Decking Material Calculator

Joists
This calculator works out the joists at 500mm centres and nails are added pick 47 x 100 or 47 x 150. Both will do the job, but 47 x 150 is recommended if you are raising the deck from ground level. If you want the decking raised pick the height from the drop down box, this height is from ground to top of the deck. Lengths of posts, postmix and fixings are added.

Decking
The decking is supplied in the lengths that suit your job, these are calculated as covering 150mm (145mm for the board and 5mm gap for expansion and contraction). Any decks over the 5.4m long that are required are given in 4.8m lengths so there is as little joins as possible. All screws are supplied.

Handrails
Handrails are calculated with the newel posts at 2m centres. You will need to add one newel posts for every time there is a gap in your total length. Spindle are calculated with 100mm gap.