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A 10 kg/m³ density glass fibre roll fully enclosed and flanged in 500 gauge polythene, designed for use in thermal and acoustic applications where the requirement is for fully enclosed glass fibre with fixing flanges, typically between studwork, rafters and ceiling joists.

The fixing flanges of Mayplas 544 are designed to be stapled to the underside of the rafters or ceiling joists.


  • To suit 600 mm centres.
  • 60–200 mm thicknesses.
  • Vapour barrier to BS 2972.
  • Loose fibres enclosed by polythene.

General information
Specification data - Mineral wool insulation
Product Reference

544 Polythene Enclosed and Flanged Glass Fibre Roll


60 mm

Thermal resistance 1.35 m²K/W.

80 mm

Thermal resistance 1.80 m²K/W.

100 mm

Thermal resistance 2.25 m²K/W.

150 mm

Thermal resistance 3.40 m²K/W.

170 mm

Thermal resistance 3.85 m²K/W.

200 mm

Thermal resistance 4.50 m²K/W.

Standard product features

Roll width:

2 x 570 mm.

Glass fibre fire rating (BS 476-4:


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