analysis (what is emitted)
  • Quantitative analysis (how much is emitted)
  • Flammability
  • Fire Propagation
  • Surface Spread of Flame

Fire Data Sheet for the Alideck Insert

Alideck Slip Resistant Inserts are made from PVC Polymers, they are generally referred to as “Self-Extinguishing” which means that they will burn whilst a high enough heat source of flame is applied to them but once removed they stop burning.

Downloads

Our fire resistance data sheets and fire classification reports can be downloaded direct from our technical downloads page by clicking here: Fire Resistance Documents

Euroclass Fire Classifications

Once tested, products are categorised using regulated testing methods in Euroclasses A1 to F. The government requirements to allow legal use of building products on balconies in residential buildings is A2-s1, d0 or better.

Our aluminium decking with the protective powder coating achieves A2-s1, d0 and without powder coating achieves the highest possible rating of A1. Both of which achieve the required classification.

Rating Combustibility
A1 Non-Combustible
A2 Limited Combustibility
B Combustible materials
– very limited contribution to fire
C Combustible materials
– limited contribution to fire
D Combustible materials
– medium contribution to fire
E Combustible materials
– high contribution to fire
F Combustible materials
– easily flammable
Rating Smoke Emission during combustion
S1 Quantity/speed of emission absent or weak
S2 Quantity/speed of emission of average intensity
S3 Quantity/speed of emission of high intensity
Rating Production of flaming droplets/ particles during combustion
D0 No dripping
D1 Slow dripping
D2 High dripping