Tag Archives: B2010.10?Exterior Wall Veneer

Weep Now or Weep Later: Moisture management and risk zones for masonry

All images courtesy Masonry Technology Inc.

Weeps should create an opportunity for the liquid water that has drained down to the top surface of a flashing to exit the core or cavity of the masonry wall on the top surface of the flashing. Unfortunately, numerous unfortunate conditions have occurred because of incorrect uses of materials and devices, or detailing errors. This article examines what design professionals need to know about allowing moisture to escape their masonry.

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Weep Now or Weep Later: Of Ropes and Tubes

All images courtesy Masonry Technology Inc.

One of the first commonly employed weep details was the sash cord or ‘rope’ weep. In some cases, this detail was expanded with sections of the sash cord laid in the cavity and then extended through the wall, usually at a head joint. In other cases, the sash cord was fastened vertically up the backside of the cavity. In yet other instances, it would be pulled out of the wall, leaving a hole through the head joint or bed joint of mortar.

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Troubleshooting Exterior Masonry Walls

Photo © BigStockPhoto/Ronald Hudson

This article focuses on original building design evaluation (including expansion joints) and diagnostics of cracks in brick veneer masonry walls. Proper rehabilitation techniques are reviewed, along with solid masonry wall system drainage design, and evaluation of diagonal, vertical, and horizontal cracks (including simple water penetration testing and knowledge regarding freeze and thaw).

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Exploring Mica Coatings’ Potential: A look at Port Canaveral’s Exploration Tower

Photo (c) Rip Noel, Noel Studios Inc. Photo courtesy Valspar Corp.

The welcome center at Florida’s Port Canaveral space shuttle facility is Exploration Tower. Clad in aluminum panels and a curtain wall assembly, it is also the first major project to be finished with paint that changes color depending on the light reflectance. This article looks at how such a coating is applied, and what design professionals need to know about the visual potential of such materials.

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