BS 476 Fireproof Calcium Silicate Board

BS476-4 Calcium Silicate Board which can be indoor ceiling and partition application purpose with different density and thickness. 

PHYSICAL FEATURES

Fire Resistance

The most important requirement in any building is fire safety. To this end, HBD provides excellent protection from fire and out performs all other building material's results achieved in standard fire tests contained in various parts of British Standard- 476. HBD Calcium Silicate Boards have Class-1 Surface Spread of Flame with Ignitability as "P"- not easily ignitible, hence can provide good fire resistance in the range of 30 minutes to 240 minutes, depending on the construction design. The fire test methods used are:

Non-Combustibility

Building materials are classified as either non-combustible or combustible according to their behavior when tested to BS 476-Part - 4:1970. This test provides a measure of the propensity of materials to generate heat and flames under standardized heat exposure conditions. It represents the highest and most stringent standard for the fire performance of materials. HBD Calcium Silicate Board has gone through this test and has been rated as Non-Combustible by CBRI, Roorkee.

Surface Spread Of Flame

This test, as specified in BS-476-Part-7: 1971, is used to determine the tendency of materials to support the spread of flame across their surfaces. Materials are classified Class-1 to Class-4, in descending order of performance. These classifications are applied mainly to wall and ceilings. In this test too, HBD passed with the highest rating of Class-1.

More information, please visit at www.hocre-board.com or send email to info@hocre-board.com