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A laminate of Rockwool insulation bonded to tapered edge plasterboard, designed principally as a dry lining material to achieve and improve upon the statutory requirements for acoustic and thermal insulation for new build and refurbishment projects. Rockwool Rockliner provides a cost effective and fire safe means of achieving excellent levels of thermal insulation coupled with good acoustic insulation.

Boards can be fixed with adhesive dabs or nailable plugs.

Rockwool charcteristics:

  • Non-combustible, water repellent, rot proof stonel wool material offering excellent thermal, acoustic and fire protection insulation.
  • Rockwool insulation products do not contain blowing agents with an ozone depletion potential (ODP) or global warming potential (GWP), are CFC-HCFC-HFC free and 97% recyclable. They will not react with metal components or cause loss of plasticiser from PVC cables and pipes.
  • Will not transmit water, due to the presence of water repellent additives. However, the product should not be used as protection against driving rain penetration; any external wall to which Rockliner is to be applied must resist moisture penetration.

Fixing methods:

  • Adhesive dabs: Each board is primed with three 200 mm wide bands of bonding adhesive. Pre-treatment may be necessary on some substrates to improve adhesion. Three rows of adhesive dabs are applied to the wall for each 900 mm wide board.
  • Mechanical fixing: On a true and level wall Rockliner can be fixed using nailable plugs. Plugs should be installed 50 mm from board edges, at 600 mm centres.

General information
Specification data - Thermal laminate gypsum plasterboards
Product Reference

Rockwool Rockliner


42.5 mm

52.5 mm

62.5 mm

Vapour check


Not required

Standard product features


Standard size: 2415 x 900 mm.

Fire performance:

  • Euro Class ‘A2’ to EN 13501-1; the base insulation material is non-combustible (Class ‘A1’).
  • Class 0 when tested in accordance with BS 476-6 & -7.

Thermal conductivity:

  • Rockwool Slabs: 0.034 W/mK.
  • Plasterboard: 0.16 W/mK.

Refer to Rockwool technical literature for U-values for typical wall constructions.

Vapour resistance:

Rockliner includes a foil backing to the plasterboard providing a vapour resistance of 60 MNs/g for the product.

Product Options


Standard thicknesses using 12.5 mm plasterboard:

  • 42.5 mm, using 30 mm Rockwool. Average weight per board: 27.4 kg.
  • 52.5 mm, using 40 mm Rockwool. Average weight per board: 30.3 kg.
  • 62.5 mm, using 50 mm Rockwool. Average weight per board: 33.5 kg.

Other thicknesses are available to special order, subject to minimum order quantities.