.jpg)
4 Reviews
View Product Reviews50mm Rockwool RWA45 Acoustic Sound Insulation Slab (6.48m2/Pack)
Coverage required
Multi-application stone wool slab with strong all-round acoustic, thermal, and fire performance. Suitable for walls, floors, and roofs. 50mm is ideal for sound absorption in stud walls and floors.
Nationwide Delivery
Thu 18 Sep
- 0days
- 12hrs
- 51mins
- 2secs
Learn more
Pay in 3 interest-free payments
Split your purchase of £27.09 into 3 with no sign-up fees or late fees.
£9.03
today
£9.03
1 month
£9.03
2 months
How it works
- Choose PayPal at checkout to pay later with Pay in 3.
- Complete your purchase with the first payment today.
- Remaining payments are taken automatically.
Pay in 3 is a form of credit, so carefully consider whether the purchase is affordable and how you will make the repayments. Be aware of the possible impact of using Pay in 3 and of missing payments, including making other borrowing more difficult or more expensive. Pay in 3 eligibility is subject to status and approval. 18+ UK residents only. Available for purchases of £30 to £2,000. Terms and conditions apply. PayPal Pay in 3 is a trading name of PayPal (Europe) S.à r.l. et Cie, S.C.A. 22-24 Boulevard Royal L-2449, Luxembourg.
Learn more
Buy now. Pay with Klarna at your own pace.
Get what you need for your next project, choose how you pay.
Pay in 30 days
£27.09
Pay in full
Klarna's Pay in 30 days is an unregulated credit agreement. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. T&Cs and late fees apply.
Pay over time
£9.03
Every 30 days
Pay in 3
£9.03
today
£9.03
in 30 days
£9.03
in 60 days
Klarna's Pay in 3 is an unregulated credit agreement. Borrowing more than you can afford or paying late may negatively impact your financial status and ability to obtain credit. 18+, UK residents only. Subject to status. T&Cs and late fees apply.
How it works
- At checkout select Klarna.
- Choose your payment plan.
- Different payment plans may be shown depending on the purchase amount and credit score.
- Complete your checkout.
- The amount will be charged based on the payment plan you chose.
Learn more
Pay in 4 interest-free payments
Split your purchase of £27.09 into 4 with no sign-up fees or late fees. Your purchase will be split into 4 payments, payable every 2 weeks
£6.77
today
£6.77
second payment
£6.77
third payment
£6.77
fourth payment
How it works
- Choose Clearpay at checkout to pay later with Pay in 4.
- Complete your purchase with the first payment today.
- Remaining payments are taken automatically.
Clearpay is unregulated credit. Use responsibly. 18+, T&Cs and late fees apply at clearpay.co.uk/en-GB
Clearpay lends you a fixed amount of credit so you can pay for your purchase over 4 instalments, due every 2 weeks. Ensure you can make repayments on time. You must be 18+ and a permanent UK resident (excl Channel Islands). Clearpay charges a £6 late fee for each late instalment and a further £6 if it’s still unpaid 7 days later. Late fees are capped at £6 for orders under £24 and the lower of £24 or 25% of the order value for orders over £24. Missed payments may affect your ability to use Clearpay in the future and your details may be passed onto a debt collection agency working on Clearpay’s behalf. Clearpay is credit that is not regulated by the Financial Conduct Authority. T&Cs and other eligibility criteria apply at clearpay.co.uk/terms
Product Overview
Multi-application stone wool slab with strong all-round acoustic, thermal, and fire performance. Suitable for walls, floors, and roofs. 50mm is ideal for sound absorption in stud walls and floors.
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: | 50mm |
| Width: | 600mm |
| Length: | 1200mm |
| Pieces Per Pack: | 9 |
| Sales Unit: | Pack |
| Sales Unit Coverage: | 6.48m2 |
| Brand: | Rockwool |
| Manufacturer's Reference: | 181176 |
| 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.
50mm is ideal for sound absorption in stud walls and floors. Provides effective attenuation of airborne sound, with additional thermal insulation and non-combustible fire performance.
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.
- 50mm thickness: Common choice for stud walls and floor assemblies.
Applications
- Standard stud walls: Reliable option for reducing airborne sound.
- Intermediate floor assemblies: Improves separation between rooms above and below.
- Ceilings in residential or office spaces: Reduces noise transfer effectively.
- Drylined linings and partitions: Provides combined thermal and acoustic insulation.
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.
Customer Reviews
The team at Materials Market offered an extensive product range and I chose this after learning RW5 had a later delivery date. The RWA45 is great at preventing sound waves.
This rockwool insulation was great at absorbing all the sounds from the neighbours. It's a mineral wool insulation so also non-combustible. Can sleep safely at night knowing it's not a fire hazard.
Does exactly what it's suppose to do, reduce the noise from my kitchen!
amazing
Leave a Review
Related Articles
How and Where Is Rockwool Manufactured?
