Structural Insulated Panels (SIPs) are innovative building materials that combine energy efficiency, strength, and sustainability in one. These panels consist of a rigid foam insulation core sandwiched between two structural facings, typically oriented strand board (OSB). SIPs are transforming modern construction by reducing energy costs, speeding up build times, and providing robust, eco-friendly solutions.
SIPs are composite panels designed for high performance. They typically use a rigid polyurethane foam, known for its superior thermal efficiency. This core is bonded to structural facings, such as OSB, through an autohesive process, ensuring maximum strength and insulation.
Other insulants, such as expanded polystyrene (EPS) or extruded polystyrene (XPS), can also be used, but these require additional adhesives and are less thermally efficient than PUR. SIP facings are often OSB but may include plywood or metal for specific applications.
SIPs come in various thicknesses (125mm to 225mm) and dimensions, typically 1200mm wide and up to 7.5m long. These versatile panels can be customised to suit a wide range of architectural designs, climates, and structural needs.
SIPs are compatible with a variety of construction elements, including intermediate floors, roofs, internal walls, and supporting structures like steel or glulam beams. This adaptability makes SIPs ideal for residential, commercial, and industrial projects.
SIPs drastically reduce energy loss, thanks to their tight, uniform insulation cores and minimal thermal bridging. insulation cores achieve superior performance, making SIPs ideal for meeting net-zero or BREEAM building standards.
Manufactured under factory-controlled conditions, SIPs are prefabricated for precision. Once on-site, they assemble quickly, allowing for weatherproof superstructures to be completed within days. This reduces labour costs and project timelines without compromising quality.
SIPs are a “Fabric First” approach to construction, using less timber than traditional frames. The OSB facings are responsibly sourced, and PUR cores have an Ozone Depletion Potential (ODP) of zero and low Global Warming Potential (GWP). Offsite manufacturing minimises waste and reduces embodied energy and transport emissions.
The high strength-to-weight ratio of SIPs allows for larger sections to be fitted quickly and securely. Their robust design withstands extreme weather conditions, seismic activity, and long-term wear, offering a reliable and durable building solution.
The airtight construction of SIPs limits air leaks, creating healthier indoor spaces by preventing pollutants, allergens, and moisture infiltration. Controlled ventilation ensures consistent air quality and reduces the risk of mould and mildew.
While SIPs offer numerous benefits, there are some limitations to consider:
Initial Costs: The upfront cost of SIPs can be higher than traditional building materials. However, this is often offset by long-term savings on energy and labour.
Transportation Challenges: Large panels can be difficult to transport, especially to remote or urban sites with restricted access.
Ventilation Requirements: Due to their airtightness, buildings constructed with SIPs require well-planned ventilation systems to prevent issues like condensation and ensure air quality.
Specialised Installation: SIPs require skilled builders familiar with their unique installation methods, including proper sealing and integration of services.
Design Limitations: While versatile, SIPs may not be suitable for certain highly customised or unconventional architectural designs without additional engineering.
Fire Resistance: SIPs must be properly finished with fire-resistant materials to meet safety codes, as their foam cores are flammable without treatment.
SIPs are incredibly versatile and can be used in a variety of construction projects, including:
SIPs’ adaptability across climates and construction types ensures they can meet the needs of both standard and complex projects.
SIPs are manufactured by bonding rigid foam cores to structural facings under pressure and heat. Advanced machinery ensures uniform adhesive distribution, and quality control standards guarantee performance, durability, and safety. Panels are precision-cut to meet specific design requirements.
Installation is quick and efficient, using pre-cut panels that fit precisely. High-quality sealants and tapes create airtight joints, maximising energy efficiency. Electrical and plumbing systems are integrated via pre-cut channels, reducing on-site labour and waste.
Want more details about Structural Insulated Panels? Our brochures provide everything you need to know, from technical specifications to practical applications. They’re a great resource for anyone considering SIPs for their next project.
Download your brochures here and get all the information you need in one place.
