Why prefinished panels are reshaping interior delivery
Once considered a final layer: applied on-site, subject to variables, trades and delays, coatings are now increasingly embedded earlier in the supply chain, transforming how surfaces are specified, produced and installed.
According to Andre Bates, CEO of Bates Surfaces, the future of interior surfaces lies in what can be resolved off-site long before a panel ever reaches the wall. At the core of this is prefinishing, the process of delivering fully finished panels ready for installation. In practical terms, it removes multiple steps from the construction sequence, such as coordinating painters, managing drying times, and accounting for variable site conditions.
Alongside this sits pre-priming, a more flexible option which prepares substrates for downstream finishing. Both approaches respond to an all-too-common industry pressure: reducing time, variability, and cost without compromising quality.
What makes this scalable is the variety of substrates now available for coating in controlled environments. From MDF and plywood to fibre cement and veneers, coatings are no longer limited by material type.
The UV advantage
Central to this shift, Andre explains, is UV curing technology. Unlike traditional water-based or solvent-based systems, which rely on heat to dry, UV coatings cure under light. In an industrial context, this enables something far more significant: speed and precision at scale.
A production line can take a raw panel through multiple coating stages and deliver a finished product in minutes. Not weeks.
But speed is only part of the equation, as UV systems also address two critical concerns in specification:
Environmental performance: UV coatings are typically free from volatile organic compounds (VOCs), avoiding the emissions associated with solvent-based systems
Material performance: The resulting surfaces are harder, more durable, and achieve higher consistency in gloss, colour and finish
Energy efficiency and sustainability gains
Low wastage and high repeatability.
Designed for consistency
One of the most persistent challenges in interior projects, notes Andre, is achieving uniformity across large surface areas. Variations in paint batches, application methods and site conditions can all compromise the final result.
Factory-applied coatings remove this uncertainty as a machine makes the same product time after time. This becomes especially critical in high-value applications. “A panel may leave a factory at a modest cost, but once installed, integrated with joinery, fixtures and surrounding finishes, its value multiplies,” says Andre.
It’s here where Bates Coating’s rigorous testing plays a defining role. Adhesion, abrasion resistance, UV stability and gloss levels are all measured, verified and even independently reviewed. In many cases, coatings are subjected to accelerated testing regimes to simulate years of wear in a compressed timeframe.
“A flawless finish, delivered consistently, reduces the risk of rework and enhances the longevity of the installation.”
Design flexibility at scale
While large-scale manufacturing often implies rigidity, modern coating lines are increasingly designed for flexibility. According to Andre, in markets like New Zealand, demand volumes are smaller and more varied than in Europe, so adaptability is essential.
“A single production line might shift between pre-priming tens of thousands of square metres of MDF one week, and delivering high-end veneer finishes the next,” he says.
It opens the door to just-in-time production. Rather than holding large inventories of prefinished panels in multiple colours, suppliers can stock base materials and apply finishes as needed. For clients, this reduces storage costs, minimises waste and improves responsiveness to changing design requirements.
For architects and designers, coatings are a medium for expression, with UV coating systems allowing for:
A full spectrum of gloss levels, from ultra-matte to high gloss
Clear and solid colours
Digital Print imagery from ceramic tile imagery to branding and one off feature walls.
Soft-touch, fingerprint-resistant finishes
Antibacterial surfaces for healthcare and food environments
Special effects, including digital printing and surface texturing
Meanwhile, advances in digital printing suggest a near future in which almost any visual can be embedded in a surface.
Despite these advancements, one misconception persists, according to Andre: the cost of prerefinished panels.
In reality, they often deliver cost efficiencies, particularly for high-spec finishes. On-site painting introduces labour costs, project delays and variability compared to factory finishing, consolidating these into a controlled, repeatable process.
The value proposition becomes even clearer when quality is factored in. A flawless finish, delivered consistently, reduces the risk of rework and enhances the longevity of the installation.
Ultimately, coatings reflect a shift in the construction industry, from fragmented, site-based processes to integrated, off-site solutions.
Written and first produced by ArchiPro Editorial Team