Steve Jones, Sales Director at NBP (Northern Building Plastics), shares his thoughts on the rising demand for garden buildings, and what it means for materials, supply chains and self-builders.
Why garden buildings are on the rise
The way we use our homes has changed dramatically in recent years. Remote and hybrid working have created a need for dedicated workspaces that separate professional life from home life. For many homeowners, the solution has been found at the end of the garden.
In this feature, I want to share some thoughts on how this trend is reshaping domestic architecture, and in particular, what it means for the construction and materials supply chain. From insulation and material choices to foundations and cladding, the components we select are central to the success of these projects – and to the opportunities they create for self-builders, builders and merchants alike.
Materials at the heart of the trend
Behind every garden building is a careful balance of design and materials. Unlike traditional home extensions, these standalone structures demand a different approach to construction, especially when it comes to foundations, insulation and cladding.
Self-builders must consider how materials affect not just the aesthetics of their project, but its durability and performance year-round. The right choices ensure comfort, energy efficiency and compliance with building standards.
For suppliers, the rise of garden buildings highlights the importance of a strong, reliable supply chain. Builders and self-builders alike benefit from access to high-quality insulation, cladding, roofing and structural products to keep projects on track.
Foundations matter more than you think
A garden building may be smaller in scale than a house, but its foundations are no less important. Poor ground preparation can lead to movement, instability or damp ingress, undermining the investment.
Concrete slabs remain the most common solution, though modern alternatives such as ground screws are increasingly popular for their speed of installation and reduced environmental impact. The key is ensuring that the chosen materials and methods suit both the soil conditions and the intended use of the building.
Merchants and suppliers have an important role in supporting builders with the right advice and products – from structural timbers to moisture barriers – so that garden buildings stand the test of time.
The critical role of insulation
Insulation is one of the defining elements of a successful garden building. Without it, even the most attractive structure risks becoming unusable for much of the year.
PIR insulation is a practical choice for self-builders, combining strong thermal performance with ease of installation. Using the right insulation ensures comfort and reduces running costs, while suppliers can support projects by maintaining reliable stock.
Cladding: modern alternatives
While timber was traditionally used for garden buildings, today most self-builders choose low-maintenance alternatives. PVC, composite and fibre cement cladding are increasingly popular, providing durability, weather resistance and design flexibility. Thoughtful cladding choices not only enhance appearance, but also extend the life of the building.
Roofing and waterproofing solutions
A reliable roof is critical to any garden building. Options such as self-adhesive rubber roofing, EPDM or GRP systems are frequently used to provide waterproof protection, while torch-on felt remains a practical and familiar choice. OSB timber and breathable membranes are often incorporated to create a strong, weather-resistant base. Selecting the right roofing combination ensures durability, long-term usability, and manageable installation for self-builders.
Rainwater and roofline
A well-considered roofline protects the building from water damage. Guttering and fascia boards are available in a variety of profiles and colours, allowing self-builders to manage rainwater effectively while complementing the overall design.
Supply chain resilience is key
For self-builders, delays in material availability can be frustrating and costly. For suppliers, anticipating demand, holding the right stock and providing dependable service is essential.
The garden building boom underlines the importance of supply chain resilience. Builders and merchants who can rely on prompt deliveries and consistent stock levels are best placed to take advantage of this growing market.
A growing opportunity for self-builders and merchants
Garden buildings are more than just a passing trend. They reflect a long-term shift in how we live and work, with flexibility, comfort and sustainability at the forefront. For self-builders, they represent an achievable way to create tailored spaces that add real value to their properties.
For merchants and suppliers, they offer a growing niche where product knowledge, stock availability and customer service can make all the difference.
By focusing on the materials that make garden buildings effective – foundations, PIR insulation, cladding, roofing, and roofline – and by nurturing strong supply chain partnerships, the industry can continue to support self-builders in creating spaces that enhance both homes and lifestyles.