ROCKWOOL Expands Flat Roof Range with Non-Combustible Upstand Board

Rockwool Hardrock UB34

In its latest step to help specifiers and contractors mitigate fire risk in the fifth façade, ROCKWOOL has launched HARDROCK UB34, a non-combustible insulation solution specially designed for parapet walls and upstands on flat roofs.

ROCKWOOL HAS CREATED UB34 to provide a robust, thermally efficient upstand insulation board that is also non-combustible in case of fire. Combining a dense 50mm slab of ROCKWOOL stone wool insulation bonded to a rigid 6mm fibre cement board, the system is impact and weather resistant.

Non-Combustible HARDROCK UB34

Thanks to its stone wool core, HARDROCK UB34 has been fully tested and classified as Euroclass A2-s1, d0. This means the product is suitable for use on buildings over 18 metres that are affected by the ban on combustible materials.

Will Wigfield, Product Manager – Building Envelope at ROCKWOOL UK said: “UB34 helps specifiers and contractors mitigate fire risk by providing a durable, non-combustible insulation solution compliant with the latest guidance for buildings over 18m,”

He continued: “A purpose designed solution, it’s easy to install – and its stone wool core provides an excellent thermal performance.”

HARDROCK UB34 is manufactured with a ROCKWOOL base slab which has thermal conductivity of 0.034 W/mK, helping to reduce thermal bridging through roof upstands. The board is compatible with a range of flat roof systems, including single-ply and inverted.

HARDROCK UB34 is the latest addition to ROCKWOOL’s HARDROCK range of flat roof insulation solutions.

For more information, visit the ROCKWOOL website here.

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