75mm Rockwool RW5 Acoustic Sound Insulation Slab (2.16m2/Pack)

URN: 3002250
£36.09ex. VAT £16.71 per m2
£36.09ex. VAT
£16.71 per m2
Coverage required
m
m
Based on your total area of m2 (inc. 10% wastage) - of these are required (actual coverage of m2)

We recommend purchasing at least 10% extra product to allow for errors, damages or obstacles

Very high-density stone wool slab for maximum acoustic performance. Suitable for reducing airborne sound in walls, floors, and ceilings. Thicker board for outstanding sound absorption.

±20 Sold in multiples of 20

Nationwide Delivery

Fri 26 Sep

Order by 2pm today
  • 7hrs
  • 15mins
  • 42secs

Delivery & Returns Info

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Product Overview

Very high-density stone wool slab for maximum acoustic performance. Suitable for reducing airborne sound in walls, floors, and ceilings. Thicker board for outstanding sound absorption.

URN: 3002250
£36.09ex. VAT
±20 Sold in multiples of 20
±20 Sold in multiples of 20

Delivery & Returns Information

How Our Delivery Works

We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.

Delivery Areas & Charges

Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, FK, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.

Standard (Nationwide) Delivery

Insulation, Plasterboard and Drylining Products
ORDER VALUE DELIVERY CHARGE
Under £350 £35 ex. VAT
Over £350 ex. VAT FREE
Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £100 £15 ex. VAT
Between £100 - £300 ex. VAT £10 ex. VAT
Over £300 ex. VAT FREE
Screws & Fixings and Adhesives & Sealants
ORDER VALUE DELIVERY CHARGE
Under £50 £5 ex. VAT
Over £50 ex. VAT FREE

Express Delivery

Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE DELIVERY CHARGE
Under £400 £50 ex. VAT
Over £400 ex. VAT £35 ex. VAT
Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £300 £50 ex. VAT
Over £300 ex. VAT £35 ex. VAT

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Returns

We offer a 30 day returns policy on any faulty products.

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Key Features

  • {{home}} Use in ceilings, walls and floors
  • {{local_fire_department}} A1 non-combustible
  • {{density_medium}} 100kg/m3 density
  • {{volume_off}} Excellent acoustic and thermal performance
  • {{build}} 600mm width to fit between studwork
  • {{public}} Zero Ozone Depletion Potential (ODP)

Technical Specification

Technical Specification
Product:RW5
Material Type:Rock Mineral
Thickness:75mm
Width:600mm
Length:1200mm
Pieces Per Pack:3
Sales Unit:Pack
Sales Unit Coverage:2.16m2
Brand:Rockwool
Manufacturer's Reference:181199
Thermal Conductivity:0.034W/mK
Density:100kg/m3
Fire Rating:A1 Non-Combustible

Product Overview

High-density stone wool slab (100 kg/m³), measuring 1200 × 600mm.

The slab’s density provides two key benefits: greater structural stability in partitions through added rigidity, and enhanced acoustic performance through increased mass and fibre absorption. This dual action helps control both impact and airborne noise. 

At 75mm thick, this slab delivers strong airborne sound reduction for higher-spec walls, floors, and ceilings.

Features & Benefits

  • A1 non-combustible fire rating (BS EN 13501-1): Meets UK and Ireland Building Regulations for non-combustible materials.
  • Stone wool material: Naturally resists rot, fungal decay, and insect attack for long-term durability.
  • 100kg/m³ density: Rigid and stable, providing maximum sound absorption and secure fitting.
  • Semi-rigid slab format: Installs neatly between studs, joists, and rafters.
  • Open-fibre structure: Provides excellent sound absorption for reduced noise transfer.
  • Easily cut to size: Allows straightforward installation around services and fixtures.
  • Slab size 1200 x 600mm: Standard board dimensions suit common stud spacings.
  • 75mm thickness: Delivers enhanced acoustic absorption for high-performance partitions and floors.

Applications

  • Stud partitions: Enhances acoustic separation between rooms to meet Approved Document E standards.
  • Ceilings: Improves airborne sound insulation in shallow ceiling voids.
  • Floors: Adds effective acoustic performance to timber floors.
  • Separation walls: Provides fire safety and sound absorption in dividing walls.

Installation Guidance

  • Friction fit between studs/joists: Ensures slabs stay securely in place without gaps.
  • Cut with insulation saw or knife: Achieves accurate fitting around pipes, sockets, and structural details
  • Protect from moisture during install: Maintain insulation performance by keeping slabs dry until enclosed.

Compliance & Performance

  • Euroclass A1 non-combustible (BS EN 13501-1): Complies with Building Regulations requirements for non-combustible materials.
  • CE marked to BS EN 13162: Factory-made mineral wool insulation, tested for thermal conductivity (0.034 W/mK) and acoustic absorption performance.


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