Rockwool RW5 50mm Insulation 600x1200mm 2.88m2

Name: Rockwool RW5 50mm Insulation 600x1200mm 2.88m2
Brand: Buildboard

More sizes of this item can be found here:

Details

This product is on an extended lead time in to some areas – Please message us before hand on livechat or customerservices@supremeindustriesltd.co.uk to check stock levels in your area if delivery time is required.

The Rockwool RW5 50mm acoustic insulation slab is a premium-density stone wool product, engineered for high-spec acoustic, thermal and fire applications. Each slab measures 1,200 mm × 600 mm and the pack covers approximately 2.88 m² (4 slabs) . With a nominal density of 100 kg/m³ , this slab offers excellent mass and acoustic absorbency — making it ideal for separating walls, ceilings, floors or environments where noise reduction and fire safety are critical. Its thermal conductivity is rated at 0.034 W/m·K (λD) , so alongside acoustic benefits you’re getting solid thermal insulation performance too. Crucially, the RW5 slab is classified Euroclass A1 (non-combustible) under BS EN 13501-1, meaning it won’t burn and is suited for fire-sensitive builds. The semi-rigid stone wool format allows for easy handling and friction-fit installation between studs, joists or rafters — helping you maintain full cavity fill and reduce gaps that compromise performance. The high density resists sagging or deformation over time, offering long-term reliability. Installation tip: Ensure slabs are cut to size, fit snugly edge-to-edge with no voids, and the surrounding structure is sealed (especially around services and penetrations) to optimise acoustic and fire performance. Whether you’re specifying for high-traffic commercial partitions, multi-residential flats, sound-sensitive spaces (like home cinemas or offices) or any refurbishment where depth is limited but performance counts — Rockwool RW5 50 mm gives you a trusted, spec-ready solution.

Key Features

Thickness: 50 mm — deeper than thinner options for better acoustic/thermal balance.

Dimensions: 1,200mm × 600mm (L×W) .

Pack coverage: ~ 2.88 m² (4 slabs per pack) .

Density: 100 kg/m³ — high mass for superior sound dampening.

Thermal conductivity: 0.034 W/m·K — strong thermal insulation.

Fire rating: Euroclass A1 (non-combustible) — top fire safety.

Material: Stone wool (rock mineral wool) — naturally fire-resistant, dimensionally stable, water-repellent.

Applications: Internal partitions, separating walls/floors/ceilings, media rooms, commercial and residential refurb.

Installation: Semi-rigid slabs, cut to fit, friction-fit between studs/joists, minimal gaps.

Technical Specifications

Spec

Value

Product

Rockwool RW5 50 mm Acoustic Insulation Slab

Dimensions

1,200mm × 600mm

Thickness

50mm

Coverage per pack

~2.88 m² (4 slabs)

Nominal Density

~100kg/m³

Thermal Conductivity (λD)

0.034 W/m·K

Fire Classification

Euroclass A1 (non-combustible)

Material

Stone wool (rock mineral wool)

Typical Applications

Stud partitions, ceilings, floors, sound & fire control

If you require an extremely high performing, easy to handle multi-application insulation, this product is perfect for the job. If you require a high volume of this product – please contact us for a quote.