Fire rated insulation boards, made from non-combustible materials, work by slowing down the spread of fire and containing it in one room or compartment for a length of time long enough for people to leave quickly and safely.

Passive fire protection is often added to with fire-rated insulation and is usually unnoticeable until it is required to keep the building users safe.

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Fireproof Insulation Ratings

Fireproof insulation is classified in various ratings to help users make the right choice when purchasing and installing this important safety material. The most common classifications for non-combustible insulation are:

• Combustibility: This is divided into 7 classifications from A1 (non-combustible), A2 (limited combustibility) to F (easily flammable). This is the most important classification ranking as it can be affected by other safety measures that are present in the building and the types of activities that take place within the building.


• Smoke emission: Categorised into 3 standards (s1, s2 or s3), this classification suggests the amount of toxic smoke emission that is released during a fire and should be chosen depending on the user.


• Production of flaming droplets: This range focuses on the flaming droplets that can fall from the insulation when it is exposed to a fire. The standards range from d0 (highest product) to d1 and d2.

Types of Fire Resistant Insulation

It is important to be aware that all types of material will eventually become flammable under extreme temperatures, as no material is fully “fireproof” but instead “fire resistant” or “fire retardant”. Despite this, several different “fire resistant” materials can be used to help reduce the risk of fire and to suit all types of buildings and environments. Explore the varieties below or get in touch with our expert team for further information on the best product for your construction.

Fireproof Mineral Wool	Mineral wool, also known as rock wool or stone wool, can resist up to temperatures of 1000 degrees Celsius and has a class A1 fire rating.
Fireproof Fibreglass Insulation	Fibreglass insulation has natural heat-resistant properties and can resist up to 100 degrees Celsius before melting rather than burning.
Fireproof Foil and Multifoil Insulation	These materials have an excellent fire rating for fire propagation and reducing the spread of flames. They are also tested to the highest standard.
Fireproof Insulation Boards	Fireproof plasterboards have fire-retardant additives and a high-density core for better fire protection. In high fire risk areas, these insulation boards are recommended.
Fire Rated Expanding Foam	Fire-rated expanding foam can provide up to 240 minutes of fire protection, serving as a barrier against gas and smoke. Suitable for all building types.

Fire Rated Insulation Boards from Armstrong Cheshire

Buy your fire rate insulation boards from Armstrong Cheshire- the trusted online supplier. We deliver all timber and building materials across the nation to ensure your projects do not face delays or setbacks that can in turn lose you money.

With a 5-star rating on Trustpilot, you can trust our expertise as well as our high quality products ranging from insulation to decking and bricks. Chat with our expert team and always reach a human who can help with anything from lower prices on a bulk order, to knowing the ideal fire rated insulation board for your project.

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