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View Product Reviews100mm Rockwool RW3 Acoustic Sound Insulation Slab (2.88m2/Pack)
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Product Overview
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 |
Returns
We offer a 30 day returns policy on any faulty products.
Key Features
- {{home}} Use in ceilings, walls and floors
- {{local_fire_department}} A1 non-combustible
- {{density_medium}} 60kg/m3 density
- {{volume_off}} Excellent acoustic and thermal performance
- {{build}} 600mm width to fit between studwork
- {{public}} Zero Ozone Depletion Potential (ODP)
Technical Specification
| Product: | RW3 |
|---|---|
| Material Type: | Rock Mineral |
| Thickness: | 100mm |
| Width: | 600mm |
| Length: | 1200mm |
| Pieces Per Pack: | 4 |
| Sales Unit: | Pack |
| Sales Unit Coverage: | 2.88m2 |
| Brand: | Rockwool |
| Manufacturer's Reference: | 181186 |
| Thermal Conductivity: | 0.034W/mK |
| Density: | 60kg/m3 |
| Fire Rating: | A1 Non-Combustible |
Technical Downloads
Product Overview
Semi-rigid stone wool slab (60 kg/m³), cut to 1200 × 600 mm.
The slab’s balanced density combines flexibility for straightforward installation with dependable acoustic, fire, and thermal performance.
It absorbs airborne noise, provides non-combustible fire protection, and helps maintain energy efficiency.
At 100mm thick, it offers maximum acoustic and thermal performance, making it the best choice for partitions, ceilings, and floors where the highest standards of noise reduction, energy efficiency, and fire protection are required.
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.
- 60kg/m³ density: Provides rigidity for friction fitting and reliable acoustic performance.
- Semi-rigid slab format: Fits 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.
- 100mm thickness: Provides maximum noise reduction in specialist acoustic and fire-rated constructions.
Applications
- Stud partitions: Enhances sound reduction between rooms, meeting Approved Document E requirements.
- Ceiling upgrades: Improves airborne sound insulation in residential or commercial builds.
- Floor voids: Adds acoustic performance to timber floors, reducing impact and airborne sound.
- Service risers and enclosures: Provides fire and acoustic protection in building services applications.
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 in internal partitions, floors, and ceilings.
- 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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