Rocksilk® RS60 Building Slab


Suitable for use in a variety of thermal and acoustic applications such as in ground floors, internal floors, separating floors, fabrication, pitched roofs at rafter level, internal walls/ partitions, light steel frame walls and timber frame walls.


Rocksilk® RS60 is a Rock Mineral Wool slab, designed for use in multiple thermal and acoustic applications.

It is non-combustible with the best possible Euroclass A1 reaction to fire classification, and is manufactured using Knauf Insulation's unique bio-based binder, ECOSE® Technology.

Features and benefits:

  • Good thermal performance.
  • Non-combustible A1 Euroclass Reaction to Fire classification.
  • Good sound absorption characteristics provide high levels of sound reduction.
  • Multi-purpose product range which can be used to insulate a wide range of applications on site.
  • Single slab can be used for multiple applications.
  • Can be provided with a factory applied foil or tissue facing, offering solutions for a wide variety of applications
  • Available in a wide range of densities to suit a variety of uses, applications and performance requirements.
  • Easy to cut with a large bladed knife or saw.
  • A+ generic BRE Green Guide rating.

General information



Rock mineral wool.




1200 x 600 mm

Uniclass 2015

Pr_80_77_76_53 Mineral wool duct slab insulationPrimary


H11/780 Thermal insulation

P10/250 Insulation supported between floor joists

P10/50 Insulation supported between joists

Specification data - Mineral wool duct slab insulation Enhanced data


BS EN 13162.



Thermal conductivity

0.034 W/mK.

Reaction to fire classification

Euroclass A1 (non-combustible) to BS EN 13501-1.

Insulation thickness (minimum)

25 mm.

40 mm.

50 mm.

60 mm.

75 mm.

100 mm.

Vapour barrier


Vapour permeability

5.00 MNs/g.m.

Product Reference

RockSilk® Building Slab RS60

RockSilk® Building Slab RS60 Foil Faced

RockSilk® Building Slab RS60 Tissue Faced

RockSilk® Building Slab RS60 Water Repellent Grade

Environmental information

Country of material origin

United Kingdom


BRE generic Green Guide rating of A+.


Digital objects

Platform Compatible Version Certified to




Download now from NBS National BIM Library


Knauf Insulation Rocksilk® Acoustic Floor Slab Insulation Data Sheet

Knauf Insulation Rocksilk® Acoustic Floor Slab Insulation Data Sheet

Third party certifications

  • Eurofins Gold Certificate for Indoor Air Comfort

Similar products from Knauf Insulation Ltd

Rocksilk® Fabrication Slab 

Rocksilk® Fabrication Slab 

Rocksilk® RS100 Building Slab

Rocksilk® RS100 Building Slab

Rocksilk® RS140

Rocksilk® RS140

Rocksilk® RS45

Rocksilk® RS45

Rocksilk® RS80

Rocksilk® RS80