Using pine beams or gum poles is the simplest option when it comes to the support structure of your deck. “I prefer wood as it can even outlast steel with the correct treatment,” says Gareth.
Rika blocks are an alternative foundation on which to construct your deck. These concrete blocks are placed 1.5m apart, at most, and have prefabricated slots into which the support structure fits. They can also be used on sloped surfaces, as long as each block is level with the ground. Adjust the height of your posts accordingly and insert in the blocks.
If you live in a coastal area, make sure to use galvanised screws, nuts and washers to avoid rusting. You can also use body filler that’s stained to the same colour as the decking material if you don’t want the screw holes to be visible; otherwise, use a specialised hidden fastener deck jig (inset) which attaches the screws on the side of each piece of timber instead of on the surface.