Amenity Roofing Design: Avoiding Performance Pitfalls

Date: June 13, 2019 4:00pm
Location: SGH DC
Speaker(s): John Karras
sgh dc

Thursday, June 13, 2019

1625 Eye St NW
Conference Center
Washington, DC 20006

4:00 - 4:30 p.m. Registration & Refreshments
4:30 - 6:00 p.m. Presentation & Discussion
6:00 - 7:00 p.m. Cocktail Reception

aia continuing educationParticipants will earn 1.0 AIA CES Learning Unit (LU/HSW) for their attendance. Attendance is free and open to all; please invite colleagues. We will serve refreshments and hors d'oeuvres. Space is limited.



Rooftop amenity spaces have become common selling points of high-end buildings. These inviting spaces – featuring water features, swimming pools, playgrounds, outdoor kitchens, or elaborate landscaping – are frequently included in new construction and retrofits of existing roof spaces. Rooftop amenities, however, carry inherent waterproofing, drainage, and wind-related complexities that go well beyond conventional low-slope roofing design and construction. In this presentation, we will discuss how architects, specifiers, designers, contractors, and consultants can coordinate closely to create appealing spaces while avoiding the potential performance and maintenance pitfalls inherently associated with amenity roof features.

After attending this seminar, participants will be able to: 

  • Identify common features of amenity rooftop spaces and how they relate to waterproofing, drainage, and wind-related design.  
  • Understand common challenges seen on these projects, including water leakage, water management, and unintended maintenance problems.
  • Discuss waterproofing and drainage maintenance programs for these spaces.
  • Recognize the importance of coordinated design among the diverse project team associated with rooftop amenity spaces. 



john karras

John Karras, P.E. | Senior Project Manager 
John Karras is a professional civil engineer with extensive design and construction management experience on commercial projects. His specializes in building enclosure design, consulting, and construction phase services – in particular, roofing and waterproofing consulting – and creatively collaborating with construction teams to navigate complex field challenges.   


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