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Contact us on 01473 598852 & for Mobile & Whatsapp 07871 425550
wooden decking UK Building Supplies

How to Install Wooden Decking: A Step-by-Step Guide

How to Install Wooden Decking: A Step-by-Step Guide

Wooden decking can transform your outdoor space, providing a beautiful area for relaxation and entertainment. Installing a wooden deck might seem daunting, but with the right tools and a bit of know-how, you can achieve professional results. This comprehensive guide will walk you through the process of installing wooden decking, from planning to the final touches. Plus, we'll explain why you should purchase all your decking materials from us at UK Building Supplies.

Step 1: Planning and Preparation

1.1. Design Your Deck

Start by planning your deck. Consider the size, shape, and location. Ensure your design complies with local building codes and regulations. Sketch your design and make a list of materials needed.

1.2. Obtain Permits

Check with your local council to see if you need any permits for your deck. It's important to comply with local regulations to avoid future issues.

1.3. Gather Materials and Tools

For the best quality materials, purchase from UK Building Supplies. We offer:

  • Pressure-treated wood for the frame
  • Decking boards (hardwood, softwood, or composite)
  • Concrete mix
  • Joist hangers
  • Decking screws and nails
  • Post anchors

You’ll also need:

  • Spirit level
  • Tape measure
  • Circular saw
  • Power drill
  • Hammer

Step 2: Preparing the Site

2.1. Clear the Area

Remove any grass, plants, and debris from the area where the deck will be installed. Ensure the ground is level.

2.2. Mark the Layout

Use stakes and string to mark the outline of your deck. Measure diagonals to ensure the layout is square.

2.3. Install the Ledger Board

The ledger board attaches the deck to your house. Ensure it's level and securely fastened with lag screws. Use a spirit level to confirm accuracy.

Step 3: Building the Foundation

3.1. Set the Posts

Dig holes for the deck posts (at least 60 cm deep) and fill the bottom with gravel for drainage. Place the posts in the holes, ensuring they are vertical and evenly spaced. Pour concrete around the posts and let it set.

3.2. Install the Beam

Once the posts are set, attach a beam across them using post anchors and bolts. The beam provides support for the joists.

Step 4: Installing the Frame

4.1. Attach Joist Hangers

Attach joist hangers to the ledger board and beam, spaced according to your deck design (usually every 40-60 cm).

4.2. Install the Joists

Cut the joists to length and set them in the joist hangers. Secure them with screws or nails. Ensure all joists are level.

4.3. Add Blocking

Install blocking (short pieces of wood) between joists to add stability and prevent the joists from twisting.

Step 5: Laying the Decking Boards

5.1. Choose Your Decking Pattern

Decide on the pattern for laying your decking boards. The most common is a parallel pattern, but diagonal and herringbone patterns are also popular.

5.2. Start Laying Boards

Begin at the house and lay the first board along the edge. Use spacers to ensure consistent gaps between boards for drainage. Secure each board with two screws at each joist intersection.

5.3. Trim the Boards

Once all boards are laid, trim the edges to ensure they are even using a circular saw.

Step 6: Finishing Touches

6.1. Sand the Deck

Lightly sand the deck to smooth out any rough edges and splinters. This step is particularly important if you used hardwood.

6.2. Apply a Finish

Apply a protective finish, such as a sealant, stain, or paint, to protect the wood from the elements and enhance its appearance. Follow the manufacturer’s instructions for the best results.

6.3. Install Railings

If your design includes railings, install them now. Ensure they are securely fastened and comply with local safety regulations.

6.4. Add Skirting

Add skirting around the base of your deck to conceal the frame and give it a finished look. This also helps prevent pests from nesting underneath.

Step 7: Maintenance

Regular maintenance will extend the life of your deck. Clean it periodically to remove dirt and debris, and reapply the finish as needed to keep the wood protected.

Why Buy from UK Building Supplies?

Quality Assurance

Here at UK Building Supplies we offer high-quality materials that are durable and long-lasting, ensuring your deck stands the test of time.

Wide Range of Products

From pressure-treated wood to composite decking, you'll find everything you need in one place.

Competitive Pricing

Get the best value for your money with competitive prices on all decking materials.

Expert Advice

Our knowledgeable staff can provide expert advice and support throughout your project, ensuring you choose the right materials and techniques.

Convenient Delivery

Enjoy hassle-free delivery right to your doorstep, saving you time and effort.

By choosing UK Building Supplies, you're investing in quality materials and excellent customer service, ensuring your decking project is a success.


Installing wooden decking is a rewarding project that enhances the beauty and functionality of your outdoor space. By following these steps and sourcing your materials from us at UK Building Supplies, you can build a durable and attractive deck that you will enjoy for years to come. Happy building!

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