Weatherboard has become an increasingly familiar part of the housebuilder’s façade palette, providing texture, contrast and the appearance of traditional timber without many of the maintenance considerations associated with natural wood.
But when weatherboards can create a very similar finished appearance, should aesthetics and cost be the only factors driving specification?
Fire performance, durability and long-term performance all deserve consideration. And when it comes to reaction to fire, understanding what an A1 classification represents can help housebuilders and specifiers make more informed choices.
What does A1 actually mean?
Reaction-to-fire classifications under BS EN 13501-1 provide a recognised way of describing how construction products behave when exposed to fire.
The scale runs from A1 through to F, with A1 representing the highest reaction-to-fire classification.
This distinction matters. Terms such as fire resistant, fire rated and non-combustible are sometimes used interchangeably, when the actual performance and classification of products can differ considerably.
It’s also important to look beyond the headline classification and understand the application in which a product has been tested, including its substrate, fixings, orientation and configuration.
For specifiers, the message is simple: understand exactly what has been tested and classified.
Is A1 required for every home?
No.
Building Regulations establish different requirements depending on factors including building type, height and use. A1 is therefore not a universal requirement for weatherboard on every new home.
But regulatory minimums and specification choices aren’t necessarily the same thing.
Housebuilders need to consider how materials will perform over the long term, balancing compliance with safety, durability, maintenance, design and consistency across developments.
Perhaps, then, the better question isn’t:
“Do we have to specify A1?”
But:
“If an A1 solution can deliver the appearance and performance we need, why wouldn’t we consider it?”
Performance without compromising design
Higher-performing façade materials don’t have to mean compromising on aesthetics.
Modern fibre cement weatherboards can recreate the character and texture associated with timber while offering a durable, factory-finished façade.
Colour provides further design flexibility, allowing housebuilders to create variation between plots, respond to local architectural character and combine weatherboard with brick, render and other façade materials.
The conversation doesn’t need to be design versus performance. The objective should be to achieve both.
The complete façade still matters
Of course, specifying an A1 weatherboard doesn’t make an entire external wall A1.
Fire performance must be considered as part of the complete façade design, including insulation, membranes, support structure, cavity barriers, fixings and other components.
An A1 facing material isn’t a substitute for competent façade design. Instead, it provides one clearly defined element within a wider approach to façade performance.
Where Supertech fits
Benx Supertech Weatherboard combines the appearance of traditional timber weatherboarding with an A1 reaction-to-fire classification to BS EN 13501-1:2018 in its classified applications.
Supertech Weatherboard is BBA accredited and available in a broad palette of factory-applied finishes, providing a durable, water resistant and low maintenance façade solution.
For housebuilders reviewing existing specifications or considering an alternative fibre cement weatherboard, it’s an opportunity to look beyond appearance alone and consider what more the material could deliver.
Choosing a façade material shouldn’t happen on screen alone.
Request a free Supertech sample to experience the colour, texture and finish first-hand, or speak to our team about your next development.