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Keywords: condensation
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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7747-5
... High humidity and corrosive indoor environments in natatoriums in cold climates pose unique risks and challenges due to moisture condensation in roofs. Without the existence of standards for roof design, based on a simple, steady-state dew-point analysis, the common practice is to employ...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2023
ISBN: 978-0-8031-7747-5
... restricted to warmer climates, but it has become more prevalent in mixed and heating climate zones within the last five years. However, improperly placed or configured insulation in “cool” roofs in these mixed and heating climate zones can lead to condensation and associated biological growth, air quality...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2022
ISBN: 978-0-8031-7716-1
... the curtain wall extends past a floor line to create a soffit enclosure or past an adjacent perpendicular wall to create what is often referred to as a “wing wall.” These types of conditions are not considered in the standard test methods that define the system's thermal performance and condensation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2020
ISBN: 978-0-8031-7680-5
... The risk of condensation on the interior of building enclosure systems can be an important driver in the design and selection of both building enclosure and mechanical systems. Condensation risk is an especially important performance metric in sensitive spaces and humidified spaces...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2020
ISBN: 978-0-8031-7680-5
... buildings. The primary moisture reduction strategies employed in these studies include added thermal protection, modification of heating systems, the introduction of active air movement, and ventilation of the roof assembly. The success of these strategies is verified with empirical data. condensation...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2019
ISBN: 978-0-8031-7675-1
... The design and construction industry is increasingly interested in the effects of air leakage and how it relates to mechanical system efficiency, thermal comfort issues for building occupants, condensation, moisture accumulation, and concealed deterioration of building materials within wall...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7647-8
... Current methods of evaluating the risk of condensation on fenestration systems generally include two-dimensional computer modeling and sometimes laboratory testing. This is not sufficient for curtain wall systems that incorporate areas of insulated spandrel. In most curtain walls, mullions can...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2017
ISBN: 978-0-8031-7647-8
... and construction of energy-efficient and durable building envelopes. Conclusions and recommendations for further research also are offered. moisture condensation water vapor permeance retarder insulation ratio hygrothermal performance assessment 362 ADVANCES IN HYGROTHERMAL PERFORMANCE...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... of vapor transport, while it obscured the importance of temperature impact. They based their argument on the prevention of “condensation,” yet they failed to provide a definition of condensation sufficient for use as a performance measure or criterion. They produced prescriptive recommendations that later...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... insulation built-in moisture condensation moisture transport vapor pressure Reprinted from JTE, Vol. 39, No. 2 doi:10.1520/JTE102971 Available online at www.astm.org/JTE Marcin Pazera1 and Mikael Salonvaara2 Drying Characteristics of Spray-Applied Cellulose Fiber Insulation ABSTRACT: Cellulose ber...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... It has long been noted that interior vapor barriers in wood frame walls in hot-humid climates can lead to interstitial condensation within walls. The bases for this recognition are predictive simulations, anecdotal observations, and a limited number of experimental studies. This paper describes...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... that environmental humidity can condense within this space in warm, humid climates. This condition may be most severe when the sill pans are made from materials with high thermal conductivities, like metal. If water were to condense in this cavity, condensate may periodically contact the exposed underside...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... In an effort to reduce the likelihood of condensation at metal window frames and glazing, methods to improve the thermal performance are now readily available, such as thermal breaks and warm edge technology. Despite technological improvements, metal window frames may still exhibit interior...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... Special building occupancies, those with a high interior relative humidity, have a specific set of performance requirements to control condensation for exterior window and curtain wall systems. High levels of humidity, if not properly accommodated by glazed exterior wall systems, can result...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... (RH) of 48 % RH at 21°C (70°F). Due to a lack of containment of the moist interior air, condensation formed in the exterior walls, in the roofing, on the window and door systems, and on the skylights of the facility, particularly along the north and east elevations of the building, which resulted...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... Condensation problems in general use (i.e., non-humidified) buildings such as offices, schools, and condominiums typically manifest themselves as visible staining on window and door perimeters or minor dripping from overhead components. The relatively low interior moisture levels...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... The purpose of this paper is to examine condensation rating procedures, specifically the procedures as defined by the National Fenestration Rating Council (NFRC), and to compare the standardized procedure with in situ performance data. The American Architectural Manufacturers Association (AAMA...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2011
ISBN: 978-0-8031-4471-2
... The use of precast concrete panels as a cladding material can provide an economical and attractive method to enclose contemporary buildings. In cold climates, improper detailing or inappropriate construction of precast clad walls can result in widespread water problems due to condensation...
eBook Chapter
Book: Masonry
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2010
ISBN: 978-0-8031-3424-9
... Through more than 20 years of investigating water leakage and condensation problems, the authors have observed that a high percentage of moisture problems related to masonry walls are associated with the interface between masonry veneer and fenestration systems. These problems are often...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2009
ISBN-10: 0-8031-3418-5
ISBN: 978-0-8031-3418-8
... The Wexner Center for the Arts went through a major façade renovation to fix the water leakage and condensation problems. The work included replacing glazed skylights, curtain walls, and roofs. This paper describes how renovation work has been done with modern technologies to study thermal...