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544 Polythene Enclosed and Flanged Glass Fibre Roll

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

Uniclass 2015

Pr_25_57_06_53 Mineral wool insulationPrimary


P10/10 Loft insulation

P10/125 Insulation laid between ceiling ties/ joists

P10/135 Insulation laid across ceiling ties/ joists

P10/140 Insulation fitted between rafters

P10/15 Insulation fitted between rafters

P10/190 Insulation fitted between studs

P10/220 Sound insulation within timber framed separating wall

P10/240 Insulation fitted between floor joists

P10/250 Insulation supported between floor joists

P10/40 Insulation fitted between studs

P10/45 Insulation laid between floor joists

P10/50 Insulation supported between joists

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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