Peppard building Supplies

Phone 0118 972 2028


Rockwool ProRox thermal and acoustic slabs



in stock for collection


Delivery: we'll get it to site when you need it, contact us for latest schedules

Product description

Peppard Building Supplies in Reading now stocks ProRox SL 920 (previously known as RWA45):


It is a strong, but flexible, stone wool board that is ideal for the thermal insulation of horizontal and vertical planes. This product has anA1 fire classification in accordance with EN 13501–1 and complies with the definition of non–combustible in accordance with UK Building Regulations


This innovative range is made from ‘stone wool’, using naturally occurring, volcanic diabase rock. This makes it durable and resistant to shrinking, moving or crumbling.


As the rock is a naturally non–combustible material, it offers added peace of mind in the event of a fire. It is also water resistant so (once dry) will perform as before after a leak or flood.


Key features

Thermal Properties

The thermal conductivity for the ROCKWOOL® ProRox Slab Range is : ProRox SL 920 (RWA4) = 0.035W/mK

Acoustic Performance

These products can be used to enhance the acoustic performance of a building. For more information about absorption please refer to the product datasheet.

Fire Properties

European Fire Classification of A1

Performance and Properties

ROCKWOOL® ProRox Slabs conform to: BS EN 13162: 2001. Thermal insulation products for buildings – factory made mineral wool (MW) products

Water Repellency

The ROCKWOOL® Slab Range is highly water repellent. Where it is necessary to maintain water repellence subsequent to heating at elevated temperatures, the use of WRG grade slabs is recommended.