Results for tag "powder-coating-mdf"

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Climateline helps throughput on Niche Modular’s education builds

Niche Modular’s delivery of the Mahinawa Specialist School’s newest Satellite Unit at Porirua College, New Zealand, demonstrates how volumetric construction, when matched with aligned materials and systems, can meet complex educational needs with speed, quality and control.
Mahinawa caters to students aged 5 to 21 with intellectual, physical, emotional and behavioural challenges. With high staff-to-student ratios and integrated therapeutic and educational support, the school required precise, high-performance interior finishes suitable for a sensitive environment.

For Petone-based Niche Modular, the project aligned well with its modular approach. The company—now New Zealand’s largest modular builder—focuses on delivering 95 per cent of each building offsite. This factory-first strategy enables greater consistency in finishes, quality assurance and speed to site.

Rick Bell, Business Development Director at Niche Modular.
Rick Bell, Business Development Director at Niche Modular.

“If we can build it in the factory, we will, whether it’s a deck, a stair, or something custom,” said Rick Bell, Business Development Director at Niche Modular. “The goal is always to reduce what needs to be done onsite and improve overall efficiency.”

For Mahinawa, Niche used ClimateLine prefinished plasterboard from Climate Surfaces for all internal wall linings. Designed for prefabricated construction, ClimateLine’s coated GIB substrate removes the need for plastering or painting, reducing both labour and drying time.

 

“For us, it was the efficiency of being pre-finished while maintaining acoustic value,” said Bell. “It’s glued, not nailed—simple, clean, and it removes trades from the equation.”

Niche Modular used ClimateLine prefinished plasterboard by Climate Surfaces for all internal wall linings.

Bell estimates that using ClimateLine has led to a significant reduction in internal wall costs compared to traditional methods. “We’re saving around 30 per cent by eliminating fixing, stopping and painting,” he said. “There’s less waste too—everything is cut precisely, and we only trim for skirting.”

That level of simplification matters in modular construction, where the sequencing of factory-based trades must be tightly managed. For Niche, ClimateLine’s prefinished nature contributes to consistent throughput in its Lower Hutt facility, which spans more than 3,500 square metres.

“You don’t want painters and stoppers coming into your factory when your core objective is flow-line production,” Bell said. “It’s quicker, cleaner and reduces rework.”

Mahinawa School’s modules were fully lined, with joinery and services installed prior to transportation. Because the boards are factory-finished, they eliminated the risk of paint cracking or surface delamination during handling and installation.

“Because we’re transporting fully lined modules, we needed a wall finish that would hold up across multiple movements and installations,” Bell said. “We’ve tested other systems, but ClimateLine consistently holds up. No delamination, no cracking, just install and move on.”

The relationship between Niche and Climate Surfaces dates back over seven years, originating from an earlier phase of modular development that preceded Niche Modular’s current structure. That foundation laid the groundwork for ongoing collaboration and has seen ClimateLine become a core part of Niche’s internal fit-out strategy.

“We see ClimateLine as a product that aligns with the offsite methodology,” Bell said. “It’s all about simplification and precision.”

To manage compliance, quality and construction tracking, Niche uses a cloud-based documentation platform that supports both factory and site operations. The system enables digital sign-offs and photographic inspection workflows in place of on-site checks.

“Our local council doesn’t even come to the factory because it’s all documented digitally,” Bell said. “All inspection phases are photographed, logged, and submitted as part of a structured approval process.”

That integrated workflow helps Niche maintain pace and control across multiple projects. The company recently completed Wellington Hills College in just 100 days—a 16-classroom build on a greenfield site.

“It’s unheard of, but it only worked because of the experience we’ve gained beyond traditional construction methods,” Bell said. “It’s things like site works, landing, and the people we have within the company—how efficient they are at design, construction, and the factory.”

While Mahinawa’s scale was modest, its delivery was no less complex. The requirement for hygienic surfaces, reduced trades and minimised site disruption made ClimateLine a natural fit.

With a Group 1-S fire rating and impact resistance suited to institutional settings, the product is designed for health, education and high-traffic environments. For modular builders like Niche, its benefits are magnified by the efficiencies of offsite fabrication.

The Mahinawa School project reaffirms how matching building methodology to material specification delivers both programme and performance benefits. For Niche Modular, it’s an approach grounded in practice.

“We’re not just building boxes,” Bell said. “We’re building systems that work.”

Partner content

Prefinished linings from ClimateLine support Niche Modular’s education builds

How to Powder Coat MDF

Office furniture ready for powder coating at Climate circa 2004

MDF boards entering the cure oven after powder coating

Point of sale displays powder coated all six sides in a custom red for Target retail chain in Australia

Powder coating MDF – why and how?

If you know powder coatings, you know it is designed for protecting and decorating metals, like aluminium and steel.  Back in the late 90’s the industry started experimenting with powder coating other materials like MDF for furniture and kitchen cabinetry.  While the early days of the technology development didn’t exactly go to plan, the time since has been used to perfect the process.

