RAINBARRIER MINERAL WOOL CONTINUOUS INSULATION SYSTEM GUIDE ® Standards and Code Compliance, Installation, Attachment
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THERMAFIBER® RAINBARRIER® MINERAL WOOL CONTINUOUS INSULATION SYSTEM GUIDE Engineered with Owens Corning technical expertise and backed by building science, Owens Corning® Thermafiber® RainBarrier® mineral wool continuous insulation delivers buildings that perform without compromising design. Introduction ................................................................................................................................................................................. 4 Overview .................
INTRODUCTION Owens Corning® Thermafiber® RainBarrier® Mineral Wool Continuous Insulation (CI) As society demands more energy-efficient buildings, codes and builders are responding by increasing the R-value of the building enclosure. Given that the cavities of the standard framed walls typically used are already filled with insulation, the clear path forward to higher R-values is to add exterior insulation.
OVERVIEW Continuous Insulation (CI) Definition and Benefits What Is Continuous Insulation (CI)? ASHRAE 90.13 defines continuous insulation as insulation that is uncompressed and continuous across all structural members without thermal bridges other than fasteners and service openings. It is installed on the interior or exterior and to any opaque surface of the building envelope. ASHRAE Standard 90.
OVERVIEW Evolution of Continuous Insulation The Evolution of Energy Efficiency In the simplest terms, the exterior wall or shell provides protection from the weather or outside environmental conditions. It provides interior occupants protection from heat, cold, water, and the overall outside environment. It also provides protection from solar radiation, outside noise, fire, security, and aesthetics.
OVERVIEW Drivers of Continuous Insulation Striving for Continuous Efficiency Choosing the right insulation and placing it in the right location is becoming one of the most important decisions in design, construction, and retrofit, as insulation has a dramatic impact on the energy efficiency of a building. To design energy-efficient buildings that will meet stringent energy codes and performance expectations, the use of continuous insulation on the exterior of the building is critical.
OVERVIEW Drivers of Continuous Insulation Paths to Code Compliance There are three typical paths to compliance. Perhaps the most commonly known path is the prescriptive method. In this method, the chart previously illustrated is used to select the construction type and climate zone, which will prescribe the R-value with continuous insulation required as well as overall assembly R-value.
PRODUCT SELECTOR Thermafiber® RainBarrier® Mineral Wool Continuous Insulation Portfolio To realize the greatest thermal benefits of exterior continuous insulation, it must be installed in a way to minimize heat losses through the insulation layer. Owens Corning offers a portfolio of Thermafiber® RainBarrier® mineral wool continuous insulation products to address the growing need for continuous insulations to be used in a variety of applications and façade types.
PRODUCT SELECTOR Technical Data, Performance Attributes, and Attachment Methods* PRODUCT TECHNICAL DATA6 ACTUAL DENSITY “K” @ 75° [24°C] BTU IN./HR. SQ. FT. °F “R” VALUE PER INCH OF THICKNESS7 “U” VALUE PER INCH OF THICKNESS Owens Corning® Thermafiber® RainBarrier® 45 4.5 pcf 0.23 4.3 0.23 Owens Corning Thermafiber RainBarrier HD 6 pcf 0.23 4.3 0.23 Owens Corning® Thermafiber® RainBarrier® vv™ 45 4.5 pcf 0.23 4.3 0.23 Owens Corning Thermafiber RainBarrier Dark™ HD 6 pcf 0.23 4.3 0.
RainBarrier® Product Comparision Product Type: PROPERTIES RAINBARRIER® 45 RAINBARRIER® HD RAINBARRIER® DARK™ 45 RAINBARRIER® DARK™ HD RAINBARRIER® HC (80) RAINBARRIER® HC PLUS (110) RAINBARRIER® HC MAX Semi-Rigid Board Semi-Rigid Board Semi-Rigid Board with Facer Semi-Rigid Board with Facer Rigid Sheathing Board Rigid Sheathing Board Rigid Sheathing Board Types IA, IB, II, III, IVA, IVB Types IA, IB, II, III, IVA, IVB Non-corrosive Non-corrosive Non-corrosive TEST METHOD Mineral Wool S
PRODUCT SELECTOR Cladding Attachment Owens Corning® Thermafiber® Products by Cladding Attachment MINERAL WOOL INSULATION CLADDING IS INSTALLED BETWEEN ATTACHMENT CLADDING ATTACHMENT PRODUCTS SEMI-RIGID HIGH COMPRESSIVE Owens Corning® Thermafiber® RainBarrier® 45 Owens Corning® Thermafiber® RainBarrier® ci High Compressive (80) Owens Corning® Thermafiber® RainBarrier® HD Owens Corning® Thermafiber® Rainbarrier® Dark™ 45 Owens Corning® Thermafiber® Rainbarrier® Dark™ HD 12 CLADDING ATTACHMENTS ARE IN
PRODUCT SELECTOR Cladding Weight for High Compressive Products Owens Corning® Thermafiber® Products by Cladding Weight HIGH COMPRESSIVE CLADDING ASSEMBLY CLADDING WEIGHT RainBarrier® ci High Compressive (80) For use where the cladding supports are installed outboard of the mineral wool insulation in light weight cladding assemblies. Light Weight Cladding < 5 lbs./sq.ft.
