Xtratherm Thin-R/CW(T&G) is the best solution when designers/regulations demand additional thermal insulation in external masonry walls. Xtratherm Thin-R boards achieve high standards of insulation whilst maintaining a residual cavity to prevent moisture penetration, without a substantial increase in the width of the cavity and of the overall wall thickness


Xtratherm XT/CW is manufactured under quality systems approved under EN ISO 9001: 2000 and it’s use is covered by BBA Certificate 07/4407.


Xtratherm Thin-R Boards can be readily cut using a sharp knife or fine toothed saw.

Electrical Services

When running electric cables within insulation, advice given in the BRE publication “ Thermal insulation: avoiding risks” and BS 7671: 2001 should be followed.


Xtratherm Thin-R is stable, rot proof and durable. It will remain an effective insulant for the life of the building.

Health & Safety

All Xtratherm products are safe to use and chemically inert. A Health & Safety information sheet is available from the Xtratherm Technical Support Department

Robust tongued and grooved jointing Clear cavity maintained No exposure restrictions Low emissivity foil facings

Thin-R Sloped Roof Insulation

Effective insulation of roof area Reduced insulation thickness Reduces thermal bridging Minimizes intrusion into living area

Thin-R Partial Fill Cavity Wall Insulation

Robust tongue & groove jointing Clear cavity maintained Corner & reveal panels Low emissivity foil facings

Thin-R Sloped Roof Insulation

Effective insulation of roof area Width Variable Reduced fitting time. Minimizes intrusion into living area

Thin-R Insulation for Drylining Walls

High thermal performance Drylining & insulation in one fix Shorter drying time Responsive insulation system

Thin-R Flat Roof Thermal Ply

Insulation & decking in one fix For new & refurbishment roofs

Thin-R Under Floor Insulation

Extra thermal performance Suitable for under floor heating Reduced insulation thickness High compressive strength

  25,30,35,40 (Square Edge)
  40,50,60,65,70,75,80,100 (T&G)



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