Structural Insulated Panels SIPS
Structural insulated panels (SIPs) are a form of composite sandwich panel system that incorporates insulation, predominantly used for residential and light commercial construction.
They take the form of an insulating core (such as closed-cell polyurethane foam or expanded polystyrene) sandwiched between two structural facings. In the UK, the mainstream suppliers typically use the same structural facing – oriented strand board (OSB), which complies with the British Standard BS EN 300 for structural integrity.
SIPs are manufactured under factory-controlled conditions off-site and can be installed quickly once on site. The benefits of using SIPs are that they are high-strength, provide good thermal performance and can be fabricated to fit nearly any building design. They can prove cost-effective as a design solution (costing around the same as timber frame construction) due to their quick installation, reduced waste, energy use reduction and inherent strength (up to six times stronger than a regular timber frame).
The maximum length of a SIP is typically 7.5 m for walls and roofs. Floors can reach spans of up to 4 m. Various thicknesses are available, although the standard panel width is 142 mm.
[edit] Related articles on Designing Buildings
- Cladding for buildings.
- Composites.
- Construction materials.
- Curtain wall systems.
- Insulation.
- Panelling.
- Polyurethane spray foam in structurally insulated panels and composite structures.
- Rainscreen.
- Sandwich panel.
- Sarking.
- Thermal behaviour of architectural fabric structures.
- Timber engineered structural frames.
- Types of insulation.
Featured articles and news
Do you take the lead in a circular construction economy?
Help us develop and expand this wiki as a resource for academia and industry alike.
Warm Homes Plan Workforce Taskforce
Risks of undermining UK’s energy transition due to lack of electrotechnical industry representation, says ECA.
Cost Optimal Domestic Electrification CODE
Modelling retrofits only on costs that directly impact the consumer: upfront cost of equipment, energy costs and maintenance costs.
The Warm Homes Plan details released
What's new and what is not, with industry reactions.
Could AI and VR cause an increase the value of heritage?
The Orange book: 2026 Amendment 4 to BS 7671:2018
ECA welcomes IET and BSI content sign off.
How neural technologies could transform the design future
Enhancing legacy parametric engines, offering novel ways to explore solutions and generate geometry.
Key AI related terms to be aware of
With explanations from the UK government and other bodies.
From QS to further education teacher
Applying real world skills with the next generation.
A guide on how children can use LEGO to mirror real engineering processes.
Data infrastructure for next-generation materials science
Research Data Express to automate data processing and create AI-ready datasets for materials research.
Wired for the Future with ECA; powering skills and progress
ECA South Wales Business Day 2025, a day to remember.
AI for the conservation professional
A level of sophistication previously reserved for science fiction.
Biomass harvested in cycles of less than ten years.
An interview with the new CIAT President
Usman Yaqub BSc (Hons) PCIAT MFPWS.
Cost benefit model report of building safety regime in Wales
Proposed policy option costs for design and construction stage of the new building safety regime in Wales.
Do you receive our free biweekly newsletter?
If not you can sign up to receive it in your mailbox here.






















