One hidden fastener should be inserted at each joist and used at board ends. Ensure that screw holes are lined up with the centre of the joist and one fastener is used per board at butt joints. To fix adjacent boards, place the hidden secure fasteners into the grooved edge of the board you just fixed in place and secure screw into the hidden fasteners. The first board must be fixed with a hidden starter fastener through the side groove of the boards: align the starter fasteners along the first joist, securely screw each fastener to the joist then simply clip the first decking board to the starter fasteners.Use joist hangers to hold joists to cross beams to strengthen the deck and reduce the number of posts required.At butt joints, the deck boards ends do not share a single joist.A 10mm gap is left where the joist end meets a cross beam when using plastic lumber.Bolt holes are oversized by 3mm to allow for expansion when using plastic lumber.Each bearer or joist is supported in a minimum of 3 places.Attach the joist frame using good quality galvanised mushroom capped bolts which penetrate both the bearer and the upright post.Cement your posts at a minimum of 500mm (or 1/3 of the total post height) into the ground.Foundations are higher than surrounding areas to avoid ponding.Composite decking is installed at a minimum of 300mm of the ground.A drainage slop of 4mm per meter is incorporated.Any top turf layer is removed, and scree or gravel is laid to aid drainage.On soft ground, post supports are recommended to support your deck. The length of the hole must at least be the same length as the screw. Prior to screwing into composite products, we also recommend that the correct sized pilot holes are pre-drilled. To find out how much decking you should order, use our calculator or contact our team who’ll be happy to help. If you are planning to diagonally lay your decking, you will likely generate more scrap from cutting in that case, it is recommended that you add 15% extra material. It is unlikely you will use the board lengths perfectly on your balcony. When calculating the number of decking boards and accessories you’ll need, it is recommended that you add approximately 5% to the total material required for a wastage factor.
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