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ROCKWOOL® Ductwrap
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In order to regulate temperature within heating, ventilation and air conditioning systems insulation must be applied. ROCKWOOL Ductwrap can provide the thermal insulation to these HVAC systems as well as cold water storage, feed and expansion tanks. This solution is acoustically absorbent and A1 non-combustible to deliver the highest level of fire performance.


Ductwrap is a lightweight and flexible insulation roll faced with reinforced aluminium foil.

Ductwrap is suitable for both circular and rectangular ductwork. This solution is recommended for service temperatures of up to 230˚C. The thermal insulation solutions are often applied to air conditioning, warm air and extractor ducts, located in plant rooms, boiler houses or externally.

In addition to its thermal properties, the mineral wool insulation delivers acoustic performance which can be desirable for applications to ducts that carry gases, fluids or particle solids at high velocities. The use of ROCKWOOL Ductwrap can also significantly improve the level of environmental sound, for a far more pleasant working environment.

Features and benefits:

  • Acoustically absorbent.
  • Non-combustible.
  • Water repellent.
  • Chemically inert.
  • Easy to handle and install.
  • CE marked in accordance with BS EN 14303.
  • The product has been authorized for use in LUL surface and sub-surface premises when installed in accordance with the data sheet.

General information



Reinforced aluminium foil.


Mineral fibre

Ductwrap is a lightweight, flexible insulation roll, faced with reinforced aluminium foil.




4000 mm

5000 mm

6000 mm


1000 mm


25 mm

40 mm

50 mm


Pr_80_77_76_53 Mineral wool duct slab insulationPrimary


T90/390 Feed and expansion cisterns

U90/490 Site-applied insulation to ductwork

Specification data - Mineral wool duct slab insulation


To BS EN 14303; ISO 14001.


Insulation roll.

Thermal conductivity

0.034 W/mK.


Aluminium foil faced.

Reaction to fire classification

To 13501-1, Euroclass A1.


Insulation thickness (minimum)

40 mm.


Installing foil faced mineral wool insulation.

Nominal density

45 kg/m³.

Water vapour resistance

1000 MNs/g.



40 x 1000 x 4000 mm.

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