Products Catalogue
Therm'X BACK

Reflecting vapour-breathing roof underlay to improve temperature comfort in summer and to supplement thermal insulation in winter.

  • Very strong vapour permeability: laying with immobile air layer without condensation risk.
  • Strong reflectivity on surface: effective improvement of temperature agreeability in summer in the underlying roof spaces.
  • Strong reflectivity on the underlay: in winter, reflecting roof underlay effect, supplementing the thermal insulation installed above the roof spaces.
  • High nail tear strength: rating.
Main uses
  • Therm’X is designed to be installed in the following ways:
    • Taut laying on rafters or on underlying truss components with maximal on-centre of 90 cm;
    • Direct laying on thermal insulation board (Integra Reno system from Isover);
    • Plains climate: under altitude of 900 m;
    • Premises with low or medium humidity;
    • Roofing of small elements (clay tiles, slates…);
    • New roof works (additional thermal insulation on attics not suitable for conversion as well as on converted attics).
  • To be laid taut on the framing in compliance with the local Technical Standards.
  • Need of air gap located between the Therm\'X roof underlay and the roofing.
  • Use a Therm’X adhesive tape to provide an effective closure next to the laps of the strips, the roof penetrations (chimneys, ventilations, etc.) as well as at the junction with the flashing strips between the eaves and the gutter. This precaution prevents the air from moving along the underface of the membrane.
  • The Therm’X closes the ridge with a lap of 20 cm.
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