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Thermafiber® RainBarrier® ci High Compressive (80) | Owens Corning Insulation
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Thermafiber® RainBarrier® ci High Compressive (80)

Why choose mineral wool insulation?

Thermafiber® RainBarrier® ci High Compressive (80) continuous insulation boards are lightweight insulation products designed to support cladding attachment with minimal penetrations. The use of ThermaCrimp™ technology allows for high compressive strength insulation while providing thermal efficiency, non-combustibility, water repellency, and flexibility when working with uneven substrates. RainBarrier® ci High Compressive (80) is a mineral wool continuous insulation product that can be used as insulation behind cladding systems, including combustible and open-joint assemblies.

Key Features of Thermafiber® RainBarrier® ci High Compressive (80):

  • Lightweight Design - More than 10% lighter than the leading competitor’s product.
  • Lightweight Cladding Support – Designed for walls with lightweight cladding materials such as vinyl siding, metal siding, wood siding, and FRP panels.
  • Flexible Installation - Tolerates substrate irregularities for easier application.
  • Long-Term Durability - Maintains performance without deterioration over time.
  • Acoustic Support - Enhances sound control for improved noise reduction.
  • Green Building Contribution - Helps meet requirements for LEED®, Green Globes®, and other green building certifications.
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Thermafiber® RainBarrier® ci High Compressive (80)

Performance Attributes

Thermafiber® RainBarrier® ci High Compressive (80) mineral wool continuous insulation offers key performance attributes for exterior wall assemblies. Its lightweight insulation design makes it easier to install exterior wall materials without compromising the insulation layer. Installed as insulation behind cladding systems, this mineral wool continuous insulation product helps improve energy conservation, manage moisture vapor, and maintain fire resistance (up to temperatures above 2,000°F) over time.

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High Compressive Strength

Supports cladding attachment system with minimal penetration through continuous insulation

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Lighter in Weight

More than 10% lighter in weight than the leading competitor’s product

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Energy Conservation

Minimum 70% recycled content. Contributes to credits in several green building programs such as LEED® and Green Globes®

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Non-combustible

Non-combustible and non-deteriorating

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Fire Resistant

To temperatures above 2,000°F (1,093°C)

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Vapor Permeable

Technical Information

Physical Properties

Property

Test Method

Value

Compressive StrengthASTM C165475 lbs/ft² @ 10% deformation

Corrosion of Steel, Aluminum, and Copper

ASTM C665

Pass

Stress Corrosion – Austenitic Stainless Steel

ASTM C795

Pass

CombustibilityASTM E136Non-combustible
Water Vapor PermeanceASTM E9624 perm
Water Vapor SorptionASTM C1104Sorption <0.1% by volume
Linear ShrinkageASTM C356<2% @1,200°F (650°C)
Surface Burning CharacteristicsASTM E84

Flame Spread 0,
Smoke Developed 0

Fungi-ResistanceASTM C1338Complies

Odor

ASTM C1304Complies

Applications

This mineral wool continuous insulation product is ideal for lightweight exterior walls often found in hotels, schools, and retail buildings with simple siding or metal panels. This lightweight insulation can be installed in wall systems that use wall coverings made from materials that can burn or designs that leave small gaps between panels.

  • Facades
  • Facades > Bricks
  • Facades > Composite Board
  • Facades > Metal
  • Facades > Stone
  • Facades > Tiles
  • Facades > Wood
  • Walls

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