Fireshell® F1E’s intumescent technology is designed to protect exterior timber substrates and reduce the spread of flame from one building to another and vertically up a multi-storey building. The coating forms thick char layer insulating the substrate from heat., preventing ignition or flame spread on the coated surface.
Specify Fireshell® F1E over timber substrates when a noncombustible Type A or Type B cladding classification is required. This is typically when the wall is within 1m of a boundary line or the height of the wall is over 10m.
It is a highly durable and flexible product, designed for external use as an industrial coating. The systems performance under ISO 5660 for external timber cladding is allowing its use as an alternate solution for a range of boundary compliance requirements. Contact Exfire to discuss your specific project’
Performance
In addition to AS3959 compliance Fireshell® F1E Achieves a Type A noncombustibility fire rating for timber cladding as required by C/AS1 Table 5.1 and C/AS2 Clause 5.8 and Appendix C7.1 . This is generally required within 1m of a boundary line, walls over 10m in height or on certain risk type buildings such as SI (care and detention).
Note this will be outlined in your project fire report.
Substrate Requirements
A Type A fire rating is achievable on timber substrates with a minimum thickness of ≥12mm and density of ≥370kg/m3.
This includes timber species such as Western Red Cedar, Pine Radiata, thermally modified timbers i.e. Vulcan, Taiga and Taxon, as well as Accoya.
Fireshell® F1E is a self-priming product, and is applied direct to the timber substrate.
Topcoat
Fireshell® F1E does not require a topcoat for fire classification to be achieved, or for the durability of the system. We do suggest specifying the Wattyl Solagard for a choice of finish colour and reduced maintenance of the intumescent.
Application
Fireshell® F1E can be applied either on or offsite contact us for one of our preferred applicators. Either spray application or brush and roller application is available. For the best possible finish, spray application via a preferred applicator is advised.
Please note that the intumescent must be left for 3 weeks to cure before an acrylic topcoat is applied. Failure to do so may result in bubbling of the topcoat.
Sustainability
Fireshell® F1E is a water-based intumescent.
It has low VOCs of 19g/L.
Reduce the use of non-environmentally sustainable products to achieve non-combustible cladding by using Fireshell® F1E on timber cladding.
Risk Mitigation
If your project does not require a Type A non-combustibility or AS3959 classification on your timber through regulation, this system can be used for risk reduction and in some cases to lower your insurance premiums. Get in touch to discuss further.
