CavityTherm is an innovative built-in insulation for traditional walls that achieves passive level U-values as low as 0.12 W/m²K with excellent thermal bridging detailing in cavities less than 150mm wide.

  • Engineered HIPs facer provides wind driven rain protection
  • Moisture redirected to outer surface
  • Prepositioned slots for sloping wall ties - no creep
  • Fully engineered jointing - no reliance on taping
  • Full range of accessory pieces build continuous system
  • Excellent Thermal bridging values
CavityTherm Typical U-values
(Inner Block 100)
Block Type 100mm 125mm 150mm
Light (0.15) 0.18 0.15 0.12
Med (0.33) 0.19 0.15 0.13
Dense (1.15) 0.20 0.16 0.13

Property & Units
Water Vapour Resistivity >100 (MNs/gm)
Thermal Conductivity 0.021 (W/mK)
Service Temperature -20 to +100 (ºC)

CavityTherm
Dimensions & R-values
*PIR only
Length (mm) 1200
Width (mm) 450
Thickness (mm) 100 125 150
Typical R-value* 4.52 5.71 6.90

 

Specification

The built in wall insulation system shall be_ _ _mm CavityTherm manufactured  to BS EN 13165:2012 by Xtratherm, including corner boards and ancillary detail components comprising of CFC/HCFC free engineered jointed rigid Polyisocyanurate (PIR) with a lambda value of 0.021 W/mK with heavy low emissivity foil facings and engineered outer skin to achieve a U-value of_ _ _W/m²K wall element. Refer to NBS clause F30 155, F30 12. To be installed in accordance with instructions issued by Xtratherm.

Do you have any questions?

Tale to the team who can help you with your project

Our Technical Team provides technical services throughout our customer bases in Ireland & UK. Their experience and expertise has been built through our engagement and participation with the Irish construction industry for over 30 years.

Certified Technical Knowledge.

Solutions you can trust.

Call The Technical Team:
Tel +44 (0) 371 222 1055
Tel +353 (0) 46 906 6050

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Accessories

CavityTherm provides a ‘system’ that delivers on U-values, is practical, and with a full range of innovative detailing accessories – it delivers on continuity.

Learn More
  • product-cavitytherm-accessory-1
    Integral Rain Barrier
  • product-cavitytherm-accessory-2
    Preformed Corner Panels
  • product-cavitytherm-accessory-3
    Service Void Panels
  • product-cavitytherm-accessory-4
    Jointing Strip
  • product-cavitytherm-accessory-5
    Hockey Stick Insulation
  • product-cavitytherm-accessory-6
    Cavity Tray Channel

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