DriStud RU24 Roof Underlay

Vapour Permeable Synthetic Self Support Roof Underlay (Non Fire Retardant)

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Overview

DriStud RU24 is non-fire retardant self-supporting black faced synthetic roofing underlay.

It is a tri-laminate consisting of engineered synthetic materials and it is water resistant and vapour permeable. DriStud RU24 must not be installed where fire retardant roof underlay is specified.

It is intended for use on new and existing buildings in wind zones up to and including ‘Extra High’, as defined in NZS 3604:2011.

Documents

TitleDownload
CodeMark Certificate - RU22, RU24, FRU36 & FRU38 Roof Un... DownloadPreview
Installation Guide - DriStud RU24 DownloadPreview
DriStud RU24 Roof Underlay - Product Technical Statement DownloadPreview
DriSpace Underlay and Foil Application Guide DownloadPreview
TCL Hunt Warranty for DriSpace Products DownloadPreview

Technical Properties

PropertyStandardValue
Weight (m²)170 ±5 g/m2
Flammability indexAS1530.2-19939
Fire RetardantNo
Water Vapour ResistanceASTM E96 Procedure B0.303 MNs/g; Pass
AbsorbancyAS/NZS 4201: Part 6Requirement ≥150 g/m²; Pass
Air ResistanceBS ISO 5636-5:2003≥0.1 MN s/m³; Pass
Air BarrierYes
Water ResistanceAS/NZS 4201.4:1994≥100mm H₂O; Pass
Resistance to UV exposureASTM G1557 days
SupportedSelf Supporting
Roof Pitch˃3°

Available Sizes

ROLL SIZES
1250mm x 40.0m (50m²)
1500mm x 40.0m (60m²)
2200mm x 50.0m (110m²)
RU24 - Roof Underlay
287239460
270561457

Features

  • CodeMark™ Certified
  • Self-supporting
  • Can be installed over timber and steel roof framing
  • Breathable & Absorbent
  • UV exposure: 7 days
  • Direct fix with absorbent and non-absorbent cladding including metal
  • Low cost synthetic underlay with FR Index of 9 (Non Fire Retardant)
  • Easier and Quicker to install with 150mm laplines

DriStud Products

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