ATTACHMENT AND SUPPORT Common Support Methods Attachment Method Mineral wool insulation is installed between cladding attachments. RAINBARRIER® 45 & RAINBARRIER® DARK™ 45 RAINBARRIER® HD & RAINBARRIER® DARK™ HD Preferred Preferred9 Cladding attachments are fastened outboard of the mineral wool insulation. 9 RAINBARRIER® HIGH COMPRESSIVE PLUS (110) RAINBARRIER® HIGH COMPRESSIVE MAX Light Weight Cladding < 5 lbs./sq.ft. Medium Weight Cladding 5 lbs./sq.ft. to ≤ 10 lbs./sq.ft.
ATTACHMENT AND SUPPORT Common Support Methods MASONRY TIES CLIP AND RAIL SYSTEMS Various clips and wedges can be used with masonry ties to attach Owens Corning® Thermafiber® RainBarrier® insulation boards. Clip and rail systems are typically installed to the building structure or backup wall framing. The insulation is installed between the system components. Common or specialty ties can be used, as the semi-rigid mineral wool insulation will conform around the ties.
ATTACHMENT AND SUPPORT Fasteners General Fastener Guidance Without proper attachment, the thermal performance of the continuous insulation is compromised. Fasteners function to keep insulation flush with the substrate in a continuous fashion for the intended life of the structure. Fastener type and specifications depend on the material receiving the attachment. For wood framing or sheathing, exterior grade10 (stainless steel or galvanized) screws or impaling pins are recommended.
ATTACHMENT AND SUPPORT Common Fastener Types Plastic Cap Nails Impaling Pins Dual-Thread Fasteners Fastener and Washer Standard Screws and Concrete Nails Insulation Fasteners Owens Corning® Thermafiber® Impasse® Hangers Impasse® Hangers Impasse® Locking Washer Clip and Rail Systems Knight Wall Systems CL-Talon Smartci GreenGirt™ Strongwell STRONGIRT™ Wall Tie Clips and Anchors Thermafiber® RainBarrier® Clip Barrel-Style Masonry Anchor 17
ATTACHMENT AND SUPPORT Fastener Placement 16 in. x 48 in. Panel with 4 Fasteners 36 in. x 48 in. Panel with 5 Fasteners 48" 48" 3" 3" 3" 21" 3" 3" 3" 16" 3" 36" 15" 3" 24 in. x 48 in. Panel with 4 Fasteners 36 in. x 60 in. Panel with 6 Fasteners 60" 48" 3" 3" 3" 3" 3" 24" 36" 3" 3" 24 in. x 48 in.
ATTACHMENT AND SUPPORT Panel Layout 12 in. on Center Support Spacing 5 Fasteners per Board 16 in. on Center Support Spacing 5 Fasteners per Board 16" On Center Support Board Edges Offset 8 in. Spacing from Supports 12" On Center Support Spacing 5 Fasteners per board 12" 12" 12" 12" 12" 5 Fasteners per board Board edges offset 8" from supports 12" 12" Multilayer Application Guide 8" 16" 16" 16" 16" 16" 8" 24 in.
ATTACHMENT AND SUPPORT Installation of Mineral Wool Insulation Mineral wool insulation is installed between cladding attachments QUANTITY OF FASTENERS PER PANEL PANEL THICKNESS PANEL WIDTH PANEL LENGTH 4 1" to 4" 16" 48" 4 1" to 3" 24" 48" 5 4" 24" 48" 6 1" to 4" 36" 48" or 60" Mineral wool insulation is installed between Z-Furring Channel QUANTITY OF FASTENERS PER PANEL PANEL THICKNESS PANEL WIDTH PANEL LENGTH 2 1" to 3" 16" 48" 2 1" to 2" 24" 48" 2 1" 36" 48" or 60" 3
ATTACHMENT AND SUPPORT Installation of Mineral Wool Insulation Z-Furring Channels with Owens Corning® Thermafiber® Impasse® Hangers Owens Corning® Thermafiber® Impasse® Hangers attach directly to Z-Furring channels, eliminating any penetration of the water-resistive barrier (WRB). Due to the “shelf” they provide, they are also much more effective at eliminating crushing of the panels on the bottom of the structure.
ATTACHMENT AND SUPPORT Mineral Wool Insulation with Concrete, CMU, and Brick RainBarrier® 45 and RainBarrier® HD insulation can either be impaled onto shelf-type wall ties or installed so wall ties occur at insulation seams. When fit between wall ties, the insulation is secured to the wall tie with Thermafiber® RainBarrier® Clips or wall tie anchors.
