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A Simple Solution: An SPF Retrofit to Stop Leakage

The presenters will offer a case study of a wellness building in Iowa that, during its first winter, had icicles on the roof eaves, and interior water leakage during its first spring. . A repair was performed that included replacing the existing insulation and vapor barrier with new SPF as a thermal and air barrier. Whole-building air testing was used before and after repairs to prove the improvement in air-tightness. Bruce Kaskel has expertise in exterior wall systems related to glass, glazing, water infiltration, corrosion, structural adequacy, energy performance, anchorage devices, and durability. His projects include aluminum and glass curtainwalls, masonry, exterior windows and doors, and precast concrete and stone panels. Kaskel has provided exterior wall consulting services during design and construction of new buildings, including serving as a building envelope commissioning agent (BECx). Jennifer Schneider has been involved with numerous projects related to the inspection, investigation, and repair of distressed conditions in existing buildings. Her experience also includes building enclosure commissioning (BECx) and peer design review for new construction, applying her experience in modes of leakage, condensation, and distress to proposed detailing. Schneider applies thermal and hygrothermal modeling to her evaluations of exterior wall systems. Read More

Adhesion of Air and Water Resistive Barrier Materials - A Sticky Subject

Many air and water resistive barriers are adhesively installed on substrates. Organizations have required a minimum value when conducting on-site pull testing. Many question the number and wonder where the number comes from. There is a lot of discussion on what the loads are for a location and height of a building. Others say that the value has to do with proper installation of the materials. This presentation will cover the origins of the minimum value that is currently being used, how this value relates to installed properties, and what is the purpose for the minimum value. The presentation will also provide the results of a research project that was done to see what actual site values of pull adhesion are, based on material, substrate and other conditions. Mr. Laverne Dalgleish is the Executive Director of the Air Barrier Association of America (ABAA). As such, he works to champion energy conservation in buildings while educating the building owners and designers about the benefits of energy conservation such as durability, comfort, reduced maintenance, reduced HVAC equipment costs and the positive impact on the environment. Mr. Dalgleish travels North America on a weekly basis to educate building owners and designers on the benefits of effective and working air barrier systems in buildings. This education mission includes working with standards development organizations, training and education groups, government policy departments, and quality assurance program developers for the construction industry. Mr. Dalgleish is the Secretariat of two ISO Committees, ISO TC61 SC10 Cellular Plastics and ISO TC163 SC3 Thermal Insulation Products. He is also Chair of the ULC Thermal Performance in the Building Environment Standards Committee. ant加速器ios

Air Barriers: They Might Be Continuous, but Still in Danger of Allowing Building Component Damage

Uncontrolled airflow within a building enclosure can cause damage to building components. Due to our harsh winter conditions in Minnesota and the services our firm offers, we have had the unique opportunity through our forensics investigations, monitoring of existing buildings, and extensive design consultation to see areas of concern to designers, contractors, and building owners. Remediation and prevention of problems will be outlined. Ryan Krug provides building enclosure consulting, building enclosure commissioning (BECx), and forensic engineering services for a variety of clients in both the private and government sectors. His primary responsibilities include design development assistance, technical plan and specification peer review, and quality assurance field observations related to exterior enclosure systems (air, water, thermal,df and vapor control layers). In addition, Krug has extensive experience in building enclosure field performance testing, including fenestrations, curtainwalls, claddings, and whole-building air barrier testing. Read More

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Prior to becoming a building enclosure consultant, Raymond spent 17 years working as an architectural sheet metal worker in Louisville, KY. During this time, significant detailed information was derived from other industry professionals, time at the bench, as well as significant field experience with snips and soldering irons in hand. This experience—coupled with the last ten years as a building enclosure consultant—have given the presenter unique and well-rounded architectural sheet metal experience. While many in the industry proclaim elevated levels of sheet metal expertise, it is apparent during design peer review of these assemblies and numerous sheet metal installations that the skills needed for proper design and installation are lacking. The purpose of this presentation is to share the presenter’s experience and pass on both time-tested design nuances and installation techniques that will enlighten the intermediate and advanced consultant. Russell Raymond has over 29 years of experience in the sheet metal contracting and building enclosure consulting industries. He started his career in an architectural sheet metal contracting company in Louisville, KY, and is a third-generation sheet metal tradesman. He is currently a Principal, Senior Building Science Consultant, and Department Manager for Morrison Hershfield in Houston, TX. Raymond has investigated sheet metal, roofing and waterproofing, and cladding and glazing-related failures and designed and specified roofing and sheet metal systems. He is an RBEC, RRO, CEI, a Certified TRI, Certified Level 1 Infrared Thermographer, and a CDT. In addition, Raymond was the 2014 IIBEC Volunteer of the Year. Read More

ASHRAE 90.1 and Cold-Weather Condensation

To comply with the energy code, designers often utilize the Prescriptive Building Envelope Option described in ASHRAE 90.1 when determining the minimum amount of insulation required within a wall assembly. In cold climates, the minimum R-Value requirement for framed wall assemblies allows designers to utilize a split insulation arrangement to meet code requirements. However, these designs often carry an elevated risk of condensation that is not explained in the text of the standard and may lead a designer to unknowingly promote detrimental insulation combinations with regard to convective condensation. A design tool has been developed based on psychometrics and ASHRAE 90.1 requirements that illustrates the ratio of continuous insulation to total insulation. The design tool currently assumes a high leakage rate; therefore, values along the pass-fail line may be overly conservative. In order to incorporate a more realistic air leakage rate and develop a more defined pass-fail criteria, our research uses software tools such as WUFI® to study the requirements offered by 90.1 to evaluate the hygrothermal performance of insulation combinations for framed wall assemblies based on the simplified exfiltration model. Hygrothermal engineering principles and the results will be presented with future publication of the design tool for the design industry. Dave Finley is involved in a wide range of structural and architectural investigations with Wiss, Janney, Elstner Associates, Inc. (WJE). His building enclosure experience includes water infiltration testing of windows, curtain walls, masonry façades, and plaza and below-grade waterproofing, as well as condensation and air leakage testing of glazed fenestrations and masonry façades. Finley is well versed in performing hygrothermal analyses using steady and transient state techniques. Additionally, he is capable of analyzing window and wall systems for two-dimension thermal conduction. Manfred Kehrer has been involved in researching, testing, and analysis of exterior enclosure and concrete systems. He has helped develop WJE’s hygrothermal laboratory and computational fluid dynamics initiative for analysis of building enclosures. Prior to joining WJE, he worked for more than 20 years at Fraunhofer IBP, Germany, in the area of hygrothermics. Kehrer was a senior building scientist at the Oak Ridge National Laboratory (ORNL), where he was in charge of a variety of types of research in building science. Since 2011, Kehrer has been the Official WUFI® Collaboration Partner for USA/Canada. ant加速器ios

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Presenter: Allen Lyte, RRO W. Allen Partners, Inc., Aurora, ON Roofing membranes within a roof assembly are generally the only barrier to keep the elements out. Standard building cladding design recognizes that well-performing walls consist of layers of materials (zones) to resist wind, heat, rain, etc., to achieve the rain screen principle in wall cladding. This dual-barrier design can be applied to roofs. Protected membrane roof (PMR) assemblies can have superior performance over conventional roofs since the moisture-resistant insulation protects the primary roofing membrane from the environment. Dual-barrier design can be implemented to help reduce negative effects of water diffusing into the insulation or reducing the thermal performance by flowing underneath. Typical PMRs can be easily upgraded by the placement of a properly selected vapour-permeable drainage layer above the insulation. Read More

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