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View Product Reviews75mm Rockwool RWA45 Acoustic Sound Insulation Slab (4.32m2/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}} 45kg/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: | RWA45 |
|---|---|
| Material Type: | Rock Mineral |
| Thickness: | 75mm |
| Width: | 600mm |
| Length: | 1200mm |
| Pieces Per Pack: | 6 |
| Sales Unit: | Pack |
| Sales Unit Coverage: | 4.32m2 |
| Brand: | Rockwool |
| Manufacturer's Reference: | 209290 |
| Thermal Conductivity: | 0.035W/mK |
| Density: | 45kg/m3 |
| Fire Rating: | A1 Non-Combustible |
Technical Downloads
Product Overview
Multi-application stone wool slab with strong all-round acoustic, thermal, and fire performance. Suitable for walls, floors, and roofs.
75mm is suited to partitions needing strong acoustic performance. Offers substantial sound absorption while maintaining manageable thickness for partitions and floor builds.
Features & Benefits
- Euroclass A1 fire classification: Non-combustible in accordance with BS EN 13501-1.
- Stone wool mineral slab: Naturally resistant to rot, fungal decay, and insect attack.
- Square-cut edges: Butt together cleanly for continuous insulation layers.
- Porous fibre structure: Absorbs sound energy, reducing noise transfer through walls and floors.
- Semi-rigid slab: Simple to shape with a knife and friction-fit between studs or joists.
- Thermal conductivity 0.035 W/m·K: Helps maintain building energy efficiency.
- Sustainable manufacture: Made from natural volcanic rock, recyclable, zero ODP/GWP.
- 75mm thickness: Suited for partitions requiring strong acoustic performance.
Applications
- High-performance stud partitions: Strong sound insulation for demanding builds.
- Separating floors in multi-occupancy housing: Significantly reduces airborne noise.
- Ceilings in noisy environments: Provides robust acoustic control.
- Drylined wall systems: Adds substantial acoustic and thermal upgrade.
Installation Guidance
- Cut accurately with knife or insulation saw: Ensures a close friction fit.
- Fit slabs snugly with no gaps: Maintains fire and acoustic integrity.
- Wear gloves and protective clothing: Prevents irritation from mineral fibres.
Compliance & Performance
- Thermal conductivity: Declared 0.035 W/m·K (EN 13162).
- Fire performance: Euroclass A1 non-combustible (BS EN 13501-1).
- Certification: CE and Key marked to BS EN 13162:2012 + A1:2015.
- Acoustic standards: Supports compliance with Approved Document E (England & Wales), Section 5 (Scotland), and BB93 (schools).
- Marine/offshore certification: Lloyd’s Register approved as non-combustible.
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