Coatings & Finishing

Coating Process

Pre-coating Deckings, Claddings, Linings and Screenings in a factory environment is an infinitely superior process to any form of application on-site. M&B has recently installed a Vacuum Coating Machine and Drier and is proud to offer a remarkable addition to their service offering. Vacuum coating provides for a 100% coverage over the entire surface area and is especially suited to profiles with complex detailing. M&B is able to coat any profile up to 200mm (width) x 100mm (thickness).

Vacuum coating is the process whereby coatings are applied to Decking, Cladding, Lining and Screening boards through a combination of vacuum and pressure. The coating is pumped from the coating reservoir through a fluid strainer into the application chamber. The board is then fed through an entry template (that perfectly matches the profile) into the application chamber and out via an identical exit template. A vacuum pump pressurizes the system, the negative pressure pulls air into the application chamber through the entry and exit templates, causing the coating material to be brought into contact with the board. Excess coating is removed and pulled back into the baffle tower, where the air and coating are separated, the coating returning to the reservoir for recycling. Regulating the vacuum pressure can alter the coating thickness – the greater the negative pressure inside the system, the less coating is supplied.

Considered the most efficient and economical for film coatings, vacuum coating is also safer to the operator as it is a completely enclosed process. Coatings are water based oils and paints and generally solvent free which not only improves the working environment but also avoids the emission of VOCs.

Additional benefits to pre-coating timber in a factory environment is that it saves time, both in application and drying and as a result reduces on-site labour costs. (Please note: M&B will prime and apply the first coat, the final coat will need to be applied on-site). M&B offers a range of coatings including Intergrain, Woca and Feast & Watson in a variety of different colours. We are able to coat any profile with any product so long as it is water based. The boards are also coated in a sealer to help preserve the timber and maintain the appearance.

In addition to the vacuum coating machine M&B has also invested in a scorching/charring machine that can produce the centuries old Japanese technique of “Shou-Sugi-Ban” – charring planks – for use in residential cladding and lining projects (Please Note: M&B only recommends scorching on non-trafficable surfaces). Common in Japan since before the 1700s, the technique fell out of favor due to the advent of modern plastic or cement based products and a short supply of wood, though it was “rediscovered” in the early 2000′s and quickly gained the attention of architects and designers worldwide.

The Shou-sugi-ban can look like a dark stain or have a surface texture similar to alligator skin. Its popularity is also due to the fact that wood treated with fire is fire resistant and extremely durable due to its low reactivity. Timber that has been scorched can be passed through our vacuum coater for a final protective coating i.e. clear primer, natural or colour finish. Scorching greatly lessens the effects of coatings fading, thereby reducing the period between maintenance work or the need to re-coat.

Features
  • Variety of colours and finishes
  • Time saving and thus reduces costs
  • Factory applied, thus consistent and even coating
  • Vacuum coating provides for a 100% coverage over the entire surface area
Applications
  • M&B is able to coat any timber profile up to 200mm (width) x 100mm (thickness), ideal for Decking, Cladding, Lining and Screening.
Benefits
  • Coating is applied to 100% of the surface area of any profile
  • Coating is applied to complete surface area in one pass
  • Factory applied coatings are superior to on-site coatings
  • Reduced lead time as substrate is coated and dried in one pass
  • No wastage of coating material
  • Reliability and defined timing
  • Reduced on-site costs*
  • Completely enclosed process, which minimizes the operators exposure to the coating material
  • Dust free