ISOGARD HD Cover Board is a 12.7 mm high-density polyisocyanurate (PIR) foam roof board with a mineral-coated fibreglass facer, designed to protect insulation in flat roofing systems and improve load distribution, thermal performance, and durability.

  • High-density PIR foam board for flat roof protection and insulation

  • Weighs 5 kg per 1.22 m x 2.25 m board for easy handling

  • Compressive strength over 800 kPa, 5–6 times higher than standard PIR boards

  • Resistant to mould, moisture, and extreme weather

  • Quick to cut and install, reducing labour time and costs

  • Improves fire performance of roofing systems

  • Contains over 9% recycled content and low GWP, zero ODP

Applications

  • Flat roof refurbishment and recovery projects

  • New build flat roofing systems

  • Commercial and residential roofing

  • Use under single-ply roofing membranes

  • Areas requiring enhanced impact and fire resistance

Dimensions

Thickness 12.7 mm

Board size 1.22 m x 2.25 m

Weight 5 kg per board

Performance

  • Compressive strength over 800 kPa

  • Highest thermal performance among 12 mm rigid cover boards

  • Superior wind uplift resistance

Materials

  • High-density closed-cell PIR foam

  • Mineral-coated fibreglass facer

Installation

  • Boards cut and fitted to roof penetrations and projections

  • Install with approved fasteners, plates, or adhesives

  • Apply only as many boards as can be covered with membrane in one day

Sustainability

Over 9% post-consumer and post-industrial recycled content

HCFC-free blowing agent with low GWP and zero ODP