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RockShield System

RockShield System

Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

  • QA Certificate

    QA Certificate

    Certificate type


External wall insulation and render system.

Jump to:
+44 (0)1656 862621 www.rockwool.co.uk

High performance external wall thermal insulated render system providing a solution to problems of water penetration, condensation and excessive heat loss. Suitable for new build and refurbishment projects offering excellent thermal acoustic and fire protection. Can be applied to masonry and timber or steel framed and sheathed constructions.

The system comprises of a rot proof, dual density stone wool insulation finished with a reinforced render base coat and a water repellent decorative plaster. The finish can include features such as stone quoins, pilasters, corbels and cornices.

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.


Rockwool RockShield has been tested in accordance with BS 476-6: 1981 and BS 476-7: 1971 and achieved the requirements of Class 0 as defined in the Building Regulations.

General information

Uniclass 2015

Ss_25_45_72_02 Adhesive-fixed external wall insulation systemsPrimary


M21/20 External wall insulation system

M21/210 External wall insulation system

Specification data - Adhesive-fixed external wall insulation systems

Product Reference

RockShield System




RockShield Rigid Slabs

RockShield Facade Lamellas


___ mm

See Options.

Method of fixing


See Options.

Beads/ Trims

Rockwool Corner Profile and Base Profile

Render base coat

RockShield TC

RockShield LW

High Impact Coat

Decorative Coat




Grain size

1.5 mm

2.5 mm

3.5 mm



See Options and consult manufacturer for details and samples.

Paint finish

Not applicable

Colorsil ___

Consult manufacturer for details and samples.

Product Options


– RockShield Rigid Slabs:

  • Dimensions: 1000 x 500 mm.
  • Thicknesses: 30 to 200 mm in 10 mm increments.
  • Thermal Conductivity (λ): 0.036 W/mk.
  • Fire Rating: Non combustible.

– RockShield Facade Lamellas:

  • Dimensions: 1000 x 200 mm.
  • Thicknesses: 30 to 300 mm in 10 mm increments.
  • Thermal Conductivity (λ): 0.040 W/mk.
  • Fire Rating: Non combustible.

Method of fixing:

  • RockShield Facade Lamellas are generally adhesive only fixed, for use on substrates that are problematic for mechanical fixing. Also ideally suited to new-build construction, with a height limit of 20 metres.

Render base coat:

  • RockShield TC: A thin coat system with a total thickness of between 6 and 8 mm, including a reinforcing mesh for added strength.
  • RockShield LW: A thicker coat system with a total thickness of between 8 and 12 mm (it can be applied up to 20 mm thick), offering a higher level of tolerance on uneven substrates, including a reinforcing mesh for added strength.
  • High Impact Coat: For areas which are likely to be subject to high levels of impact, an additional high impact coat can be applied to both of the above systems.

Decorative coat:

  • Silcoplast: A state of the art development of plaster formulation giving excellent vapour permeability properties and providing a highly water repellent surface. Silcoplast is available in a stippled texture. It is ready mixed ensuring perfect colour matching and supplied in a wide range of standard and special colours.

Paint finish:

  • Colorsil paint is available in all of the same colours as the decorative coats and is totally water resistant and highly vapour permeable.

Third party certifications
  • 90/2437
  • Loss Prevention Certification Board (LPCB): LPS 1581 - Cert. No. 022h