ATTACHMENT AND SUPPORT Cladding Assemblies by Weight Fastener and Furring/Girt Recommendations for Light Weight Cladding Assemblies Light Weight Cladding Assemblies < 5 lbs./sq.ft. HIGH COMPRESSIVE INSULATION Owens Corning® Thermafiber® RainBarrier® ci High Compressive (80) BACKUP WALL FRAMING SPACING INSULATION THICKNESS MIN. SCREW SIZE MIN. SCREW MAX. VERTICAL PENETRATION INTO MIN.
ATTACHMENT AND SUPPORT Deflection Testing Owens Corning sponsored a laboratory study to quantify the relationship between cladding gravity loads and deflection under short-term cladding weights of up to approximately 1,000 pounds of total load or 30 pounds per square foot (PSF) on wall assemblies. Test results demonstrated that deflection was less than 1/16 of an inch at 43 lbs./fastener, in excess of what would be expected from wood-framing shrinkage and environmental effects on a typical building.
ATTACHMENT AND SUPPORT Stacking Guidance The overall dead load of the cladding along with project’s live loads will generally govern the attachment structural requirements. In tall, multistory projects, load-bearing lateral supports, shelf angles, or similar supports may also be utilized in the structural design, even when considering the attachment of continuous insulation.
ATTACHMENT AND SUPPORT Span Tables for High Compressive Products Span table guidance for three typical exterior insulated wall assemblies using: • Owens Corning® Thermafiber® RainBarrier® ci High Compressive (80) • Owens Corning® Thermafiber® RainBarrier® ci High Compressive Plus (110) • Owens Corning® Thermafiber® RainBarrier® ci High Compressive Max The intent of these span tables is to provide guidance when using and specifying Owens Corning® Thermafiber® RainBarrier® ci High Compressive insulation prod
ATTACHMENT AND SUPPORT Span Tables for High Compressive Products MAXIMUM FASTENER SPACINGS14 OWENS CORNING® THERMAFIBER® RAINBARRIER® CI HIGH COMPRESSIVE (80) DEFLECTION CRITERIA: L/240 WIND LOAD (PSF) 20 30 40 MAXIMUM FASTENER SPACING (IN.) DEAD LOAD INSULATION THICKNESS 3 PSF 5 PSF 10 PSF 15 PSF 1.5" 32 22 12 8 2" 29 20 10 7 4" 22 14 7 4 1.5" 26 20 11 8 2" 24 18 10 7 4" 19 13 7 4 1.
OTHER CONSIDERATIONS Exposure Weathering Owens Corning® Thermafiber® RainBarrier® mineral wool insulation products are designed to handle exposure during the normal construction cycle where the insulation is being installed ahead of the building’s façade. During this time, it is expected that our insulation will be exposed to the normal environmental elements, such as moisture, periodic rain, and snow. RainBarrier® insulation products are designed to handle this normal exposure and absorb less than 0.
OTHER CONSIDERATIONS Exposure Wind Washing Wind washing is wind-driven air movement through or behind thermal insulation within enclosures. Also, energy codes and standards in the United States do not require that wind washing be considered when specifying continuous insulation. The air flow over insulations can reach up to 3.2 ft./s (1.0 m/s) but most of the time ranges between 0.032 ft./s (0.01) to 0. 32 ft./s (0.1 m/s).
OTHER CONSIDERATIONS Fire and Smoke Protection Mineral Wool: Non-combustible Insulation A non-combustible is defined as a material that, in the form in which it is used and under the conditions anticipated, will not ignite, burn, support combustion, or release flammable vapors when subjected to fire or heat. Materials that are reported as passing ASTM E136, Standard Test Method for Assessing Combustibility of Materials Using a Vertical Tube Furnace at 750°C15, shall be considered noncombustible materials.
OTHER CONSIDERATIONS Miscellaneous Blind Fastening Blind fastening conditions are common in applications where the cladding and cladding attachment are fastened outboard of the mineral wool insulation. In these instances, the backup wall stud or other structure intended to receive the cladding attachment are not directly visible.
FURTHER INFORMATION Product Literature • Thermafiber® RainBarrier® 45 Product Data Sheet Pub. No. 10021139 • Thermafiber® RainBarrier® HD Product Data Sheet Pub. No. 10021140 • Thermafiber® RainBarrier® Dark™ Product Data Sheet Pub. No. 10025102 • Thermafiber® RainBarrier® ci High Compressive (80) Product Data Sheet Pub. No. 10023723 • Thermafiber® RainBarrier® ci High Compressive Plus (110) Product Data Sheet Pub. No.10023499 • Thermafiber® RainBarrier® ci High Compressive Max Product Data Sheet Pub. No.
Technical information contained herein is furnished without charge or obligation and is given and accepted at recipient's sole risk. Because conditions of use may vary and are beyond our control, Owens Corning makes no representation about, and is not responsible or liable for, the accuracy or reliability of data associated with particular uses of any product described herein. Owens Corning reserves the right to modify this document without prior notice. THERMAFIBER, INC.
