UK-made SIP kits
A SIP panel kit turns your design into a labelled set of structural panels — walls, roof and, where sold, floor — cut to size with the splines, timber and membrane the build-up needs. Configure a kit online for instant pricing, or send drawings and we will panelise and quote the SIP shell with delivery kept separate.
See it before manufacture
Use the configurator or your panel schedule to view the SIP shell before manufacture.
Cut to your drawings
panelised from your design
Open this preset to adjust the footprint, roof and package options in the configurator.
Open in configuratorChoose the right package
Compare thickness, use case, what is included, what is separate and how delivery is quoted before you order.
You want a complete SIP kit rather than loose boards.
You have a garden room, extension or annexe design and want it panelised, labelled and priced.
You want panels, splines, timber and membrane quoted together, with delivery shown separately.
Practical guidance
These points are written for buyers, builders and self-builders who need clear decisions before manufacture starts.
Use this page to understand what is normally included, what stays separate and what needs checking before manufacture.
What goes into the panels
Your quote shows the selected OSB and PIR option, so you know exactly what panel specification is being priced.
Sterling OSB3 Zero
West Fraser
Inner and outer structural OSB faces for SIP manufacture.
West Fraser describes SterlingOSB Zero as a BBA-approved OSB3 board made at its Inverness plant, with zero added formaldehyde.
IKO Enertherm ALU
IKO
High-performance PIR insulation core used in UltraSIPs panel manufacture.
IKO publishes BBA Agrément certificate product sheets for relevant Enertherm boards and lists IKO Insulations UK at Alconbury Weald.
SOPRATHERM XR / GA series
SOPREMA
PIR insulation core used in UltraSIPs standard and higher-performance panel build-ups.
SOPREMA lists SOPRATHERM GA4000 as previously Celotex GA4000, with BBA certification for defined pitched roof, dry lining and floor applications.
Panel specification
If you know the footprint, configure the kit online for live pricing. If you have drawings, send them in and we will panelise the design, produce a labelled panel schedule and price the SIP shell with delivery and exclusions set out clearly.
Kits cut and labelled in our UK workshop
Configurator with live SIP package pricing
QR-labelled panel schedules for every custom kit
Delivery and offloading guidance before you commit
Supplier evidence
These links show the product evidence behind the OSB and PIR materials we use. They help you compare the actual materials in the panel rather than relying on vague claims.
West Fraser SterlingOSB Zero
Used for the OSB faces in UltraSIPs SIP panels. West Fraser states that SterlingOSB Zero is manufactured in Inverness and is BBA-approved OSB3 for structural use in humid conditions.
Source: West Fraser product informationIKO Enertherm insulation
Used as one of the PIR core products in UltraSIPs panels. IKO lists UK manufacturing facilities and publishes certification resources including BBA certificates for relevant Enertherm boards.
Source: IKO certification resourcesSOPREMA / Celotex PIR
Used as one of the PIR core products in UltraSIPs panels. SOPREMA provides technical documents for its insulation products, and SOPRATHERM/Celotex BBA certificates exist for defined applications.
Source: SOPREMA document centreIncluded
Structural SIP wall and roof panels cut to your drawings
Splines and fixings to join the panels
Waterproofing/breather membrane where the build-up requires it
Timber pack sized to the build need plus 10% wastage where included
QR-labelled panel schedule so every panel is identified on site
Floors where sold separately for the project
Separated clearly
External cladding/render, windows, doors and rooflights
Foundations, groundworks, electrics, plumbing and internal finishes
Structural calculations unless specifically commissioned
Offloading on site — the customer’s responsibility unless assistance is agreed in advance
Keep moving
These guides help you compare the next decision without starting again.
Garden room SIP kits
Kits for studios, offices and non-habitable garden rooms.
SIP extension kits
Habitable extensions and Building Control-sensitive work.
SIP panels UK
Full boards, thicknesses and materials explained.
U-value calculator
Compare panel build-ups before you order.
Questions customers ask
A kit covers the structural SIP wall and roof panels cut to your drawings, plus the splines and fixings to join them and membrane where the build-up needs it. Timber is included sized to the build need plus 10% wastage where specified, and floors are supplied where sold separately. External cladding/render, windows, doors and internal finishes are not included.
122mm panels suit many non-habitable garden rooms, 172mm is the usual starting point for habitable extensions and annexes that must meet Building Control, and 222mm is available for stronger thermal performance. You can compare build-ups and U-values in our U-value calculator.
Yes. Delivery is quoted separately based on your postcode, the kit weight and vehicle access. Offloading on site is the customer’s responsibility unless assistance is agreed in advance.
Send your plans or sketches and we will panelise the design, produce a QR-labelled panel schedule and price the SIP shell, with delivery, installation and exclusions set out clearly before you commit.
Next step
