Knauf Rocksilk® RS60 Building Slab | 1200mm x 600mm | All Sizes

KnaufSKU: IUK00876

Sale price£55.03 

inc VAT

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Knauf Insulation Rocksilk® RS60 Rock Mineral Wool Slabs: Premier Insulation for Thermal, Acoustic, and Fire Protection


Optimise your construction with Knauf Insulation Rocksilk® RS60, engineered for exceptional performance in thermal insulation, fire protection, and acoustic control.

Achieving the highest Euroclass A1 fire safety rating and made using eco-friendly ECOSE® Technology, Knauf Insulation Rocksilk® RS60 ensures superior safety and energy efficiency.

Key Benefits

  • Multipurpose Use: Knauf Insulation Rocksilk® RS60 is ideal for various applications across residential, commercial, and industrial sectors.
  • Superior Sound Reduction: Knauf Insulation Rocksilk® RS60 provides unmatched sound absorption, enhancing indoor acoustic quality.
  • Enhanced Fire Safety: With a high melting point over 1000°C, Knauf Insulation Rocksilk® RS60 offers robust fire resistance superior to many other insulating materials.

Available Sizes

Thickness Thermal Resistance Length Width Slabs Per Pack
25mm 0.70m2K/W 1200mm 600mm 18
40mm 1.15m2K/W 1200mm 600mm 12
50mm 1.45m2K/W 1200mm 600mm 9
60mm 1.75m2K/W 1200mm 600mm 7
75mm 2.20m2K/W 1200mm 600mm 6
100mm 2.90m2K/W 1200mm 600mm 4

Product Specifications

Specification Value
Thermal Conductivity  0.034W/mK
Fire Classification A1
Generic BRE Green Guide Rating A+
Vapour Resistivity 5.00 MNs/g.m
Material Rock Mineral Wool
Density 60 kg/m3


  • Floor Insulation: Rocksilk® RS60 is perfect for insulating ground and internal floors, improving comfort and energy conservation.
  • Acoustic Barriers: Ideal for separating floors in multi-story buildings, Knauf Rocksilk® RS60 enhances privacy and noise control.
  • Thermal Insulation: Effective in pitched roofs at rafter level, Knauf Rocksilk® RS60 maintains consistent temperatures and reduces energy costs.
  • Partition Insulation: Use Rocksilk® RS60 for internal walls and partitions to create quieter, more private spaces.
  • Structural Insulation: Ideal for light steel and timber frame walls, Knauf Rocksilk® RS60 supports structural integrity while providing excellent insulation.

Frequently Asked Questions (FAQs)

What is Knauf Insulation Rocksilk® RS60?

Rocksilk® RS60 is a rock mineral wool slab designed for multiple applications including thermal insulation, fire protection, and acoustic improvements in various building structures. It's renowned for its non-combustible properties with a Euroclass A1 reaction to fire classification and is made using eco-friendly ECOSE® Technology.

What is the difference between Knauf Insulation Rocksilk® RS45, RS60, RS80, RS100 and RS140?

The Knauf Insulation Rocksilk® RS range consists of mineral wool slabs that differ primarily in density, which affects their thermal and acoustic insulation properties. The RS45, RS60, RS80, RS100, and RS140 are all designed for various applications but vary by density and, consequently, by their specific use-cases:

  • RS45 has a density of 45 kg/m3, making it suitable for a broad range of general applications where moderate insulation is needed.
  • RS60 has a density of 60 kg/m3, offering enhanced thermal and acoustic performance suitable for more demanding environments.
  • RS80 and RS100 increase in density and are typically used where higher performance insulation is necessary, such as in industrial applications or where superior fire resistance is required.
  • RS140 has the highest density at 140 kg/m3, providing the maximum level of insulation and fire protection, making it ideal for specialized applications needing the highest performance material.

Each slab type is also available in various thicknesses to accommodate different requirements, ensuring versatility across a range of construction scenarios.

Why choose Knauf Insulation Rocksilk® RS60 for your building?

Knauf Rocksilk® RS60 offers excellent levels of sound absorption and fire resistance, with a melting temperature exceeding 1000°C. It is versatile enough for use in everything from ground floors to pitched roofs and internal partitions, making it a preferred choice for comprehensive building insulation.

How does Knauf Insulation Rocksilk® RS60 enhance fire safety?

Thanks to its high melting point and rock mineral wool composition, Knauf Rocksilk® RS60 provides enhanced fire resistance that surpasses many mainstream insulating materials. Its Euroclass A1 rating ensures it contributes minimally to fire load and spread within a building.

Can Knauf Insulation Rocksilk® RS60 be used for soundproofing?

Absolutely. Knauf Rocksilk® RS60 is particularly effective in soundproofing applications due to its dense mineral wool structure which is excellent at absorbing sound. This makes it ideal for use in separating floors and internal walls where reducing sound transmission is crucial.

Is Knauf Insulation Rocksilk® RS60 environmentally friendly?

Yes, Knauf Insulation Rocksilk® RS60 is manufactured using Knauf's unique ECOSE® Technology, a bio-based binder that is free from formaldehyde, phenols, acrylics, and dyes. This not only makes it more sustainable but also healthier for indoor environments compared to traditional insulants.

Data Sheet PDF download - Click Here


Order Value Delivery Charge
Up to £200.00 ex-vat £100.00 ex-vat
£200.00 - £599.95 ex-vat £59.95 ex-vat
Above £599.95 ex-vat Free Delivery


Weekend Delivery
Available upon request


Parcel Rates
Delivery charge may vary depending on quantity and volume of your order.
Pricing will be calculated during checkout.


Local Delivery Charge
Within 35 miles of Postcode S63 9BL - Up to £500.00 ex-vat
Delivery Charge £35.00 ex-vat
Please contact us to arrange collections
Tel: 0300 303 4578 | Email:


Delivery charges will automatically be calculated within the checkout process.
Orders are only processed for delivery between 8.00am - 5.00pm Monday to Friday excluding bank holidays.
Moffett offload will be used for large bulky deliveries and only when agreed with you.
Please advise of any access issues on ordering.
Delivery is Kerbside only.
In the unlikely event that your delivery is not correct or damaged please notify us immediately and mark any issues on the delivery slip.


    Where We Deliver

    Delivery Areas

    We have a fleet of FORS delivery vehicles all with Moffett mechanical off loads that deliver nationwide. Sometimes we may use 3rd party carriers for smaller orders.


      Product Delivery Times

      The vast majority of our orders are dispatched within 3 working days, this can however be up to 5 working days, please contact us if you require something urgent.
      Speciality items may take up to 5-7 working days.
      We will contact you with in 24/48hrs of your order been placed to confirm delivery times and dates.

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