Rockwool RWA45 25mm Insulation Slab

Rockwool RWA45 Acoustic Insulation Slab delivers exceptional thermal, acoustic, and fire protection across diverse building projects. Manufactured from premium resin-bonded stone wool, these 25mm slabs provide flexible thickness and density options to suit your specific construction needs, with optional specialist facings available upon request.

Perfect for general construction applications, these 25mm RWA45 slabs work brilliantly for acoustic and thermal insulation in partition walls, ceilings, floors, and roofs. The versatile nature of this product makes it straightforward to incorporate throughout your building project.

Achieving a Euroclass A1 non-combustible rating, the RWA45 25mm slab offers superior fire safety performance. Installing this material in ceilings, walls, and floors helps compartmentalise spaces effectively, slowing fire spread and reducing potential damage.

The RWA45 25mm rockwool insulation slabs feature a Lambda value of 0.035 W/mK and come in three standard thicknesses from 25 to 100mm.

Product specification

• Brand: Rockwool®
• Model: 25mm RWA45
• Thickness: 25mm
• Length: 1200mm
• Width: 600mm
• Dimensions: 1,200mm x 600mm x 25mm
• Board Coverage: 0.72m2
• Pack Coverage: 11.52m2
• Pack Quantity: 16
• R-Value: 0.70m2K/W
• Thermal Conductivity: 0.035W/mK
• Density: 45kg/m3
• Colour: Light brown
• Material: Stone wool
• Profile: Square Edge
• Water repellent: Water Repellent
• Water vapour resistance: Negligable
• Building Regulations: Class '0'
• Fire performance: Euroclass A1 (non-combustible)
• Finish: Unfaced
• Shipping method: Articulated Vehicle ǀ Courier
• Applications: Walls ǀ Ceilings ǀ Floors ǀ Roofs
• Foil faced: No
• ETA Notification: Yes
• Features: Fire protection ǀ Acoustic ǀ Thermal
• Manufacturer: Rockwool Prorox SL920®

Made To Order Facings

Black or white tissue facings, plus aluminium foil options, are available to order subject to production feasibility and minimum order thresholds. Contact our team at sales@insulationbee.co.uk or ring 02038839057 to discuss your requirements.

Key Features

• Exceptional thermal, acoustic, and rockwool fire insulation capabilities.
• Non-combustible Euroclass A1 classification.
• Simple to handle, cut, and fit.
• Maximum fire resistance rating.
• Long-lasting insulation performance.
• Retains performance throughout the building's lifespan.
• Water-repellent properties.
• Guards against moisture accumulation, dampness, and decay.
• Superior sound insulation absorption for effective noise reduction.
• Thermal conductivity (λ - lambda value) of 0.035W/mK.
• CFC and HCFC-free formulation.
• ODP-free.
• GWP-free.

Versatile insulation slabs for a wide range of building applications

25mm Rockwool RWA45 Slabs suit numerous general building applications, delivering acoustic, thermal, and fire safeguarding for walls, ceilings, floors, and roofs. Available in multiple thicknesses and densities from 45 to 140 kg/m3, these 25mm Rockwool slabs can be upgraded with black or white tissue facing or foil facing on one or both sides, subject to production compatibility.

Applications

• Ground floors
• Internal floors
• Separating floors
• Pitched roofs at rafter level
• Internal walls
• Partitions
• Steel frame walls
• Timber frame walls

Fire Performance

ROCKWOOL RWA45 25mm Slabs demonstrate non-combustible properties, achieving an A1 reaction to fire classification under EN13501-1 standards.

Acoustic Performance

The random fibre structure and density of stone wool work together to absorb sound waves and dampen vibrations effectively. This makes it particularly useful for reducing external noise when fitted in external walls.

Info

Browse our full Rockwool Insulation range and use the left-hand filters to sort by thickness or coverage. For advice on product suitability for your project or to request a bulk discount quote, contact us on +4402038839057, email sales@insulationbee.co.uk or use Live Chat - we offer competitive UK Rockwool stone wool insulation pricing.