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60mm Rockwool Flexi Acoustic Sound Insulation Slab (8.64m2/Pack)
| 5+ packs | 10+ packs | 15+ packs |
| £54.84ex. VAT | £54.28ex. VAT | £53.16ex. VAT |
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Fri 12 Jun
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- 11hrs
- 40mins
- 47secs
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- Choose Clearpay at checkout to pay later with Pay in 4.
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Key Features
- {{home}} Use in ceilings, walls and floors
- {{local_fire_department}} A1 non-combustible
- {{volume_off}} Excellent acoustic and thermal performance
- {{build}} 600mm width to fit between studwork
Technical Specification
| URN: | 3002223 |
|---|---|
| Product: | Flexi |
| Brand: | Rockwool |
| Application: | Ceilings, Walls, and Floors |
| Indoor/Outdoor Usage: | Indoor |
| Material Type: | Rock Mineral |
| Thickness: | 60mm |
| Width: | 600mm |
| Length: | 1200mm |
| Weight: | 14.26kg |
| Sales Unit: | Pack |
| Sales Unit Coverage: | 8.64m2 |
| Pieces Per Pack: | 12 |
| Fire Rating: | A1 Non-Combustible |
| Moisture Resistant: | Water repellent & Non-hygroscopic |
| Thermal Conductivity: | 0.038W/mK |
| Density: | 33kg/m3 |
| Certification: | BS EN 13162 |
| Edge: | Patented Flexi Edge |
| Manufacturer's Reference: | 123320 |
Technical Downloads
Product Overview
Semi-rigid stone wool slab with a patented flexible edge for reliable friction fitting in framed build-ups.
Each slab measures 600mm × 1200mm, a format that is easy to handle on site and aligns with common stud and joist spacings to reduce cutting and waste.
It delivers dependable acoustic absorption, non-combustible fire safety (A1), and thermal conductivity of 0.038 W/mK without risk of slumping.
At 60mm thick, it’s a practical choice for framed walls, adding noticeable gains in both sound reduction and thermal comfort.
Features & Benefits
- FLEXI Edge® along one side: Ensures snug, continuous fit in timber or metal frames, reducing gaps and air leakage.
- Non-combustible stone wool (Euroclass A1): Contributes to fire-safe wall, floor, and roof constructions.
- Effective acoustic absorber: Reduces airborne sound transmission through stud partitions and intermediate floors.
- Thermal conductivity 0.038 W/mK: Supports energy-efficient envelopes within framed build-ups.
- Will not slump, even if studs shrink: Maintains full fill and consistent performance over time.
- Easy to handle and cut: Speeds installation and fitting around services with minimal waste.
- 60mm thickness: For framed walls needing improved sound and thermal insulation.
Applications
- Timber or metal stud partitions: Improves airborne sound reduction and thermal performance.
- Party walls in timber frame: Used within twin-frame/independent stud solutions to address acoustic and thermal bypass.
- Suspended timber floors: Laid between joists; supports sound control and U-value targets when used with appropriate membranes.
- Pitched roofs and warm/hybrid frames: Between rafters or as part of hybrid build-ups to enhance thermal continuity.
Installation Guidance
- Friction-fit installation: Flexible edge holds slabs tightly in place, reducing the need for mechanical fixings.
- Cut to fit with a sharp knife: Ensures minimal waste and precise fitting around services.
- Avoid gaps or voids: Maintains full thermal, acoustic, and fire resistance performance.
Compliance & Performance
- Reaction to fire classification A1 (EN13501-1): Fully non-combustible for high fire safety.
- Thermal conductivity 0.038 W/mK: Provides consistent insulation in framed constructions.
- High acoustic absorption: Tested to provide broadband sound reduction in lightweight partitions.
Delivery & Returns Information
Delivery charges vary by product category and order value. Items may ship from different suppliers and arrive separately, so delivery charges can be shown per part of your order at checkout.
Standard (Nationwide) Delivery
| Insulation, Plasterboard and Drylining Products | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £45 ex. VAT |
| Over £400 ex. VAT | FREE |
Express Delivery
| Express Delivery - Insulation and Plasterboard & Drylining | |
|---|---|
| ORDER VALUE | DELIVERY CHARGE |
| Under £400 | £90 ex. VAT |
| Over £400 ex. VAT | £55 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 |
How delivery works
We work with a nationwide network of trusted suppliers. Items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you will see delivery charges shown at checkout for each part of your order. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery areas
Delivery charges apply to mainland UK, excluding: AB, CA, CF, DD, DG, EH, EX, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, PL, SA, SY, TR, TQ and TD.
If your address is in one of these areas, we will contact you before processing your order to confirm any additional costs. We do not currently offer delivery outside the UK mainland.
What to expect on delivery day
- Deliveries are typically kerbside.
- Please ensure someone is on-site to accept delivery. For heavier items, help with offloading may be required.
- Many building materials arrive on large vehicles. If access is restricted, a specialist vehicle such as a HIAB may be required and could incur an additional charge.
Why delivery can cost more than typical parcel delivery
Building materials often travel on larger vehicles and usually carry fewer drops per run than parcel networks. That is why delivery charges can be higher than standard e-commerce shipping.
Returns
Returns depend on what you have bought and whether there is anything wrong with it. For full details on eligibility, timeframes, and exclusions, please see our full policy.
