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Thermafiber® RainBarrier® ci High Compressive Max (140) | Owens Corning Insulation
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Thermafiber® RainBarrier® ci High Compressive Max

Why choose mineral wool insulation?

Thermafiber® RainBarrier® ci High Compressive Max continuous insulation boards are designed for use in wall systems. These mineral wool insulation boards to support cladding attachment with minimal penetrations. The use of ThermaCrimp™ technology delivers the benefits of high compressive strength insulationallows for superior compressive strength while providing thermal efficiency, non-combustibility, water repellency, and flexibility when working with uneven substrates. RainBarrier® ci High Compressive Max can be used behind heavy-weight cladding types, — including combustible and open-joint assemblies.

Key Features of Thermafiber® RainBarrier® ci High Compressive (140):

  • Heavy-Duty Cladding Support – Built for heavy exterior walls including conventional stucco, thin stone, and terracotta masonry cladding systems.
  • Durability - Non-combustible and non-deteriorating
  • Acoustic Support - Enhances acoustic performance.
  • Green Building Contribution - Helps conserve energy and reduce greenhouse gas emissions.
Download Data Sheet
Thermafiber® RainBarrier® ci High Compressive Max

Performance Attributes

RainBarrier® ci High Compressive Max (140) meets the demands of complex wall assemblies and high-exposure environments, offering resistance to fire, moisture, and long-term wear, which is critical for durability, safety, and long-term performance in exterior wall designs.

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High Compressive Strength

Supports cladding attachment system with minimal penetration through continuous insulation

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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

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Vapor Permeable

Helps walls dry out by letting vapor move through, reducing the risk of trapped moisture.

Technical Information

Physical Properties

Property

Test Method

Value

Compressive StrengthASTM C1651,296 lbs/ft² @ 10% deformation

Corrosion of Steel, Aluminum, and Copper

ASTM C665

Pass

CombustibilityASTM E136Non-combustible
Water Vapor PermeanceASTM E96

57 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
Chemical analysis for CI, Fl, Na+, SiO4⁴

ASTM C871/
ASTM C795

Results fall within acceptability limits of ASTM C795

Applications

This mineral wool insulation product is designed for exterior wall assemblies in buildings that carry heavy façade loads, such as hospitals, high-rises, and other large-scale commercial or institutional structures. This continuous wall insulation is recommended for use behind cladding systems, such as conventional stucco, thin stone, and terracotta masonry.

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

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