Can it be used on buildings above 18 metres?

Buildings above 18 metres carry additional requirements on the materials in an external wall, and buildings above 11 metres carry requirements of their own. In both cases compliance is assessed on the whole wall build-up, not on a single component. Contact our team with the building height, the use class and the proposed wall construction, and we will confirm what we can supply and provide the classification and test documentation to go with it.

What lead times apply for UK projects?

Aluminium facade cladding is manufactured to order rather than held as finished stock in every profile and finish, so lead time depends on the profile, the finish and the quantity. Wood grain and standard powder coated colours run faster than a bespoke colour. For a programme with a fixed cladding start date, talk to us early and we will confirm current lead times and, where it helps, stage deliveries to match the build sequence.

Facades

Q: Why choose aluminium over timber for a facade?

Beyond weather resistance, the real difference is ongoing cost. Timber facades need repainting or resealing periodically to hold their finish, sooner on an exposed or coastal wall. Knotwood's aluminium facade panels and battens carry a factory-applied finish that does not need that recoating cycle, which changes the long-term maintenance budget, not just the initial spec.

Q: What finishes are available for aluminium facade cladding?

Knotwood's aluminium panels come in architectural-grade finishes, including sublimated timber grain and solid powder coated options, applied at the factory rather than painted or stained on site. See our finishes page for the current range.

Q: Where are Knotwood facade systems manufactured?

Knotwood aluminium facade cladding and batten systems are manufactured in Australia by a family-owned business with a track record across residential and commercial projects, and supplied to the UK market. Contact our team for current UK stock availability and lead times.

Aluminium Facade Cladding

Knotwood aluminium facade cladding and batten systems deliver a timber-look finish without the maintenance cycle of timber. The profiles are engineered for sustained exposure to rain, frost and salt-laden coastal air, and are specified on residential, multi-unit and commercial projects.

Architects specify Knotwood facade systems where planning consent or a conservation-sensitive streetscape places the facade material under scrutiny. Builders and developers use the same profiles to achieve a consistent finish across terraces and new estates, without the variation of repainted timber. On period-property renovations, the timber grain finishes provide a traditional appearance without the upkeep of original joinery.

Timber facades absorb moisture, swell at the joints and require repainting or resealing every few years, more frequently on exposed or coastal elevations. Knotwood aluminium profiles provide the appearance of natural wood grain while resisting corrosion, remaining dimensionally stable in wet conditions and retaining their colour over the long term.

Aluminium systems for every facade

Knotwood-Aluminium-Facades-Cladding-Display

Cladding
View System

Knotwood Cladding forms a continuous, finished wall surface. It suits full elevation coverage where a clean, monolithic appearance with the warmth of a timber finish is required.

Battens
View System

Knotwood Battens add shadow lines and depth to a facade. They suit feature facades, entryways and any exterior where rhythm and texture are central to the design.

Knotwood-Aluminium-Screening-Louvres-Display

Louvres
View System

Knotwood Louvres add adjustability. Fixed louvre systems control light and airflow by design, while operable systems allow privacy, airflow and light to be adjusted as required.

FAQs

What is facade cladding?

Facade cladding is an external skin fixed to a building’s outer walls. It is sometimes described more broadly as exterior wall cladding when it covers a whole elevation rather than a single feature. Aluminium facade cladding systems use extruded aluminium panels or battens fixed to the building’s exterior framing, forming a durable, weatherproof layer over the structure while providing the finished appearance of the wall.

What is the difference between aluminium facade cladding and battens?

The difference is coverage and depth. Cladding boards sit close together for a continuous, sealed surface, suited to a monolithic facade look. Battens are fixed with visible spacing between each profile, so the wall behind is partially exposed, creating the shadow lines used on feature facades and entryways. Spacing is set to suit the design and the substrate rather than a fixed dimension. Both use the same aluminium system and concealed fixings.

What is a feature facade, and can aluminium battens be used for one?

A feature facade is an exterior treatment that uses cladding, battens or screening to add architectural interest, rhythm or material contrast to a building’s frontage. Aluminium battens suit feature facades because they create shadow lines and depth, and they are commonly used on entryways and key elevations where texture and visual rhythm are central to the design intent.

Why choose aluminium over timber for a facade?

Beyond weather resistance, the key difference is lifecycle cost. Timber facades need repainting or resealing periodically to hold their finish, more frequently on exposed or coastal elevations. Knotwood aluminium facade panels and battens carry a factory-applied finish that does not require a recoating cycle, which reduces the long-term maintenance budget rather than only the initial specification cost.

How does aluminium facade cladding compare to other exterior cladding materials?

Aluminium exterior cladding does not rot, swell or need repainting the way timber does, and unlike fibre cement it is lighter to handle on site and does not absorb moisture. On buildings with external wall requirements above 11 metres, reaction to fire classification under BS EN 13501-1 is confirmed for each profile.

What finishes are available for aluminium facade cladding?

Knotwood aluminium panels are available in architectural-grade finishes, including sublimated timber grain and solid powder coated options, applied at the factory rather than painted or stained on site. The current range is shown on the Knotwood finishes page.

How are Knotwood facade systems fixed to a building?

Knotwood facade profiles use concealed fixings within the cladding system, keeping the installed face clean and free of exposed fastener heads. The fixing method depends on the substrate and the exposure of the elevation, and engineering specifications are available for each profile. Knotwood’s technical team confirms the fixing detail for each project based on the wall build-up.

Can aluminium facade cladding be installed over an existing wall?

