Products
SIP Panels - Celotex (Sopratherm)
Celotex Sopratherm SIP panels for garden rooms, extensions and bespoke SIP kits, available in common UK-made UltraSIPS thicknesses.
Thickness guide
Not sure which SIP panel to choose?
122mm
Garden rooms
A practical starting point for non-habitable outbuildings, studios and garden rooms.
172mm
Extensions
Usually the safer default for habitable spaces, annexes and Building Control routes.
222mm
High performance
Used where lower U-values or stronger roof performance are part of the brief.
Need help choosing?
Send drawings or rough sizes before ordering
We can check the right SIP thickness, openings, delivery assumptions, and whether this collection fits your project.
ULTRASIPS
222mm SIP Panel with Celotex Core
From £212.62 inc VAT
4 options available
5-10 working days*
ULTRASIPS
172mm SIP Panel with Celotex Core
From £138.36 inc VAT
4 options available
5-10 working days*
ULTRASIPS
122mm SIP Panel with Celotex Core
From £109.75 inc VAT
4 options available
5-10 working days*
ULTRASIPS
97mm SIP Panel with Celotex Core
From £97.98 inc VAT
4 options available
5-10 working days*
ULTRASIPS
72mm SIP Panel with Celotex Core
From £86.69 inc VAT
4 options available
5-10 working days*