Manufacturer Spotlight: ROCKWOOL® NyRock® Cavity Slab 032

Manufacturer Spotlight: ROCKWOOL® NyRock® Cavity Slab 032

Apr 3, 2024 |NBS |2 Minute Read

We caught up with James Francis, Product Manager at ROCKWOOL UK, to find out more about the NyRock® Cavity Slab 032, which is now available on NBS Source. 

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ROCKWOOL is a leading manufacturer of sustainable stone wool insulation products and have been manufacturing in the UK for over 40 years. 

NyRock® Cavity Slab 032 is a low lambda, non-combustible stone wool insulation slab for full and partial fill masonry cavities that enables a thinner wall construction. Suitable for use in new builds, renovations or extensions, the lightweight slabs are easy to handle and simple to install providing an accurate fit against the blockwork. 

Manufactured using patented NyRock technology, NyRock Cavity Slab 032 has a more efficient fibre structure that increases the density of air pockets trapped within each slab. This results in a thermal conductivity value of 0.032 W/mK, a 13% improvement over our standard stone wool cavity slab[1]

As with all ROCKWOOL stone wool insulation, NyRock Cavity Slab 032 is fire resilient and can withstand temperatures in excess of 1000°C while achieving the highest Euroclass A1 non-combustible reaction to fire classification. 

Having undergone an extensive testing programme, NyRock Cavity Slab 032 is suitable for new build, renovations and extensions. 

  • BBA certified for full fill applications (in thicknesses of 100 - 200mm), other than in very severe exposure zones with fair-faced masonry. BBA Certificate 22/6252. 
  • BBA certified for partial fill applications (in thicknesses of 50 -200mm). BBA Certificate 22/6252. 
  • Manufactured in accordance with BS EN 13162:2012+A1:2015 Thermal insulation products for buildings. Factory made mineral wool (MW) products. 
  • Manufactured under ISO 14001 Environmental Management Systems, and ISO 9001 Quality Management Systems. 
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"The team at NBS have been very supportive and have demonstrated all of NBS Source’s unique features and benefits. It’s important that we supply the industry with the latest product information, and to ensure that the information is compliant to industry standards. NBS helps us achieve this."

Further, NyRock Cavity Slab 032 comes in 455mm widths to suit standard vertical wall tie spaces and achieves a closely knitted joint with adjacent slabs, without the need for taping the joints. This helps eliminate gaps allowing for continuity of insulation across the cavity. Stone wool’s high pliability also negates the need for impractical levels of precision cutting on-site, minimising the margin for error and the likelihood of thermal bridging. 

“NBS were early adopters of digital construction technology, so it seemed like a logical partnership to contain our product information on one easy to use platform in the form of NBS Source,” said ROCKWOOL UK’s Product Manager, James Francis. 

“NBS has long been a complement to our own specification support and resources, which includes technical tools on our website and CPDs, for example.” 

You can find all the technical and performance information you’ll need to specify NyRock Cavity Slab 032 via NBS Source. 

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[1] 13% improvement is based on the 0.37 lambda value of standard ROCKWOOL Full Fill Cavity Batt 

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