How to Build a Multi-level Deck: A Complete Guide

A multi-level deck can transform your outdoor space into something truly spectacular. Whether it’s for entertaining, relaxing, or simply making the most of an uneven garden, a multi-level deck offers both functionality and style. Building one may seem daunting, but with the right approach, it’s a project you can tackle step by step. Here’s how to create a stunning multi-level deck that’s perfect for your home.

Planning Your Multi-Level Deck

Every great project starts with a solid plan, and a multi-level deck is no exception. Taking the time to think through your design will save you headaches later and ensure the finished deck meets your needs.

Assess Your Space

The first step is to evaluate your outdoor area. Is your garden sloped, or do you have an awkward layout to work around? Multi-level decks are ideal for uneven spaces as they create functional zones without the need for major landscaping. Measure the area carefully and sketch out the possible layout, keeping in mind how each level will flow into the next.

Determine the Deck’s Purpose

Think about how you’ll use the deck. Is it for dining, lounging, or maybe a hot tub? Each purpose may require different considerations. For example, a dining area might need enough space for a large table and chairs, while a lounging zone could benefit from built-in seating or planters. Defining the purpose of each level helps guide the design process and ensures every part of the deck serves a purpose.

Materials and Tools You Will Need

Choosing Decking Material

One of the most important decisions you’ll make is the type of decking material to use. While timber may be traditional, composite decking is the smarter choice for modern builds. It’s weather-resistant, easy to maintain, and lasts longer without warping or rotting. Plus, it comes in a variety of colours and finishes to suit any design aesthetic – explore composite decking boards for outdoor spaces over on our website – and don’t forget, free samples are often offered so you can check the quality for yourself.

Essential Tools

You’ll need the following tools to get started:

• Measuring tape
• Spirit level
• Circular saw or mitre saw
• Power drill
• Decking screws or fasteners
• Post hole digger (if required for your foundation)

Step 1 – Build the Foundation

A sturdy foundation is the key to a durable and safe multi-level deck.

Prepare the Ground

Start by clearing the area of any debris or vegetation. Mark out the dimensions of your deck and dig holes for the footings at each corner of the planned structure. If your garden is sloped, you’ll need to level the ground or use adjustable posts to accommodate the incline.

Install Deck Footings

Place concrete footings or ground screws into the prepared holes. These provide the stability needed to support the frame, especially for multiple levels. Double-check that each footing is level before moving on to the framing stage.

Step 2 – Frame the Deck Structure

The frame is the backbone of your deck, so it’s worth taking the time to get it right.

Build the First Level’s Frame

Construct the base frame for the first level using pressure-treated timber or composite materials for added durability. Secure it to the footings with galvanised brackets to prevent movement.

Install Support Posts for Multiple Levels

For higher levels, install vertical support posts that extend from the lower level’s frame. Make sure these are securely anchored and evenly spaced to ensure stability for the upper sections.

Add Joists and Beams

Lay joists across the frame, securing them with brackets or screws. Joists should be spaced evenly to provide consistent support for the decking boards above.

Step 3 – Install the Decking

Now comes the exciting part—adding the decking boards.

Lay Decking Boards

Start at one edge of the frame and work your way across, laying composite decking boards with a slight gap between each for drainage. Composite boards are a fantastic choice as they’re splinter-free and easy to clean, making them perfect for outdoor living spaces.

Cutting and Fitting the Boards

Trim boards to fit as needed using a circular saw, ensuring clean edges for a polished look. Use hidden fasteners or deck screws to secure each board in place.

Step 4 – Add Stairs and Railings

Connecting the levels of your deck with stairs and railings ensures safety and functionality.

Building Stairs for Multi-Level Decks

Measure and cut stringers for the stairs, attaching them to the lower and upper levels of the deck. Add treads using the same composite boards for a seamless look.

Install Railings for Safety

Railings not only add a finishing touch but are also essential for safety. Attach posts to the deck’s edges and secure the railing panels, ensuring everything is level and sturdy.

Step 5 – Finish the Deck

With the structure complete, it’s time to add the finishing touches.

Sanding and Sealing

If you’ve used any timber, lightly sand rough edges and apply a sealant to protect it from the elements. Composite boards won’t require this step, which is another reason they’re such a low-maintenance option.

Final Touches

Accessorise your deck with outdoor furniture, potted plants, or lighting to create a welcoming space. Adding rugs or cushions can also enhance comfort and style.

Best Practices & Expert Tips for Building a Multi-Level Deck

Plan for Future Maintenance

Composite decking requires minimal upkeep, but regular cleaning will keep it looking its best. Timber components may need resealing over time.

Ensure Proper Drainage

Leave gaps between decking boards and ensure the foundation allows water to drain away, preventing pooling and damage.

Secure Deck Fasteners Properly

Loose screws or brackets can compromise the deck’s stability, so double-check all fasteners during installation.

Build for Safety

Install railings and stairs with care, especially on higher levels. Safety should always be a top priority.

Optimise Deck Layout

Think about how each level connects to create a cohesive flow. Pathways and open spaces should make the deck easy to navigate.

Get Help If Needed

Building a multi-level deck is a big project, so don’t hesitate to call in a professional if needed.

Final Thoughts

Building a multi-level deck is no small task, but the results are well worth the effort. With thoughtful planning, quality materials, and attention to detail, you can create a stunning outdoor space that’s both practical and beautiful.If you’re ready to start, consider composite boards for their durability and low maintenance. Free samples are a great way to see the difference they make. For more inspiration, take a look at our blog on different raised decking ideas and start designing the deck of your dreams!