50mm Rockwool NyRock Cavity Slab 032 (15 Packs)

50mm Rockwool NyRock Cavity Slab 032 is a stone wool insulation slab designed for both full-fill and partial-fill thermal insulation in masonry cavity walls.

Ideal for use in new construction, renovations, or extensions, these lightweight slabs are easy to handle, simple to install, and ensure a precise fit against blockwork.

Manufactured with advanced patented technology, 50mm NyRock Cavity Slab 032 features an enhanced fibre structure that increases the density of air pockets within each slab. This innovation delivers superior thermal performance compared to conventional stone wool products.

Key features include

1. Exceptional thermal conductivity of 0.032 W/mK.
2. Resistance to temperatures exceeding 1,000ºC, achieving the highest Euroclass A1 non-combustibility rating as defined by EN13501-1.
3. Convenient 455mm width, designed to align perfectly with standard vertical wall tie spacings, ensuring tight, seamless joints with adjacent slabs.

Product specification

• Brand: NyRock
• Product Type: Rockwool NyRock Cavity Slab 032
• Thickness: 50mm
• Size of slab: 455mm x 1200mm
• Pack quantity: 8 Slabs per pack
• Pallet Quantity: 15 packs / Pallet
• Pack Coverage: 4.37 m2
• Pallet Coverage: 65.52 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: 50mm Rockwool NyRock Cavity Slab 32 is a high-performance stone wool insulation specifically designed for masonry cavity wall constructions. It offers exceptional thermal insulation, enhancing energy efficiency and minimizing heat loss through external walls.

With a Euroclass A1 non-combustible fire rating, 50mm NyRock Cavity Slab 32 significantly improves building fire safety, making it ideal for residential, commercial, and high-risk applications. Its moisture-resistant and water-repellent properties prevent water ingress while allowing the cavity to remain breathable.

Lightweight and easy to install, the slabs fit securely between wall ties, providing seamless insulation coverage that enhances the comfort, safety, and energy performance of the building.

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 a reaction to fire classification of A1, as defined in EN13501-1. NyRock Cavity Slab 032 is suitable for use in building of every purpose group, also acting as an effective cavity barrier when tightly fitted between masonry leaves where an insulated wall connects with an uninsulated wall cavity.

Acoustic performance

The non-directional fibre orientation and density of stone wool means that sound waves are trapped, and vibrations dampened which can significantly reduce outside sources of noise when used in an external wall.

50mm Rockwool insulation retains its shape and thickness for the lifetime of the building, which means it performs acoustically decade after decade.

Info

Have a browse of our Rockwool Products stock and filter by thickness or coverage on the left-hand side of the page. If you’d like to talk through the suitability of some products for your project, or get a quantity discount quotation please call us by phone on +4402039519012 , email sales@insulationstoreonline or Live Chat - Lowest UK Rockwool Insulation Prices.