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MayplasBlack Glass Cloth Faced Glass Fibre Roll is designed for the acoustic internal lining of air handling equipment and heating and ventilation ductwork.


  • Non combustible.
  • Black glass cloth facing.
  • 20 kg/m³ density glass fibre.
  • Excellent insulation performance.

General information
Uniclass 2015
Pr_80_77_76_54 Mineral wool pipe section insulationPrimary

S90/55 Insulation to pipelines

S90/570 Insulation to pipelines

T90/450 Insulation to pipelines to control heat loss

T90/58 Insulation to pipelines to control heat loss

Specification data - Mineral wool pipe section insulation
Product Reference

621 Black Glass Cloth Faced Glass Fibre Roll


25 mm

50 mm

Product Options

Technical data:

  • Nominal density: 20 kg/m³.
  • Thermal conductivity: 0.035 W/mK.
  • Fire rating of base fibre (to BS EN 13501-1): Classified to Euroclass A1.

BCO Foil Facing:

  • Aluminium foil/ glass fibre scrim/ polyethylene laminate.
  • Moisture vapour resistance: 1710 MNs/g.
  • Class 1 surface spread of flame to BS EN 476-7.
  • Class 0 to the Building Regulations (E&W) 1991.

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