125mm Rockwool NyRock Cavity Slab 032

125mm Rockwool NyRock Cavity Slab 032 is a stone wool insulation slab engineered for complete and partial-fill thermal insulation solutions in masonry cavity walls.

Perfect for new builds, refurbishment projects, and building extensions, these lightweight slabs deliver straightforward installation with excellent handling characteristics and guaranteed alignment with blockwork surfaces.

Engineered using cutting-edge patented technology, 125mm NyRock Cavity Slab 032 incorporates an optimised fibre matrix that maximises air pocket density throughout the slab. This advanced design provides outstanding thermal performance that surpasses standard stone wool alternatives.

Key features include

1. Outstanding thermal conductivity rating of 0.032 W/mK.
2. Superior heat resistance beyond 1,000ºC, achieving the highest Euroclass A1 non-combustibility classification per EN13501-1.
3. Standard 455mm width perfectly matched to typical vertical wall tie spacing, delivering consistent, flush joints between adjacent slabs.

Product specification

• Brand: NyRock
• Product Type: Rockwool NyRock Cavity Slab 032
• Thickness: 125mm
• Size of slab: 455mm x 1200mm
• Pack quantity: 3 Slabs per pack
• Pallet Quantity: 15 packs / Pallet
• Pack Coverage: 1.64 m2
• Pallet Coverage: 24.57 m2
• Insulation Application: Acoustic, External Wall, Wall
• Product Type: Insulation
• Reaction to fire (Euroclass): Euroclass A1
• Thermal conductivity: 0.032 W/mK
• Water vapour resistance: 5.9MNs/gm
• GWP: Zero
• ODP: Zero
• Materials: Stone wool
• Commercial Or Domestic Use: Both
• Application: Exterior
• Applicable Standards: CE & UK CA Marked
• Thermal Conductivity: 0.032 W/mK

Applications

Appropriate for partial fill insulation only: 50mm, 75mm and 85mm. Appropriate for full and partial fill applications: 100mm, 125mm, 150mm, 160mm and 200mm.

Cavity Walls: 125mm Rockwool NyRock Cavity Slab 32 delivers high-performance stone wool insulation specifically engineered for masonry cavity wall systems. It provides exceptional thermal insulation, significantly boosting energy efficiency and reducing heat transmission through external walls.

Featuring a Euroclass A1 non-combustible fire classification, 125mm NyRock Cavity Slab 32 substantially enhances building fire safety, making it the preferred choice for residential, commercial, and specialist applications. Its moisture-resistant and water-repellent composition prevents water penetration whilst maintaining cavity breathability.

Simple to install and lightweight, the slabs lock securely between wall ties, creating continuous insulation coverage that boosts building comfort, fire safety, and thermal efficiency.

Thermal performance

Thermal conductivity value of 0.032 W/mK in accordance with BS EN 13162:2012 +A1:2015.

Fire performance

NyRock Cavity Slab 032 is non-combustible, achieving an A1 reaction to fire classification as defined in EN13501-1. NyRock Cavity Slab 032 is appropriate for use in buildings of all purpose groups, and functions as an effective cavity barrier when tightly positioned between masonry leaves where an insulated wall connects with an uninsulated cavity.

Acoustic performance

The random fibre orientation and density characteristics of stone wool effectively capture sound waves and dampen vibrations, which substantially reduces external noise transmission when installed in external walls.

125mm Rockwool insulation maintains its dimensional stability and thickness throughout the building's lifespan, ensuring consistent acoustic performance year after year.

Info

Browse our comprehensive Rockwool Products range and refine by thickness or coverage using the left-hand filters. For expert guidance on product suitability for your specific project, or to request a volume discount quotation, contact us by phone on +4402039519012, email sales@insulationbee.co.uk, or use our Live Chat service - Lowest UK Rockwool Insulation Prices.