Suitable coatings definiing
reaction-to-fire performance on wood

Fire safety is a crucial consideration in commercial and infrastructure environments, where stringent regulations govern materials and coatings to minimise fire risks. One key classification in fire-rated coatings is B-s1,d0 and B-s2,d0, which define the reaction-to-fire performance of construction materials, particularly when upgrading wood substrates. By improving fire resistance, businesses can enhance compliance, safety, and structural integrity.

What is B-s1,d0 and B-s2,d0 Classification?

The B-s1,d0 and B-s2,d0 fire ratings are derived from EN 13501-1, the European standard for fire classification of construction materials. They are broken down as follows:

• B – Limited combustibility, meaning the material has a low contribution to fire. The aim of fire-rated coatings is to upgrade wood from its typical Euroclass D rating to Euroclass B.
• s1 – Very limited smoke production in case of fire, a stricter classification than s2.
• s2 – Moderate smoke production in case of fire.
• d0 – No flaming droplets or particles, reducing fire spread risk.

It is important to note that wood is combustible rather than flammable, meaning it can burn but does not easily ignite without sufficient heat exposure. With the right fire-rated coatings, wood can be upgraded to achieve B-s1,d0 or B-s2,d0 classification, significantly improving fire safety performance in commercial and infrastructure projects.

Upgrading Wood Substrates for Enhanced Fire Resistance

Wood generally has a Euroclass D rating, making it moderately combustible. However, with specialised coatings, it can be enhanced to Euroclass B, significantly improving fire reaction performance.

Key Methods for Upgrading Wood Substrates:

1. Fire Retardant Primers & Coatings
• Fire-resistant coatings form a protective barrier that slows down ignition and flame spread.
• These coatings help achieve B-s1,d0 or B-s2,d0 compliance, reducing smoke emissions and preventing flaming droplets.
2. Intumescent Coatings
• Upon exposure to heat, intumescent coatings expand and create an insulating char layer, delaying fire spread.
• Ideal for structural timber in commercial and infrastructure applications.
3. Specialist Topcoats
• Enhances durability and provides additional fire resistance.
• Protects wood from environmental damage while maintaining fire-rated properties.

Intercoat’s Fire-Rated Product Range

A leading provider of high-performance coatings, Intercoat offers a specialised fire-rated coating range, including the Irufire range, designed to help businesses and infrastructure projects meet stringent fire safety regulations.

Key benefits of Intercoat’s fire-rated solutions:

• B-s1,d0 and B-s2,d0 Certified Coatings: Meeting various fire safety requirements for different applications.
• Enhanced Fire Reaction Time: Slows down flame spread and reduces smoke development.
• Durable Protection: Long-lasting performance in high-traffic environments.
• Versatile Application: Suitable for timber, MDF, plywood, and other wood-based substrates.

Why Upgrade to Fire-Rated Wood Coatings?

For commercial buildings, infrastructure, and public spaces, fire safety is not just a regulatory requirement but a crucial aspect of risk mitigation. Investing in fire-rated coatings can:

• Ensure compliance with fire safety regulations.
• Improve building safety and protect occupants.
• Reduce potential property damage and liability risks.
• Extend the lifespan of wooden materials while maintaining their aesthetic appeal.

Upgrading wood substrates with B-s1,d0 and B-s2,d0 fire-rated coatings is essential for enhancing fire safety in commercial and infrastructure environments. Intercoat’s Irufire product range provides high-performance solutions that help businesses and builders meet fire regulations while improving the overall safety and durability of wood materials.

For more details on fire-rated coatings, visit Intercoat’s Fire Rated Range and ensure your projects meet the highest fire safety standards.