CavityTherm Flex is the perfect solution when insulating fair faced inner block walls or when block is laid flat resulting in an uneven surface to accept the insulation. The 20mm flexible fleece layer absorbs any variations due to block tolerances, providing a continuous unbroken bond between insulation layer and block. CavityTherm Flex achieves Passive level U-values as low as 0.14 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
  • Flexible backing to eliminate indentations
  • Prepositioned slots for sloping wall ties
  • Fully engineered jointing
  • Full range of accessory pieces build continuous system
  • Excellent Thermal bridging values
CavityTherm Flex U-values
(Inner block 215)
Includes 5mm residual cavity, 20mm flexible fleece, plaster finish.
Block Type 125mm 150mm
Light 0.15 0.14 0.12
Med 0.33 0.16 0.14
Dense 1.15 0.17 0.14

CavityTherm Flex U-values
(Inner block 100)
Includes 5mm residual cavity, 20mm flexible fleece, plaster finish.
Block Type 125mm 150mm
Light 0.15 0.15 0.13
Med 0.33 0.17 0.14
Dense 1.15 0.17 0.14

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

CavityTherm Flex
Dimensions & R-values
* PIR and Flexible Fleece
Length (mm) 1200
Width (mm) 450
Thickness (mm) 125 150
Typical R-value* 5.50 6.70

 

Specification

The built-in full fill cavity wall insulation shall be CavityTherm Flex by Xtratherm,
including corner boards and ancillary detail components, comprising a rigid
Polyisocyanurate (PIR) core manufactured to EN 13165 between low emissivity foil
facings and Flexible Fleece to inner skin with engineered HIPS to outer skin. The
CavityTherm Flex _ _ _mm with a declared Lambda value of 0.021 W/mK (PIR) and
0.036 W/mK (Flexible Fleece) to achieve a U-Value of __ _ _W/m2K for the wall
element. To be installed in accordance with instructions issued by Xtratherm.
Refer to NBS clause F30 150, F30 12

 

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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