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Waterproofing Disasters – Case Studies

Presented by East Bay / Oakland Chapter CSI / Co-Sponsored by AIA East Bay

Friday, November 20th, 2015
7:30am to 12:30pm
Location: Scott’s Seafood, 2 Broadway, Oakland, CA 94607
For more information about the event and to RSVP Click Here

4 CES/HSW LUs

Presentations:

Water Proofing Problems- Causes & Remedies

James Strong & James Chiropolos, WJE Associates, Inc. will present two case studies examining how water proofing problems were caused and how necessary repairs were implemented.  A new hospital is about to open up; however, every time it rains, water pours into the building. Elsewhere, another building has been subjected to long-term water leakage—can the water leakage be damaging the interior structural wall framing?

Below Grade Water Intrusion on a Large New Construction Project

Jeff Chen & Phillip Kelleher, McGinnis Chen Associates, will focus on a real life example where the Below-Grade waterproofing system failed even though all industry standard precautions were taken.   The Architect’s drawings were peer reviewed by a waterproofing consultant, a high end waterproofing membrane was used, an approved applicator installed the waterproofing, and the owner hired a third party waterproofing inspector. We will discuss the project, accepted solution, and lessons to be learned by the industry.

Properly Installed Roofs That Sometimes Aren’t

Phil Dregger & Chris Nelson’s, Technical Roof Services, will focus on understanding of ounce-of-prevention tips gleaned from roof covering “disasters”. Reflective Roofs and Moisture Gain – Code-compliant re-roof project where highly reflective membrane caused wood decks to decay. Polyisocyanurate Insulation – Multi-store project where apparently ASTM 1289 compliant polyisocyanurate boards developed large gaps at joints. Built Up Roofs over OSB – Large warehouse where “common” base sheet attachment pattern failed to provide adequate wind uplift resistance.

Balcony Failure Case Studies and Best Practices

Colin Shane & Joseph Piñon, RDH Building Sciences, will explore common problems related to balcony and deck construction in wood-frame and non-combustible construction including issues related to bulk water intrusion, air leakage condensation, and building energy efficiency. Present best practices for designing durable balcony assemblies, from the basic first step of selecting durable materials; to incorporating deflection, drainage, drying as key elements of moisture control design; and finally how to integrate balconies with the adjacent building enclosure assemblies.

Learning Objectives:

By the end of this presentation, attendees will understand:

Water Proofing Problems- Causes & Remedies

  1. Identify the factors that influence the conditions for mold and mildew growth.
  2. Define ASTM D3273, ASTM D5590, SCAQMD Rule 1113 and other criteria and features of a high performance mold and mildew-proof coating.
  3. Specify the components of a complete wallcovering system and describe the utility of its parts where moisture infiltration from the wall cavity is a concern.
  4. Compile and analyze product manufacturers information that supports claims of high performance mold and mildew-proof coatings.

By the end of this presentation, attendees will understand:

Properly Installed Roofs That Sometimes Aren’t

  1. Will understand why reroofing with a highly reflective roof can cause more water to accumulate in a roof system then it did before.
  2. Will understand why ASTM 1289 compliant polyisocyanurate boards can develop large gaps at joints after installation.
  3. Will understand why attaching built up roof membranes to wood decks using “commonly accepted methods” often ends up not provide code required levels of wind uplift resistance.

By the end of this presentation, attendees will understand:

Balcony Failure Case Studies and Best Practices

  1. Will be able to state at least three common problems related to balcony and deck construction.
  2. Will be able to offer ways to mitigate said problems.
  3. Will be able to identify at least three types of waterproofing materials.
  4. Will be able to discuss a current concern regarding venting and fire-rated assembly.

Below Grade Water Intrusion on a Large New Construction Project

Forthcoming

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