100mm Rockwool RWA45 Acoustic Sound Insulation Slab (2.88m2/Pack)

Description

Product Overview
Stone wool insulation slab, measuring 100mm in thickness, designed for use in internal partitions, floors, and roof applications.

Manufactured from high-density stone wool, the slab combines excellent acoustic absorption with reliable thermal insulation and inherent fire resistance.

Its rigid composition allows a close friction fit between studs or joists, preventing gaps that could compromise performance.

Non-combustible and classified as Euroclass A1, the slab contributes to improved fire safety within the building fabric. Its fibre structure also provides effective sound reduction, limiting noise transfer between rooms and floors.

At 100mm thick, this slab is the most widely specified option in the RWA45 range.

It is particularly suited to stud walls and intermediate floors, where its depth provides robust sound insulation alongside strong thermal and 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.
100mm thickness: Delivers maximum thermal and acoustic performance in the RWA45 range.

Applications
Stud partitions with maximum acoustic demand: Provides the highest level of airborne sound reduction.
Intermediate floors with deep joists: Delivers top performance for separating floors.
Ceilings beneath noisy spaces: Best solution for reducing sound transfer.
Drylined partitions and linings: Maximises fire, thermal, and acoustic ratings.

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.