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  • WIS 2/3-3 Flame retardant treatments for timber products

  • TRADA Technology Ltd
  • August 2019
  • WIS 2/3-3
  • Wood Information Sheet, PDF
  • 10
  • Free of charge
  • £12.00 (zero VAT)
(WOOD INFORMATION SHEET)
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In many situations, timber and wood-based materials may be used in their natural, untreated state. However, flame-retardant (FR) treatments extend their use to situations that demand enhanced 'reaction to fire' properties.

This Wood Information Sheet (WIS) covers treatments that may be applied to wood and wood-based products both factory and site applied to upgrade their fire performance to Euroclass B or C or National class 1 or 2 (or Class '0', found only in Approved Document B to the Building Regulations (before the 2019 edition), where it is defined by a combination of performance in tests according to BS 476 Parts 6 and 7).
Contents:

•Types of FR treatment
•Compatability of FR timber products and treatments with additional coatings
•Performance requirements
•Fire test evidence
•CE marking

This Wood Information Sheet was revised in August 2019. The key changes include:

•Class 0, which is found only in Approved Document B to the Building Regulations (before the 2019 edition)
•European classes of reaction to fire performance are now the norm because of the need to comply with European product standards
•Updates to the three types of FR treatments
•Updates to treatments applied on site
•Tables 1 and 2
•UK Building Regulations
•Durability of reaction to fire
•The addition of two new standards for common wood-based products.
In many situations, timber and wood-based materials may be used in their natural, untreated state. However, flame-retardant (FR) treatments extend their use to situations that demand enhanced 'reaction to fire' properties.

This Wood Information Sheet (WIS) covers treatments that may be applied to wood and wood-based products both factory and site applied to upgrade their fire performance to Euroclass B or C or National class 1 or 2 (or Class '0', found only in Approved Document B to the Building Regulations (before the 2019 edition), where it is defined by a combination of performance in tests according to BS 476 Parts 6 and 7).
...more