Why powder coat MDF in the first place? Initially the idea was to offer a more sustainable alternative to solvent based paints and PVC foils for furniture and cabinetry made from MDF. Providing a highly durable, attractive furniture product without the environmental impact. While that’s still true, the limitations of powder on MDF meant the technology didn’t get much of a foothold in the market. Today however, the technology challenges are largely solved and breadth of finishes possible continues to evolve.  Which means powder can play a part in improving the manufacturing industries sustainability footprint by lowering carbon emissions, improving air quality, reducing waste, minimising water use and using materials that can be recycled or re-used.

Powder coating MDF process.  The process relies on low cure powder formulations that melt, flow and cure as fast as possible to minimise edge cracking, dehydration and off-gassing of the MDF.  These powders are available from a range of producers that claim 130c for 3-5 minutes to 140-160c for 5-7 minutes, when cured in an infra-red oven. Powders that cure when exposed to UV light are also available and reduce the cure temperate window to as low as 100c but they require the addition of UV lamps to get the job done.

The electrostatic application of the powder utilises the moisture in the board (ideally 4-8%) to attract the charged powder. Like in metal coating, the substrate needs to be cleanly grounded. The board is lightly pre-heated to around 60c, which helps draw the moisture to the surface and then the powder is applied. Managing film thickness and consistency, particularly on the edges of the MDF, is key to avoid blistering during cure, thick edges and appearance inconsistency. This can be controlled with the use of counter electrodes in the coating booth, positioned opposite the powder applicators, they help prevent a buildup of powder on the edges by drawing excess powder spray away from the part.

The melt, flow and cure the powder is best achieved with infra-red, which is an effective and efficient heating technology.  The right wavelength of IR will ensure optimal absorption by the coating and less by the substrate, minimising the impact of high temperatures on the MDF while maximising cure. Ensuring a consistent and even heat profile of the MDF by placement of the IR heaters and reflection of the IR is also key to consistency.  IR can be electric or gas powered depending on the degree of surface temperature control required, access to natural gas and energy costs.

Climate Surfaces has been coating MDF for 25 years, not without its challenges.  Back in 2004 we pioneered and patented a two-coat process to address some of the shortcomings of the technology. These days the business powder coats MDF panels on a large format horizontal powder coating line. The panels are cut then have an edge tape applied to the edges, just like a joiner or shopfitter would do when working with low pressure melamine panels.  Because powder can be produced in any colour for a small minimum order quantity compared to laminates and the colour doesn’t change over time, has meant we’ve supplied a leading NZ supermarket for over a decade. Always the same colour and quality, no colour deletions.

There is a smattering of powder applicators and OEMs around the world that have purpose built coating lines for kitchen cabinetry, furniture or anything where powder can play a part in finishing MDF.  Each company has carved out a niche for powder, sometimes on other substrates like plywood or plasterboard.  There is still some way to go before powder can rival the incumbent technologies of paint, laminates and foils but it is moving in the right direction in terms of finish options and production formats that can reduce costs.

What’s next for powder coating MDF?  Covestro, a leading resin producer for powder coatings, has developed a process called ImFuse®, which combines a fast curing, low bake powder with a hot press curing technique. This enables smooth and high gloss finishes, as well as designs to be imprinted into the coating, giving it a visible structure that can replicate other materials like wood. Powder is also a great base to digital printing onto with any image or design. The end result can replicate other materials or add unique finishes.

Powder coating technology on non-metallic substrates like MDF will continue to find its way into the market as long as there are companies willing to innovate with a very sustainable coating technology.  The world needs a dry and efficient coating technology to ensure materials look great and last longer with less impact on the planet and people.

Powdercoating a Sustainable Option for Non-metals

Powdercoating provides a sustainable option for those who need a durable finish to their interiors – and it’s no longer limited to metal surfaces. These days it can also be applied to non-metal surfaces such as plywood, MDF and plasterboard.

Large international companies, such as furniture manufacturers IKEA, are now adopting this method in order to reduce the environmental impact associated with the finishing of its furniture. Powdercoating contains no solvents, so it’s essentially a VOC-free coating.

In New Zealand, Climate Surfaces was one of the industry leaders with this method. Managing director Kyle True says it was 11 years ago that the company was involved with the creation of this coating methodology.

To manufacture this advanced finish for non-metals, Climate Surfaces has a specialist plant which uses significantly lower curing temperatures as well as infrared heat instead of convection. It’s a precise formula.

“Powdercoating is a baked-on finish so it provides an inherent durability. It’s also a more efficient way to apply coatings at a lower cost,” Kyle says.

Aesthetically, it provides a wide range of colours and finish effects which work equally well on both metal and non-metal surfaces, even when placed alongside each other.

Climate Surfaces