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30mm Rockwool RW5 Acoustic Sound Insulation Slab (5.76m2/Pack)
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Very high-density stone wool slab for maximum acoustic performance. Suitable for reducing airborne sound in walls, floors, and ceilings. Slim profile fits space-restricted partitions or ceiling voids.
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Thu 2 Oct
- 0days
- 10hrs
- 5mins
- 39secs
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Split your purchase of £38.30 into 4 with no sign-up fees or late fees. Your purchase will be split into 4 payments, payable every 2 weeks
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- Choose Clearpay at checkout to pay later with Pay in 4.
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- Remaining payments are taken automatically.
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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. Slim profile fits space-restricted partitions or ceiling voids.
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}} 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
| Product: | RW5 |
|---|---|
| Material Type: | Rock Mineral |
| Thickness: | 30mm |
| Width: | 600mm |
| Length: | 1200mm |
| Pieces Per Pack: | 8 |
| Sales Unit: | Pack |
| Sales Unit Coverage: | 5.76m2 |
| Brand: | Rockwool |
| Manufacturer's Reference: | 181195 |
| Thermal Conductivity: | 0.034W/mK |
| Density: | 100kg/m3 |
| Fire Rating: | A1 Non-Combustible |
Technical Downloads
Product Overview
Stone wool insulation slab, 30mm thick and cut to 1200 × 600mm, developed for demanding acoustic and fire-rated constructions.
With a density of 100 kg/m³, the slab offers a robust balance of rigidity and sound absorption. The added mass helps to block airborne noise transfer, while the dense fibre structure absorbs sound within the cavity, improving acoustic comfort across partitions, floors, and ceilings.
This higher density also gives the slab excellent dimensional stability, supporting structural integrity and ensuring it holds its shape once installed.
Its semi-rigid form allows for a friction fit that minimises air gaps and maintains consistent performance.
Classified as non-combustible, the slab provides reliable fire resistance, contributing to enhanced safety within the building fabric.
At 30mm thick, it provides effective airborne sound reduction and dependable fire resistance, making it well suited to lining partitions, ceilings, and floors where space is restricted.
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.
- 30mm thickness: Slim profile for acoustic upgrades in walls and ceilings with tight voids.
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.
