Building Envelope Design using ROXUL ® (BEDR ? ) CAVITYROCK ® and COMFORTBATT ?
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Building Envelope Design using ROXUL® Building Envelope Design using ROXUL (BEDR™) ® Effective Insulating Solutions – The Future of High Performance Rainscreen Systems Rush University Medical Center, Chicago, Illinois ROXUL CAVITYROCK®

ROXUL COMFORTBATT™ and CAVITYROCK® RAINSCREEN SYSTEMS The Building Envelope Design using ROXUL [BEDR ] Wall System Philosophy: ® Evolution of Rainscreen Systems The primary functions of a wall system* – to protect, facilitate, and/or provide heat, air, rain penetration, movement of moisture, fire, durability, noise, light, strength, and aesthetics, have not changed over the past 40 years. The same cannot be said for the components and design of cavity wall systems, which have undergone a significant transformation in North America. This change in design requirements is a result of the...

Building Envelope Design using ROXUL® The Future of High Performance Rainscreen Systems ✓ Stable Long-Term Thermal Resistance ✓ Sound Absorbent ✓ Fire Resistant ✓ Vapor Permeable ✓ Continuous Insulation ✓ Environmentally Sustainable The BEDR™ Wall – Rainscreen System The ROXUL® BEDR Wall Rainsceen System is comprised of ROXUL thermal batt insulation in the exterior stud wall cavity (up to 6”), combined with a high density, semi-rigid ROXUL insulation board (up to 5”) in the external cavity. ROXUL insulation within the exterior wall stud cavity and the external cavity offers superior...

ROXUL COMFORTBATT™ and CAVITYROCK® RAINSCREEN SYSTEMS ROXUL COMFORTBATT and CAVITYROCK –BEDR Wall Combination ™ ROXUL COMFORTBATT™ The COMFORTBATT™ product line is a non-combustible, semi-rigid batt insulation range that is designed for exterior steel stud wall applications. COMFORTBATT products are available from 2.5" to 6” in thickness and have standard R-values ranging from R10 to R24. Stone wool batt insulation will not slump inside the wall cavity over time as fiberglass often tends to do. COMFORTBATT products also provide excellent sound absorption characteristics. ROXUL CAVITYROCK®...

Building Envelope Design using ROXUL® Why this BEDR Wall is a Better Wall ™ Dimensional Stability Long-Term Thermal Performance The dimensional stability of an insulation material is necessary for the faultless function of an insulation system. Dimensional changes in materials vary according to their physical properties. Thermal expansion co-efficients express the rate at which materials shrink or expand when cooled or heated. ROXUL® insulation has a much smaller thermal expansion coefficient than organic insulation materials such as foam plastics. As the building industry seeks new and...

ROXUL COMFORTBATT™ and CAVITYROCK® RAINSCREEN SYSTEMS Meeting the Challenges of Today’s Climate Zones ASHRAE – History of R-Value Requirements The American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE), is an international Society of technical individuals who provide knowledge to the building industry on heating, ventilation, airconditioning, and refrigeration (HVAC&R). The Society developed ASHRAE 90.1, an energy conservation standard that provides the minimum requirements for energy efficient buildings. This standard, or an equivalent, is applied today in many...

Building Envelope Design using ROXUL® Build Your BEDR Wall Rainscreen System ™ Canada Only Steel Stud – On Centre No Insulation in Steel Stud No Insulation in the Exterior Cavity Stated R-value Effective R-value Stated R-value Effective R-value Stated R-value Effective R-value Stated R-value Effective R-value Stated R-value Effective R-value Stated R-value Effective R-value Stated R-value Effective R-value Stated R-value Effective R-value Stated R-value Effective R-value Effective Insulation/Framing Layer R-values between steel framing factors were obtained from ASHRAE 90.1-2010 Table A9.2B...

ROXUL COMFORTBATT™ and CAVITYROCK® RAINSCREEN SYSTEMS Superior Sound Absorption Architects are increasingly choosing cladding facades on buildings, which, when compared to brick, tends to reduce the acoustical performance value of the wall system. With recent trends towards the use of new lightweight construction techniques and cladding materials, ROXUL® stone wool cavity wall insulation provides added acoustical value by outperforming traditional foam plastic insulation. In a BEDR™ wall system, stone wool provides improved low frequency sound absorption to both normal and random incidents...

Building Envelope Design using ROXUL® ROXUL Stone Wool: Fire Resistant, Non-Combustible Insulation Fire Safety: Stone Wool Versus Foam A key feature of ROXUL® products is its fire resistance. CAVITYROCK® is classified as “non-combustible” as determined by ASTM E136 and CAN4-S114. It will not develop toxic smoke or promote flame spread, even when directly exposed to fire, as most other insulation materials do. When tested in accordance with ASTM E 84 results typically show a flame spread of 0 and a smoke development of 0 to 5. By comparison, spray polyurethane foam (SPUF) results, when...

ROXUL COMFORTBATT™ and CAVITYROCK® RAINSCREEN SYSTEMS Moisture Management Moisture Retention Comparison To obtain a better understanding of the characteristics of in situ thermal insulation within cavity walls, A Certified Building Science Expert at ROXUL reviewed two applicable scenarios in Seattle, Washington. These were modeled for a three-year period and the theoretical wall was located at mid-level of a high-rise on the western elevation. The charts to the right represent the first modeled scenario. Note that CAVITYROCK® DD stone wool had much less moisture content over the same period...

Building Envelope Design using ROXUL® Long Term Thermal Cycling New York WUFI* – Moisture Content within BEDR Wall over 3 Years in Climate Zone 1 3 WUFI* – Moisture Content within BEDR Wall over 3 Years in Climate Zone 4 6 Florida Miami Graphs indicate the moisture performance of CAVITYROCK® over a 3-year timeframe. CAVITYROCK dries out year over year to the same levels, indicating that moisture does not build up in the insulation over time. BEDR Wall Layer/Material Climate Zone 1 BEDR Wall Layer/Material Climate Zone 4 Cement Board Cement Board ROXUL CAVITYROCK® ROXUL CAVITYROCK® Vapor...