One of the most critical (but often neglected) components in ensuring ‘watertightness,’ the roof assembly is typically installed early to protect the unfinished building from water penetration, enabling interior work to advance.
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Elastomeric wall coatings (EWCs) are an important part of new and remedial construction, protecting cladding from water penetration. Assuming they are properly applied, premature failures of EWCs typically involve their manufacturing formulation.
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Using the acronym ‘WRB’ is common, but the intended meaning is often misunderstood, as it can refer to either a ‘water’ or ‘weather’-resistive barrier, with the two having different performance expectations.
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Air vapor barriers (AVBs) are critical in controlling air and moisture transport within building enclosure assemblies. Ignoring bulk water penetration, moisture-related issues experienced within the building enclosure are more commonly the result of moisture transport through air movement..
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Concrete floor slabs contain excess moisture that can damage many types of floor finishes. To address this problem, manufacturers have developed products aimed at mitigating the moisture in concrete. However, not all these products are suited to their intended purpose.
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Cracking was observed in the exterior curtain wall glass on an early-1970s mid-rise building in the Midwest. As originally constructed, the curtain wall included single-glazed 5.5-mm (7/32-in.) thick bronze-tinted glass at all floors—except the uppermost level, which featured single-glazed 9.5-mm (3/8-in.) thick clear polished plate glass.
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A 1920s neo-Classical building’s ornamental plaster ceilings were a source of wonder and pride to the office workers who passed through the corridors each day. However, one morning, cracks were noticed in the ceiling, so the corridor was roped off.
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Despite efforts at coordination during design and construction, lack of accommodation or understanding of the accumulative effect of dimensional tolerances during the installation of one or more cladding components continues to occur.
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Planning for weather, despite its unpredictability, is an important part of scheduling construction activities. Certain building materials can only be applied during specific temperature and humidity/moisture conditions.
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