We added double 2x10 joists to support the seams. An alternative is to use a division board and create 2 decking fields. Make sure you level both joists to the same height and fasten with 4 screws every 12" to support the composite butt joints. Leveling the joists is very important to keep the butt joints at the same height.
Be sure to use 2 clips on the double joist when using a hidden fasting system. To install composite decking with a hidden fastening system, start at the house by face-screwing the first board. Next, screw a hidden fastener clip into the groove on top of each joist. Then, slide the groove of the next board into the clips and tighten with a rubber mallet.
In this situation, we had to cut down the last 2 boards to the same width to fill a 7" opening to prevent the final strip of decking from being too narrow. Notch your composite decking material around rail posts. In this case, we will be using a rail sleeve and base trim that will cover the gaps.
Skip to search Skip to main content. Deck Planning Calculators. Create A Free Account. Article Category:. How to Install Composite Decking. Controlling Deck Seams It is always best to try to avoid seams on your deck surface.
Notice the blocking on the sides to support the border. Leveling the double joists. Grooved decking with hidden fasteners. Line up the seams over double joists. Columbus boards contain a groove routed underneath to accept the Starter Clips. For the T Clip system, follow these steps:. If it turns out you need to cut the last board for it to fit on your deck frame, you can use a plunge router to rout some small grooves so that the clips can still be accommodated.
If using T Clips, you must install the last row before installing the second-to-last row. Now, you can install your starter clips measuring off of this line and then push the final row onto the starter clips.
Then, put the second row in place and slide the T Clip in from the end. Finally, slide the clips into place and attach them. If you are installing with the Mini Gap fasteners, the final board will need to be fastened with composite deck screws because the Mini Gap clips cannot be slid into place. To use as few screws as possible, you may put the Starter Clips as usual and then slide the last board into place from the side.
To give your deck a polished look, you should install fascia boards on the sides. Hollow boards will also need end caps for protection. If you want to give your deck a streamlined, smooth look, fascia boards are a great idea. Of course, to achieve the most aesthetically pleasing and seamless look, you should purchase a fascia made of the same material as your decking.
Our composite railing is great for your deck for many reasons:. This kit will fix small scratches, chips, gouges, nail holes, splits and damaged edges in both capped composite and natural timber. As you know, our decking boards feature degree capping, which completely protects them from decay, moisture and environmental hazards. However, the cut areas at the end will still be vulnerable, so composite decking edge finishing is helpful. If moisture penetrates deep into the end cut area, this could lead to cracking, swelling and cupping around the edge.
End caps by NewTechWood are made out of TPO plastic, a durable material that can withstand extreme weather conditions and temperatures down to degrees Celsius. Since our founding in , we have been developing cutting-edge wood plastic composite products that make your outdoor living experience easier and more enjoyable.
We attribute our success to listening to our homebuilders, architects, contractors and homeowners and realizing their visions. NewTechWood is internationally renowned for its innovative, attractive and dependable wood-plastic composite materials. We are committed to providing our customers with unrivaled performance and complete satisfaction.
Feel free to contact with questions at or via our online contact form. Full length installation video:. You can easily wipe off all spills because liquids are never absorbed, making cleaning and maintenance very easy. The shield is uniquely formulated so that colors are retained for much longer than those on regular composite decking. Our rigorous testing procedures have demonstrated that color changes are minimal over long periods.
It is growing in the water, not on the surface of the board. This layer gives UltraShield a much longer lifespan than normal uncapped composites. Oiling or Painting. Joists refer to the pieces of timber that provide support for your decking. For residential decks, the spacing should be 16 inches 40 centimeters , and for stair treads and commercial decks, this spacing should be 12 inches 30 centimeters.
For installing at an angle, refer to the chart. If you are going to install the decking at an angle to the joists, refer to the spacing chart, which is available in the installation instructions as well as on our website. Ensure the joists are strong.
If you are remodeling or the deck is old, it is important that all the joists are structurally sound before installing the NewTechWood deck boards. The joists must be sufficiently wide. Every joist must be a minimum of 1.
This means that for butt joists, a sister joist will have to be installed. If you are going to use a breaker board on your deck, you will need to install a ladder joist. Before installing the deck, set the boards outside in a nearby location so that they can acclimate. The boards should be laid straight and on a flat surface. Do not set the boards on dirt or grass because these surfaces may move over time. Follow local codes. During the composite and structural frame installation, always follow all local building regulations and zoning laws.
These decking instructions are not meant to take the place of a professional. You assume all liability and risks related to the construction and usage of the product. Your substructure must also comply with local codes. The joists and other supporting components of your deck must also meet local regulations. Make sure your deck follows their rules. Call utility companies in the area to find out if there are any underground cables, wires or pipes. Builders are often helpful with this information.
Stay safe. As is the case with any construction project, you must use the proper safety equipment and protection to minimize the risk of injuring yourself. However, consumers may feel the need to wear additional protection in some situations. Use sharp saw blades with carbide tips. This will make sure your cuts are clean and let you get the most of your deck. Use a water-based sealant. This is recommended for when you seal cuts and routed areas. Chalk lines should be white.
Make sure the color of your chalk line is white, as any other color may lead to permanent stains. Test the screws. The screws you use should be specifically made for composite decking. If the screws do end up mushrooming, you should switch to another brand. When searching for the right screws, go to your local hardware store or home center and ask if they sell screws specifically designed for composite wood.
Composite screws are guaranteed to work and will give you the best-looking results when installing NewTechWood products. Install all screws properly. Never toe-screw in the product. If you cannot drive in a screw at a degree angle into the board, you should add an additional joist. Flatten your deck joists. You can do this by stretching chalk lines over the joists, finding the high spots and planing them down with a power hand planer.
This decking product is not meant to be used as beams, columns, support posts, joist stringers or serve any other supporting function. Do not install over other decking boards. NewTechWood products work well with retrofits, but under no circumstances should they be installed on top of an existing decking material. There must be air flow under the decking.
You must install the decking product on top of a substructure that consists of a frame to ensure there is proper airflow underneath, as this will prevent the absorption of too much water. If an excessive amount of water is absorbed in an area that is not protected by a cap layer, this could lead to swelling. There must be at least four inches of free area underneath the surface of the decking so that air circulation can occur and promote drying and drainage.
Dig holes for the caissons using a posthole digger. Then, pour concrete in the holes and, using a float, smooth it over. Wait 24 hours so that the concrete can cure. Install a ledger board and beams. Using a level, attach a ledger board to the house, which will serve to secure your deck to the wall of your house. A center beam should then be attached to the post hangers. Finally, attach an end beam. Attach joist hangers. Every six inches along the end beam and ledger board, put in joist hangers.
Using the framing lumber, create a joist jig to make sure there is consistency in your hangers. Your joists should be marked and cut so that they run from the end beams to the ledger board.
Place the joists in the hangers and secure them with nails.
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