75mm Rockwool NyRock Cavity Slab 032

75mm Rockwool NyRock Cavity Slab 032 is a stone wool insulation slab engineered for both full-fill and partial-fill thermal insulation applications in masonry cavity walls. Perfect for new builds, refurbishments, and extensions, these lightweight slabs deliver straightforward installation and reliable performance against blockwork surfaces.

Engineered using advanced patented technology, 75mm NyRock Cavity Slab 032 incorporates an enhanced fibre structure that maximises air pocket density within the material. This breakthrough delivers outstanding thermal performance that surpasses standard stone wool alternatives.

Key features include

1. Outstanding thermal conductivity of 0.032 W/mK.
2. Withstands temperatures above 1,000ºC, achieving the highest Euroclass A1 non-combustibility classification per EN13501-1.
3. Standard 455mm width aligns with conventional vertical wall tie spacing, creating tight, uniform joints between adjacent slabs.

Product specification

• Brand: NyRock
• Product Type: Rockwool NyRock Cavity Slab 032
• Thickness: 75mm
• Size of slab: 455mm x 1200mm
• Pack quantity: 4 Slabs per pack
• Pallet Quantity: 20 packs / Pallet
• Pack Coverage: 2.18 m2
• Pallet Coverage: 43.68 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

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

Cavity Walls: 75mm Rockwool NyRock Cavity Slab 032 is a premium stone wool insulation engineered specifically for masonry cavity wall systems. It delivers exceptional thermal insulation, boosting energy efficiency and reducing heat loss through external building envelopes.

With Euroclass A1 non-combustible fire certification, 75mm NyRock Cavity Slab 032 substantially enhances building fire safety performance, making it the ideal choice for residential, commercial, and high-risk environments. Its moisture-resistant and water-repellent composition guards against water penetration whilst maintaining cavity breathability.

Simple to fit and lightweight, the slabs lock securely between wall ties, delivering continuous insulation coverage that strengthens building comfort, safety, and thermal efficiency.

Thermal performance

Thermal conductivity rating of 0.032 W/mK compliant with BS EN 13162:2012 +A1:2015.

Fire performance

NyRock Cavity Slab 032 is non-combustible, achieving an A1 reaction to fire classification under EN13501-1. NyRock Cavity Slab 032 performs effectively in buildings of all purpose groups, functioning as a reliable cavity barrier when tightly positioned between masonry leaves where insulated walls connect with uninsulated cavities.

Acoustic performance

The random fibre orientation and density characteristics of stone wool trap sound waves and dampen vibrations, substantially lowering external noise transmission when integrated into external wall systems.

75mm Rockwool insulation maintains its dimensional stability and thickness throughout the building's lifespan, guaranteeing consistent acoustic performance year after year.

Info

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