Menu
Menu
Your Cart

75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)

75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
Guide Price
75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)
Guide Price: £34.12 (£40.94 inc VAT)
Price per m2: £7.90/m2 (£9.48 inc VAT)
5 or more £33.58 (£40.30 inc VAT)
10 or more £33.03 (£39.64 inc VAT)
20 or more £32.17 (£38.60 inc VAT)
  • Product Code: A1-71
  • Delivery Time: 1 - 2 days
  • Brand: Knauf
  • (Tech. support: 08000304135)
  • Model and Size: 1200x600 - 4.32m2
  • Weight: 14.58kg
Our ratings on 27-06-2025:
Google My Business Reviews
4.8 out of 5
Show other thicknesses

75mm Rocksilk RS45 Universal Insulation Slab Knauf (pack of 6)

Width: 600mm
Length: 1200mm
Pack Quantity: 6
Pack Coverage: 4.32m2
Density: 45kg/m3
Weight/m2: 3.38kg
Weight: 14.58kg
Thermal Conductivity: 0.035W/mK
R-Value: 2.1m2K/W
Fire Rating (Reaction to Fire): A1(Non-combustible)

75mm 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 and Size: 1200x3000mm - 3.6m2
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..
Get Best Price
100mm Rocksilk RS60 Universal Insulation Slab Knauf (pack of 4) 100mm Rocksilk RS60 Universal Insulation Slab Knauf (pack of 4)
Guide Price
Brand: Knauf Model and Size: 1200x600 - 2.88m2
Delivery Time: 1 - 2 days
100mm Knauf Rocksilk RS60 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 properti..
Guide Price: £41.24
£49.49 inc VAT
Get Best Price
15mm Knauf Performance Plus - High Performance Plasterboard 1200x2400mm
Guide Price
Brand: Knauf Model and Size: 1200mm x 2400mm - 2.88m2
Delivery Time: 1 - 2 days
15mm Knauf Performance Plus is a high-performance multi-use plasterboard featuring a distinctive grey face and a high-density core enriched with performance-enhancing ingredients. This innovative plasterboard is designed to provide superior levels of sound, moisture, fire, and impact resistance, mak..
Guide Price: £33.25
£39.90 inc VAT
Get Best Price
Brand: Knauf Model and Size: 1200x2400mm - 161.28m2
Delivery Time: 1 - 2 weeks
12.5mm Knauf Windliner has been developed for steel infill construction methods. It is a 12.5mm paper-faced gypsum sheathing board, designed to provide protection against the weather for the outer face of the metal stud external wall. Knauf Windliner has a fire and moisture resistant core and is fac..
£1,928.12
£2,313.74 inc VAT
Add to Cart
8mm Knauf Aquapanel Cement Board SkyLite 900mm x 1200mm 8mm Knauf Aquapanel Cement Board SkyLite 900mm x 1200mm
Guide Price
Brand: Knauf Model and Size: 900mm x 1200mm - 1.08m2
Delivery Time: 2 - 3 weeks
8mm Knauf Aquapanel Cement Board SkyLite is an extremely durable ceiling board that can be used in wet indoor areas such as bathrooms, shower rooms and wet rooms as well as some exterior soffits, dependent on specification. Knauf Aquapanel Skylite is resistant to mould and mildew and doesn't get wet..
Guide Price: £27.13
£32.56 inc VAT
Get Best Price
Knauf Aquapanel Water Barrier - 1.5m x 50m roll
Guide Price
Brand: Knauf Model and Size: 1.5m x 50m - 75m2
Delivery Time: 3 - 5 days
1.5m x 50m Knauf Aquapanel Water Barrier is a water resistant and wind tight membrane to be used behind the Knauf Aquapanel Exterior panel, that would stop the ingress of water into the wall. The Knauf Aquapanel Water barrier is moisture-permeable.APPLICATIONExterior walls, ceilings and soffitsCHARA..
Guide Price: £252.02
£302.42 inc VAT
Get Best Price
This product is listed in the following categories and systems (click to show).