
We supply and precision-cut SIP panels to meet the exact specifications of each project, ensuring structural strength, excellent thermal efficiency, and build accuracy.
Panels are prepared and delivered to suit any build, from self-build homes to large-scale residential developments across the UK, helping reduce on-site time, minimise waste, and ensure a consistently high-quality finish. We can also provide all structural calculations to help your build team.
McVeigh Offsite provides a professional SIP fabrication services for builders, developers, architects and self-builders across the UK. Using advanced machinery, including our new Stori Mantel beam saw, we manufacture highly accurate, factory-cut SIP panels ready for fast, efficient on-site assembly.
Whether you need SIP cutting for a full SIP panel kit or individual panels cut to size, our fabrication service helps reduce build time, minimise waste, and ensure consistent quality across every project.
Bespoke SIP panel fabrication to project drawings and specification.
Precision beam saw cutting for clean, accurate edges.
Cross-cutting to cut panels to specific lengths.
Panels clearly labelled and packed for logical assembly.
SIP packs suitable for residential, commercial and multi-unit builds.
Our SIPs can be supplied and delivered for Nationwide delivery or collection from our facility.
Our SIP panel cutting service is powered by a Stori Mantel beam saw, engineered specifically for high-accuracy panel fabrication at scale.
This technology allows us to manufacture SIP panels with tight tolerances and consistent panel sizing. Clean, square edges for faster site assembly. The result is a fully prepared SIP panel kit, reducing on-site adjustments and helping your build progress faster and more efficiently.
Our SIP panel fabrication service is designed to support a wide range of construction professionals and projects, including:To complete your SIP build, we can also supply associated structural components, including:
To complete your SIP build, we can also supply associated structural components, including:

Contact us to discuss your SIP cutting & fabrication project scope and requirements.
We create a tailored quotation based on your exact requirements. Once you’re happy to proceed, we handle all paperwork, confirm the appointment, and get your project moving without delay.
We convert your drawings into SIP fabrication data, including a detailed component schedule.
Our workshop cuts, routes and prepares each SIP panel using precision machinery.
Your SIP Panels are packed, labelled and delivered nationwide or made ready for collection.

As experts in SIP Panels we can also help with on-site SIP panel installation. Our team can advise on delivery, assembly sequencing, and — where available — provide installation support.
We have many great case studies where you can see all our SIP construction projects.






Yes, we can supply SIP panels without installation, tailored to your project requirements.
Yes, we supply glulam beams, internal timber frames, timber floors, floor joists, and structural steel to complement your SIP panels.
If we are designing the SIP build, our team will agree on the geometry and critical dimensions, then appoint a structural engineer to specify all structural elements. Once approved, we issue the drawings for manufacturing. These are broken down into SIP kit components, which our fabrication team arranges, cuts, and prepares. You can then either collect the kit or have it delivered anywhere in the UK.
Yes, our team can provide structural calculations as part of the SIP design and fabrication process.
Once you provide the designs for your building project, our team of building technicians will review them, assess the viability of the project, and make any recommendations. We’ll then discuss the project with your team, issue a detailed quote, and, once the quote is approved, commence production upon official instruction.
If the client is providing the design, we first review the data to ensure compatibility with our systems. If adjustments are needed (for example, a CAD or XL sheet modification), we’ll guide you through the process. Once the design is approved as compatible, we can commence SIP panel production and prepare the kit for delivery or collection.
McVeigh Offsite are specialists in SIP panels (Structural Insulated Panels) and SIP design & construction to create highly efficient building envelopes using the ‘Fabric First’ approach and sustainable designs.
Modular construction is a building method where homes are constructed in sections, or modules, in a controlled factory environment. These modules are then transported to the site and assembled into a complete home. This process improves quality control, reduces build time, and increases predictability.
Most modular homes are completed within 8–14 weeks, depending on size, level of customization, and site conditions. Because construction happens indoors, timelines are less affected by weather and seasonal delays.
Modular homes are typically highly energy-efficient due to precise construction, airtight building envelopes, and high-performance insulation. Optional off-grid and eco solutions can further reduce energy use.
Yes. Modular homes can be designed and engineered for a wide range of climates, including coastal, mountain, desert, and cold-weather environments.