We recommend using the special Durafix stainless steel screws with our Millboard planks to maximise and guarantee the lifespan of terraces. There is no need to pre-drill or countersink Millboard because when the special screws are driven in, the innovative Lastane coating on the board flexes back over the screw heads, completely hiding them. To fix Plas-Pro posts and beams to each other, we recommend using the special coated hex-head screws. You can find more information on our page on Joists and Edge finishing.