• Moisture damage: Even in yards with excellent drainage systems in place, water and moisture can collect in your soil, particularly in snowy or rainy conditions. Ground moisture from direct contact with grass can damage your composite deck tiles over time.
• Mold growth: When you lay decking tiles directly on the dirt, you eliminate airflow. Lack of proper airflow can lead to mold or bacterial growth on your composite tiles.
• Unstable ground: Think about the last time you walked across your yard — did the grass move under your shoes? Was the dirt soft and flexible? Shifting, unstable ground can move your deck over time, which can lead to costly repairs or replacements.

Can You Lay Composite Decking on Grass?

Just as it is with deck tiles, you cannot lay composite decking directly on grass. You will face the same issues, including potential for mold growth and ground movement. Instead, place your NewTechWood UltraShield® Naturale™ on solid surfaces, such as:

• Concrete sidewalks or other paved areas
• A pre-existing patio
• On top of compact sand or ground-up gravel

How to Create an Acceptable Area for Deck Tiles?

Should you put deck tiles on grass? The short answer is no. However, just because you shouldn’t put deck tiles on grass, doesn’t mean you’re without options. If you want to know how to lay decking tiles on grass, the solution is to first properly prepare the section of your yard you wish to lay your composite decking on. To create an acceptable area for deck tiles, follow these tips:

• Avoid excessively wet areas: As you choose the part of your yard on which you want to install composite decking, make sure you avoid overly wet areas, including deep depressions or places where standing water frequently gathers.
• Watch out for tree roots: Although the exact distance varies depending on the type of tree, most established root systems extend several feet beyond the tree trunk. When placing your new deck, keep this in mind. Avoid laying your deck over a known root system, as this can damage your tree and may cause problems with your deck in the future.
• Level the ground: Before you place your composite decking, you need to level the ground. If the area is small enough, you can do this by hand using a shovel, hoe and rake. For larger surface areas, you may need to use a tiller or heavy equipment.
• Establish a firm base: Grass and dirt are unstable and can shift over time. To prevent this, you need to create a firm base on top of your newly leveled ground. Construct your base out of poured concrete, tightly compacted sand or grounded gravel. This base will act as a supportive, protective layer between your tiles and the ground beneath.
• Ensure adequate airflow: Proper airflow beneath your composite deck tiles is crucial. If you are using NewTechWood composite decking, we recommend you leave a 250 to 300-millimeter clearance between your decking and the grass or dirt. For concrete or pavement, a 40 to 50-millimeter clearance is adequate.