How to Support Decking on Grass: A Step-by-Step Guide

Alexis Jul 25, 2026
a wooden deck with pillows on it in the middle of some grass and flowers around
a wooden deck with pillows on it in the middle of some grass and flowers around

When it comes to creating a beautiful outdoor space, one of the most critical elements is a well-designed decking area. However, many homeowners struggle with supporting their decking on grass, which can lead to uneven surfaces, damage to the lawn, and even safety hazards. In this article, we will explore the best practices for supporting decking on grass, ensuring a stable and safe outdoor space for years to come.

a wooden deck with pillows on it in the middle of some grass and flowers around
a wooden deck with pillows on it in the middle of some grass and flowers around

Before we dive into the details, it's essential to understand the importance of proper support for decking on grass. Without adequate support, the weight of the decking can cause the grass to become compacted, leading to a range of problems, including soil erosion, uneven surfaces, and even the growth of weeds. Moreover, failing to provide adequate support can compromise the structural integrity of the decking itself, making it prone to damage and potentially even collapse.

Can You Lay Grass on Concrete or Decking?
Can You Lay Grass on Concrete or Decking?

Choosing the Right Decking Support System

The first step in supporting decking on grass is to choose the right system. There are several options available, each with its own set of benefits and drawbacks. Some popular options include concrete piers, deck blocks, and adjustable footings. Each of these options has its own advantages and disadvantages, and the choice ultimately depends on the specific needs of your project.

Installing a basic raised frame decking, with reclaimed scaffold boards over a sloped lawn.
Installing a basic raised frame decking, with reclaimed scaffold boards over a sloped lawn.

Concrete piers, for example, are a popular choice for decking support. They provide a sturdy base for the decking, helping to distribute the weight evenly across the lawn. However, they can be expensive and may require specialized installation. On the other hand, deck blocks are a more affordable option that can be easily installed by a DIY homeowner. However, they may not provide the same level of stability as concrete piers.

Concrete Piers vs. Deck Blocks

Decking help - frame plan check & advice on posts / heig
Decking help - frame plan check & advice on posts / heig

When it comes to choosing between concrete piers and deck blocks, there are several factors to consider. Concrete piers offer a more stable base for the decking, reducing the risk of uneven surfaces and damage to the lawn. However, they can be more expensive and may require specialized installation. Deck blocks, on the other hand, are a more affordable option that can be easily installed by a DIY homeowner. However, they may not provide the same level of stability as concrete piers.

Ultimately, the choice between concrete piers and deck blocks depends on the specific needs of your project. If you're looking for a more stable base for your decking, concrete piers may be the better option. However, if you're on a budget and want a more affordable solution, deck blocks can be a good choice.

Adjustable Footings for Uneven Ground

How to Lay Decking on Uneven Ground
How to Lay Decking on Uneven Ground

Another important consideration when supporting decking on grass is the need for adjustable footings. Uneven ground can cause the decking to become unstable, leading to a range of problems, including uneven surfaces and damage to the lawn. Adjustable footings can help to level out the decking, ensuring a stable and safe outdoor space.

When choosing adjustable footings, it's essential to consider the specific needs of your project. Some popular options include adjustable deck screws, deck levelers, and adjustable footings. Each of these options has its own set of benefits and drawbacks, and the choice ultimately depends on the specific needs of your project.

Installing the Decking Support System

Home - Bunnings Workshop community
Home - Bunnings Workshop community

Once you've chosen the right decking support system, the next step is to install it. This can be a complex process, requiring specialized tools and expertise. However, with the right guidance, you can ensure a safe and stable outdoor space for years to come.

When installing the decking support system, it's essential to follow the manufacturer's instructions carefully. This will help to ensure a safe and stable installation that meets the specific needs of your project. Additionally, it's a good idea to consult with a professional if you're unsure about any aspect of the installation process.

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How to lay decking, laying decking, Garden Decking, Decking Kits, ProDeckUK

Ensuring a Stable and Safe Outdoor Space

Finally, it's essential to ensure that your decking support system provides a stable and safe outdoor space. This can be achieved by following a range of best practices, including ensuring that the decking is level, providing adequate support for the weight of the decking, and using high-quality materials that can withstand the elements.

By following these best practices, you can create a beautiful and functional outdoor space that will provide years of enjoyment for you and your family. Whether you're looking to create a relaxing space for outdoor entertaining or a functional area for gardening and outdoor activities, a well-designed decking support system is essential for achieving your goals.

With the right decking support system in place, you can create a safe and stable outdoor space that will provide years of enjoyment for you and your family. Whether you're looking to create a relaxing space for outdoor entertaining or a functional area for gardening and outdoor activities, a well-designed decking support system is essential for achieving your goals. By following the best practices outlined in this article, you can ensure a successful and enjoyable outdoor space that will become a beloved part of your home.