Nordeck Decking

A 100mm thick concrete base is recommended, with a slight slope for drainage to occur. The optimum slope should be around 5mm for every metre.

Remove the turf or soil until the ground is completely even, ensuring to remove any debris or rocks from the area. Cover the area of your site with a layer of Weed Mat to prevent any weed re-growth coming up under your Decking.


If you need to overlap the Weed Mat, ensure you do this with enough fabric to prevent any gaps. Once cut and pinned into place, cover the Weed Mat with your desired coverage, such as chippings, bark or stones, so that none of the Weed Mat material is exposed.

Prepare a level, weed-free area for the deck. To create a framework, cut the joists (using either a 47mm x 100mm or 47mm x 150mm) to the required length, then join using exterior wood screws. Check the frame is square, by measuring diagonally from corner to corner.


If installing on grass or soil, use a weed mat to ensure weeds do not grow through from the base of the Decking frame.

To raise the frame, cut four blocks of 100 x 100 treated timber, to the desired height. Screw these to the inside of the frame, at each corner, ensuring they are flush with the top. These legs will be taking all the weight for now, so ensure they are properly supported using blocks and secured to the frame.

If your deck will be sitting on grass or soil, you will need to place blocks or slabs underneath each leg, to spread the load and provide a level, stable base. Additional blocks can be used if required. Position and adjust the blocks/slabs, ensuring the frame is at a slight angle, that will allow the water to drain down the length. We recommend a slope of at least 5mm for every metre. Alternatively, if using slabs, you could dig a hole and set the legs in concrete.

Mark across one side of the frame every 300mm, this will set your joists at the recommended required 300mm centres, then repeat the process on the opposite side of the frame. You may wish to set your joists at smaller than 300mm centres, to ensure even spacing of the joists across the frame. Remember you will need to have a double joist in areas, where the ends of two Boards meet.

Measure across the inside of the frame at your joist marks, then cut lengths of (47mm x 100mm) or 47mm x 150mm) timber to suit. To fix the joists, tap them in with a hammer until flush with the top, ensuring they do not push the frame out of shape. Then screw them in place from the outside of the frame. Apply Deck Tape to the top surface and cut ends of joists to protect them from moisture.

Support the joists with additional 100mmm x 100mm legs, spaced at 1m maximum intervals. Follow the same method as shown in steps 2 and 3 for these legs, ensuring each is supported by a suitable block, slab or concreted into the surface below. Use additional supporting legs for the outer frame ensuring the whole area is supported.

Start by laying out your Decking Boards onto the desired area before fixing them in place. Ensure there is a 3mm gap between any Boards at butt ends or side by side and between all walls and fences.

Check all Boards fit, and you are happy with the layout. Cut Boards must always be positioned over and fastened to a supporting joist. Each Board will cover an area of 0.72m2.

Secure one end of the Board into the structural base below using Cladco Hidden Deck Fasteners with the supplied drill bit and Plugs. Screws should be inserted 13mm away from the edges of the Board. Apply pressure using the supplied drill bit to compress the orange pad onto the surface of the Board to create space for the Plug. The supplied Plug can then be inserted to create a flush, hidden finish over the Screw head to conceal it.

Cladco Hidden Deck Fasteners consisting of 65mm Screws, a drill bit and colour Plugs, can be used to secure Nordeck Bullnose Boards to Joists. Ensure Screws are fixed along the entire length of the Board, with a Screw inserted into each Joist. Apply pressure using the supplied drill bit to compress the orange pad onto the surface of the Board to create space for the Plug. The supplied Plug can then be inserted using a rubber mallet to create a flush, hidden finish over the head.

Two rows of Screws are recommended for each Board, inserted 13mm from the edges. We recommend using 26 Screws per 3.6m Board.

Alternatively, 65mm SPEEDDEKZ Deck Screws can be used through the Boards. Please note that the head of this type of Screw will be visible.

Using 50mm SPEEDDEKZ Deck Screws, fix the ends of your Fascia Boards to the Joists behind.

Ensure the Screws are inserted 13mm from the edge of the Board. Continue fixings 300mm, after the first Screw. Alternatively, you can use a strong adhesive (such as CT1) to secure the Boards. For optimum results, alternate between Screws and adhesive every 150mm until the Board is fastened securely.

Take care when walking over your Nordeck Decking in adverse weather conditions, such as snow or ice, as the Decking may become slippery.

If using de-icer, ensure that the product contains calcium chloride, as this will not damage the Decking. This may leave a slight residue behind, but this can be easily cleaned away. Always check before using any chemicals on the Decking.

Do not use grit, sand or metal/plastic spades on your Decking as they may scratch the surface.

Cladco Nordeck Woodgrain Effect Decking has a 20-year guarantee and is stain, scratch and fade resistant. In some cases, pressure washing may be required for long term dirt.

For standard everyday debris such as, plants, leaves, berries, animal droppings etc. Simply brush your deck free of any debris.

Discolouration can be caused by chemicals found in everyday household products, such as suntan lotion, or insect repellent, take care when using these products near your Nordeck Deck.