At Pecasa, build quality starts with the structure itself. That’s why our premium garden rooms and annexes are constructed using Structural Insulated Panels (SIPs) — an advanced building system designed to deliver exceptional strength, thermal efficiency, and long-term performance.
Unlike traditional timber frame methods, SIPs combine a rigid insulating core bonded between two structural boards. This creates a highly efficient building envelope that significantly reduces heat loss while maintaining excellent structural integrity. The result is a garden building that feels comfortable in winter and cool in summer, making it suitable for genuine year-round use.
One of the key advantages of Structural Insulated Panels (SIPs) is their precision manufacturing. Because panels are produced in controlled conditions, installation on site is faster, cleaner, and more consistent compared to conventional construction. This aligns perfectly with Pecasa’s commitment to delivering high-quality garden rooms with minimal disruption to your home.
For homeowners investing in a bespoke garden room or annexe, thermal performance matters. Buildings constructed with Structural Insulated Panels (SIPs) offer superior insulation values, improved airtightness, and enhanced durability — helping protect your investment for years to come.
When combined with our ground screw foundations, EPDM roofing, and premium internal finishes, SIPs form part of the Pecasa build standard that sets our garden buildings apart from basic alternatives on the market.