Yes. Recladding is a common application. The system fixes to a supporting framework rather than directly to the original wall face, so the existing substrate must be sound enough to carry the framework and its loads. Older solid-wall construction, render in poor condition and previous cladding all require assessment first. Knotwood’s technical team assesses suitability from photographs and a section through the existing wall.

Is a ventilated cavity needed behind the cladding?

Facade build-ups typically install the cladding as a rainscreen over a ventilated and drained cavity, so any water that passes the outer face can drain away and the wall behind can dry. The cavity depth, cavity barriers and breather membrane form part of the wall design rather than the cladding itself. Aluminium facade cladding suits this build-up because the panels are dimensionally stable and do not absorb moisture, so the outer skin performs consistently through wet and cold cycles.

What compliance standards apply to aluminium facade cladding in the UK?

UK facade systems are governed by the Building Regulations, particularly Approved Document B for fire safety, and the requirements affecting external wall systems on buildings above 11 metres. Reaction to fire performance is classified under BS EN 13501-1. Because compliance is determined by the whole wall build-up rather than the cladding alone, Knotwood’s technical team confirms product suitability and supplies supporting documentation based on the building height, use class and construction details.

Are Knotwood aluminium facade systems non-combustible?

Knotwood facade cladding and batten systems are manufactured from extruded aluminium. For UK specification, external wall systems are assessed against Approved Document B and the reaction to fire classification in BS EN 13501-1. Knotwood’s technical team provides the classification and test documentation for the specified profile, based on the building height and wall build-up.

Can aluminium facade cladding be used on buildings above 18 metres?

Buildings above 18 metres carry additional requirements on the materials in an external wall, and buildings above 11 metres carry requirements of their own. In both cases, compliance is assessed on the whole wall build-up rather than a single component. Knotwood’s technical team confirms product suitability and provides classification and test documentation based on the building height, use class and proposed wall construction.

Can aluminium facade cladding be used on commercial buildings?

Yes. Knotwood aluminium cladding and batten systems are specified on projects ranging from single-dwelling renovations to multi-unit developments and commercial builds. The same panel and batten sizes apply across all project types, so residential refurbishments and commercial fit-outs are specified from the same documentation.

Does aluminium facade cladding need planning permission?

Requirements depend on the building and its location. Recladding a house is often permitted development, but this changes if the property is listed, is in a conservation area or an AONB, or is a flat or maisonette. Local authorities also apply their own design guidance to street-facing elevations. The local planning authority should be consulted before a finish is specified, as a conservation officer’s view on colour and profile is easier to accommodate at design stage than after approval. Knotwood supplies samples and technical data to support planning applications.

Can aluminium facade cladding be used on a period or listed property?

Knotwood facade systems are used on period-property renovations where a traditional appearance is required without the upkeep of original joinery, and the timber grain finishes are designed for this purpose. Listed buildings and conservation areas require consent, with the decision resting with the local conservation officer, so samples should be presented at an early stage. Knotwood supplies physical samples and technical documentation to support listed building consent applications.

How does aluminium facade cladding perform on coastal buildings?

Salt-laden air is among the most demanding exposures for facade materials, particularly timber and steel. Aluminium does not rust, and the powder coated finish provides a barrier against the environment. On coastal projects, the practical requirements are the correct fastener specification and more regular fresh water washing to clear salt before it builds up on the finish. Knotwood’s technical team confirms the fixing specification and maintenance schedule based on the building location and elevation exposure.

How is aluminium facade cladding maintained?

Periodic washing with water and a pH-neutral detergent is all that is required. There is no sanding, oiling, staining or repainting at any stage, which is the practical difference between an aluminium facade and a timber one. Cleaning frequency depends on exposure. Sheltered urban elevations require minimal cleaning, while coastal and roadside elevations benefit from more regular washing to remove salt and traffic film.

How does Knotwood ensure consistent quality?

Knotwood’s aluminium is efficiently sourced ensuring consistent quality from start to finish. Knotwood is a family-owned business with a track record across residential and commercial projects.

Why Knotwood?

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Woodgrain Finishes

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Aluminium Facade Cladding

Aluminium systems for every facade

Cladding View System

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FAQs

What is facade cladding?

What is the difference between aluminium facade cladding and battens?

What is a feature facade, and can aluminium battens be used for one?

Why choose aluminium over timber for a facade?

How does aluminium facade cladding compare to other exterior cladding materials?

What finishes are available for aluminium facade cladding?

How are Knotwood facade systems fixed to a building?

Can aluminium facade cladding be installed over an existing wall?

Is a ventilated cavity needed behind the cladding?

What compliance standards apply to aluminium facade cladding in the UK?

Are Knotwood aluminium facade systems non-combustible?

Can aluminium facade cladding be used on buildings above 18 metres?

Can aluminium facade cladding be used on commercial buildings?

Does aluminium facade cladding need planning permission?

Can aluminium facade cladding be used on a period or listed property?

How does aluminium facade cladding perform on coastal buildings?

How is aluminium facade cladding maintained?

How does Knotwood ensure consistent quality?

Why Knotwood?

Free Estimations & Support

Huge Range of Woodgrain Finishes

CPDs & Educational Support

More on Facades

Beyond Timber: Smarter Choices for Coastal Architecture

How Knotwood Supports Sustainability and a Healthy Earth

Why More UK Designers, Developers, and Contractors Are Choosing Knotwood.

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View System

Free Estimations
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Huge Range of
Woodgrain Finishes