Unlike steel, aluminium doesn’t rust. When steel is cut, rust begins to form instantly; if left unchecked, rust will spread and become flakey, and ultimately the steel object will fail. Not so with aluminium. When aluminium is cut, the exposed surface reacts with the oxygen in the air to form an extremely thin layer of oxide. This oxidised layer then serves to protect the base material underneath and improves the aluminium’s resistance to corrosion in harsh environments. This naturally- occurring layer is self-repairing if damaged.
Do you sell your systems with a standard powder coat finish?bgalway2019-03-20T00:47:27+10:00
Knotwood decking is available with a Non-Slip powder coat rated at grade P4 under Australian standard 4586:2013 making it suitable for all outdoor areas, around swimming pools and wet areas. Since this is the same material as the cladding and soffits, please specify your application when ordering.
When does the finish need to be refinished?bgalway2016-09-15T03:03:08+10:00
Yes, in direct sunlight the decking will be warm. Aluminium dissipates heat faster than any other material and tests have show Knotwood aluminium decking to slightly cooler than traditional wood, composites and ipe.
The process involves the physical reaction between special inks and a polyurethane or polyester powder coating. Under controlled conditions of heat and pressure, photographic images are absorbed directly into the powder coating.
See making Knotwood under resources / knotwood / making knotwood.
Can I do it myself?bgalway2016-09-15T02:58:31+10:00
Because galvanic corrosion happens when dissimilar metals come into contact with each other we prefer using a hardened self tapping aluminium (aluminum) screws these are recommended for for coastal conditions. If you are not exposed to constant salt air you can also use self tapping galvanized steel screws.