Rockwool Ductslab - Duct Insulation Slab 600 x 1000mm

DuctSlab is suitable for use on the following construction types:

• Square and rectangular ventilation ducts

What is ROCKWOOL DuctSlab?

ROCKWOOL DuctSlab is a semi-rigid, non-combustible stone wool insulation slab designed for the thermal insulation of square and rectangular ventilation ductwork. It features a reinforced aluminium foil facing for added protection and durability.

What can ROCKWOOL DuctSlab be used for?

DuctSlab is primarily designed for insulating square and rectangular ventilation ducts, including air conditioning, warm air and extract duct systems.

Is ROCKWOOL DuctSlab fire resistant?

Yes. ROCKWOOL DuctSlab is classified as Euroclass A1, meaning it is classified as non-combustible in accordance with BS EN 13501-1:2018.

What is the thermal conductivity of ROCKWOOL DuctSlab?

ROCKWOOL DuctSlab has a declared thermal conductivity of 0.035 W/mK. Its thermal performance varies with temperature, so the appropriate insulation thickness should be selected according to the specific application.

What temperature can ROCKWOOL DuctSlab withstand?

DuctSlab is suitable for service temperatures of up to 230°C. ROCKWOOL recommends specifying the insulation thickness so that the outer surface temperature does not exceed 80°C to help maintain the bond strength of the aluminium foil facing.

Does ROCKWOOL DuctSlab help reduce condensation?

Yes. When correctly specified and installed in accordance with BS 5422:2023, DuctSlab can help meet thermal requirements and prevent condensation forming on chilled ductwork.

Does ROCKWOOL DuctSlab provide acoustic insulation?

Stone wool insulation can help reduce noise transmission through building services and HVAC systems. ROCKWOOL identifies DuctSlab among its products that can contribute to acoustic performance in building services applications.

What is the difference between ROCKWOOL DuctSlab and DuctWrap?

DuctSlab is a semi-rigid insulation slab designed for square and rectangular ductwork, while DuctWrap is a flexible insulation roll primarily intended for circular ductwork and water storage tanks.

Does ROCKWOOL DuctSlab have an aluminium foil facing?

Yes. DuctSlab has a reinforced aluminium foil facing, which provides a durable surface finish and helps protect the insulation.

What sizes is ROCKWOOL DuctSlab available in?

The current UK technical datasheet lists DuctSlab in 40mm and 50mm thicknesses, with a width of 600mm and length of 1000mm. Always check the specific product variant available before ordering.

How is ROCKWOOL DuctSlab installed?

DuctSlab should be installed in accordance with ROCKWOOL's installation guidance and the requirements of the particular ductwork system. Correct fixing, jointing and sealing are important to achieve the intended thermal and condensation-control performance.

Is ROCKWOOL DuctSlab suitable for commercial and industrial buildings?

Yes. It is suitable for ventilation and HVAC ductwork applications across a range of building types, including commercial, industrial, healthcare, educational and other large buildings where effective thermal and fire-resilient duct insulation is required.

Is ROCKWOOL DuctSlab CE marked?

Yes. ROCKWOOL DuctSlab is CE marked in accordance with EN 14303:2009+A1:2013.