Menu
Menu
Your Cart

50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)

50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
Guide Price
50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)
Guide Price: £41.73 (£50.08 inc VAT)
Price per m2: £5.80/m2 (£6.96 inc VAT)
  • Product Code: A1-70
  • Delivery Time: 1 - 2 days
  • Brand: Knauf
  • (Tech. support: 08000304135)
  • Model: 1200x600 - 7.2m2
  • Weight: 16.10kg
Our ratings on 25-06-2026:
Google My Business Reviews
4.8 out of 5
Hide other thicknesses
Guide Price: £41.63
(£49.96 inc VAT)
Guide Price: £34.12
(£40.94 inc VAT)
Guide Price: £45.60
(£54.72 inc VAT)
Hide other thicknesses

To GET BEST PRICE for this product only fill below:

Need a quote for more products? Add to Quote and continue browsing to find other materials needed.
Hide

50mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 10)

Width: 600mm
Length: 1200mm
Pack Quantity: 10
Density: 45kg/m3
Weight/m2: 2.25kg
Weight: 16.1kg
Thermal Conductivity: 0.035W/mK
R-Value: 1.4m2K/W
Fire Rating (Reaction to Fire): A1(Non-combustible)

50mm Knauf Rocksilk RS45 Universal Insulation Slab is a high-performance mineral wool insulation product suitable for a variety of applications. Manufactured from rock mineral wool using Knauf's unique bio-based ECOSE Technology binder, it provides excellent thermal and acoustic insulation properties. The mineral wool construction offers higher levels of sound absorption and reduction than other mainstream insulants. The slab has a higher density and a good thermal conductivity, helping to improve the energy efficiency of buildings and reduce heating and cooling costs. Knauf Rocksilk RS45 is non-combustible with Euroclass A1 reaction to fire classification, and the rock mineral wool has a melting temperature of over 1000°C to provide longer periods of fire resistance than other mainstream insulants. Knauf Rocksilk RS45 is also resistant to mould, mildew, and vermin, ensuring long-lasting performance and durability. Knauf Rocksilk RS45 is easy to cut and install, making it a versatile choice for insulating walls, floors, and roofs in both new build and refurbishment projects.

APPLICATION

Rocksilk RS45 Universal Slabs are used for a wide range of thermal and acoustic insulation applications in buildings, building services, and industry. This product can be used for insulating:
  • Internal partitions
  • Between timber and metal studs
  • Rafters and floor joists

CHARACTERISTICS

  • Manufactured from rock mineral wool using Knauf's bio-based ECOSE Technology binder
  • Provides excellent thermal and acoustic insulation performance
  • Mineral wool construction offers higher levels of sound absorption and reduction compared to other mainstream insulants
  • Density of 45kg/m³ and thermal conductivity of 0.035 W/mK
  • Non-combustible with Euroclass A1 reaction to fire classification
  • Rock mineral wool has a melting temperature over 1000°C for longer fire resistance
  • Odourless, non-hygroscopic, rot-proof, do not sustain vermin, and will not encourage the growth of fungi, mould, or bacteria
  • Lightweight
  • Easy to cut and install, making it versatile for walls, floors, and roofs
  • Sustainable insulation solution

CERTIFICATION

    Manufactured in accordance with:

    • In conformity with BS EN 13162
    • ISO 50001 Energy Management Systems
    • ISO 14001 Environmental Management Systems
    • ISO 45001 Occupational Health and Safety Management Systems
    • ISO 9001 Quality Management Systems


    Brand: Knauf Model: 1200mm x 1000mm - 16.8m2
    Delivery Time: 2 - 3 working days
    160mm Knauf Rocksilk Krimpact Flat Roof Slab is a high-performance insulation solution designed specifically for flat roofing applications. Manufactured from non-combustible stone wool, this product offers excellent thermal insulation properties, helping to maintain comfortable indoor temperatures w..
    Brand: Knauf Model: 1200x2400mm - 2.88m2
    Delivery Time: 1 - 2 days
    15mm Knauf Vidiwall is a dense fibreboard manufactured from gypsum and cellulose fibres from recycled paper that is suitable for areas of drywall construction where high impact resistance is required. Knauf Vidiwall is capable of providing increased durability, rigidity and mechanical strength compa..
    Brand: Knauf Model: 1200mm x 1000mm - 28.8m2
    Delivery Time: 8 - 12 weeks
    105mm Knauf Rocksilk Krimpact Flat Roof Slab Extra is a high-performance insulation solution designed specifically for flat roofing applications. Manufactured from non-combustible stone wool, this product offers excellent thermal insulation properties, helping to maintain comfortable indoor temperat..
    Brand: Knauf Model: 1200x2400 - 2.88m2
    Delivery Time: 1 - 2 days
    12.5mm Knauf Wallboard is a high-quality gypsum-based plasterboard commonly used for interior wall and ceiling applications. It consists of a solid gypsum core encased in a durable paper lining on both sides. The plasterboard provides a smooth, flat surface that is easy to decorate with paint, wallp..
    £10.74
    £12.89 inc VAT
    125mm Knauf  DriTherm Cavity Slab 34 Super (pack of 6) 125mm Knauf  DriTherm Cavity Slab 34 Super (pack of 6)
    Guide Price
    Brand: Knauf Model: 1200x455mm - 3.28m2
    Delivery Time: 2 - 3 working days
    125mm Knauf DriTherm 34 Super Cavity Slab is a high-performance insulation product specifically designed for use in external full-fill masonry cavity walls. These water-repellent glass mineral wool slabs provide exceptional thermal performance, making them an ideal choice for enhancing energy effici..
    Guide Price: £59.64
    £71.57 inc VAT
    Brand: Knauf Model: 900mm x 1200mm - 1.08m2
    Delivery Time: 5 - 7 days
    6mm x 900mm x 1200mm Knauf Rooftop Aquapanel Cement Board is an extremely durable construction board highly resistant to moisture, mould and mildew growth. It can be used as a cover board above the insulation and as a substrate to take on the waterproofing layer. Knauf Aquapanel Cement Board Rooftop..
    £40.88
    £49.06 inc VAT

    Rate this product

    Please login or register to review
    This product is listed in the following categories and systems (click to show).