Steel Frame Garden Rooms
Common misconceptions about steel builds
When it comes to building a garden room or annex, some people hesitate at the mention of steel. Many people feel nervous about using steel for outdoor structures, not because it’s ineffective, but simply because they are unfamiliar with it. Steel has long been associated with cold, industrial buildings, and concerns about condensation or poor insulation still linger. But those worries are outdated. In fact, steel is rapidly becoming one of the most popular materials for garden rooms and annexes thanks to its strength, sustainability, and adaptability to modern insulation techniques.
But the truth is, when engineered correctly with modern insulation techniques, steel-framed garden rooms can outperform traditional timber builds in both durability and energy efficiency.
Steel: Strong, Sustainable, and Surprisingly Efficient
Steel is one of the most robust and sustainable building materials available. It is resistant to rot, pests, and warping, issues that often plague timber structures over time. But the real game-changer lies in how we build with steel.
We incorporate warm bridging and warm roof technology into every garden room we construct. These innovations eliminate the thermal weaknesses that older steel structures were once known for.
What Is a Warm Roof and Why Does It Matter?
A warm roof is a roofing system designed to conserve heat by placing insulation above the structural rafters as well as between them. This method:
Prevents heat from escaping through the roof
Keeps the interior warmer in winter and cooler in summer
Reduces energy consumption and heating costs
Compared to traditional cold roofs, warm roofs offer superior thermal performance and year-round comfort.
Layered Protection for Long-Term Efficiency
Every garden room or annex we build is packed with high-performance insulation that fills the entire steel framework. But we don’t stop there. Once insulated, the structure is wrapped in a breathable waterproof membrane, creating a second barrier against moisture and weather. This dual-layer approach ensures:
Excellent thermal retention
Protection from damp and condensation
Long-lasting structural integrity
Make sure it is done right!
At InFrame, we have spent years refining our system design, backed by over 28 years of engineering experience. This deep technical foundation allows us to create garden rooms that are not only structurally sound but also thermally efficient and built to last. We have invested heavily in research and development to ensure every detail, from insulation to waterproofing, is optimised for performance.
While some companies treat steel framing as a quick-and-easy solution, simply throwing up a structure without much thought, we know better. Steel construction requires precision, planning, and expertise. That is why experience and thoughtful engineering make all the difference.
Our Expert Advice
Steel isn’t just a viable option for garden rooms, it is a smart one. With the right construction techniques, including warm roof systems and advanced insulation, steel-framed garden rooms offer unmatched strength, comfort, and energy efficiency.
So if you’re considering a garden room or annex, don’t let outdated myths steer you away from steel. When built with care and innovation, it’s one of the best materials you can choose.
