How to Lay Decking

Transform your outdoor space into a stunning, functional area with a beautiful new deck! Whether envisioning a relaxing lounge area, an entertainment space, or a simple walkway, laying your decking can be a rewarding DIY project. 

At Build & Plumb, we provide all the quality building materials and supplies you need. This comprehensive guide will walk you through how to lay decking, covering everything from planning and preparation to construction and finishing touches. We’ll even tackle specific situations like how to lay decking on soil and how to lay composite decking.

Planning Your Decking Project

When planning your decking project, start by determining its size and shape, considering available space, intended use, sunlight, shade, and access points. Next, choose the right decking material that fits your needs and budget, weighing the pros and cons of softwood, hardwood, and composite decking options in terms of cost, durability, and maintenance. 

Decide on the overall design and style, including railings, fencing, steps, and built-in seating. Finally, check if you need planning permission, especially for decks raised significantly above ground level. Careful planning ensures your deck is functional and compliant with local regulations.

How to Build a Decking Frame

A solid foundation is crucial for a stable and long-lasting deck. Here’s how to build a decking frame:

1. Prepare the Ground: First, clear the area of vegetation and debris. Then, level the ground and add a layer of weed control fabric, such as a weed membrane—found in our artificial grass section—to prevent weed growth.
2. Install Support Posts: Dig holes for your support posts, ensuring they are deep enough to provide frost protection. Set the posts in concrete, making sure they are level and plumb.
3. Attach the Ledger Board (if applicable): If you are attaching the deck to your house, securely fasten a ledger board to the house’s wall.
4. Construct the Frame: Build the frame using pressure-treated timber panels. Ensure it is level, square, and well-supported. Securely attach the joists to the frame using the builder’s metalwork joist hangers.
5. Add Noggins: To provide additional support and prevent twisting, add noggins (small timber pieces) between the joists.

How to Lay Decking On Soil

Laying decking directly on soil requires extra preparation to prevent moisture damage and ensure stability. Here’s how to lay decking on soil:

1. Excavate and Level: Excavate the area to a depth of at least 150mm. Level the ground and compact it thoroughly.
2. Lay a Sub-Base: Add a compacted hardcore or gravel layer to create a solid sub-base.
3. Weed Control Fabric: Cover the sub-base with weed control fabric to prevent the growth of weeds.
4. Concrete Pads: Install concrete pads or paving slabs at regular intervals to support the decking frame.
5. Build the Frame: Construct the decking frame as outlined in the section above, ensuring it is properly supported by the concrete pads.

How To Lay Composite Decking

Composite decking is a popular choice due to its durability and low maintenance. Here’s how to lay composite decking:

• Follow the Manufacturer’s Instructions: Always adhere to the manufacturer’s guidelines for installing composite decking, as installation methods may differ.
• Install Starter Clips: Place starter clips around the perimeter of the frame to provide a secure attachment point for the first row of decking boards. We stock a range of grooved and universal decking clips from industry-leading Trex.
• Attach Decking Boards: Secure the decking boards to the frame using hidden fasteners or screws, making sure to maintain proper spacing between the boards.
• Cut and Finish: Use a saw with a fine-toothed blade to cut the decking boards to the required size. Finish the edges with trim or fascia boards for a polished look.

Finishing Touches

Once the decking is laid, you can add the finishing touches

• Install Railings: Secure railings or surrounding fences for safety and to enhance the overall aesthetics.
• Add Steps: Incorporate steps for easy deck access.
• Apply Decking Oil or Stain (for wood decks): Protect and enhance the appearance of wooden decks by applying wooden decking oil or stain.
• Add Furniture and Accessories: Furnish the area with garden furniture, planters, and other accessories to create a comfortable and inviting outdoor space.

Building DIY decking can be challenging yet rewarding. By following these steps and using quality building supplies and materials from Build & Plumb, you can create a beautiful and functional outdoor space and landscape that you will enjoy for years to come. Explore our extensive decking materials, tools, and accessories online today, and start planning your dream deck!Shop for decking materials at Build & Plumb today or contact our expert team for advice.