CASE STUDIES

South William Street Restoration Project

60 West 76th Street Restoration Project

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tel:  718-803-6400

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Bulado General Contractors

26-44 Borough Place

Queens, NYC 11377

BLUE & GREEN ROOF INSTALLATION PROJECT

Address: Public School 118 - Jamaica, Queens 11412

Type of Work: Blue and Green Roof Installation

Project Date: 2010

In 2010, the Gaia Institute retained Bulado to build a water retention prototype “Blue Roof” and a control system, a standard Green Roof, each comprising 3,500 SF of surface area on the roof of Public School 118 in Jamaica, Queens. The Gaia institute is a non-profit organization dedicated to providing design and engineering analysis support for the implementation of sustainable systems in buildings and acts frequently as a consultant to the DEP. The purpose of a Blue Roof is to retain storm water and stem the runoff that causes the city sewage system to overflow during heavy storms.

As such, it is designed to hold up to 2” of water during a period of up to 24 hours, requiring the highest level of waterproofing available in the industry. The waterproofing system selected for the task was the Barrett Ram Tough 250, a SBS - Modified Bitumen Roofing System. The Ram is a rubberized asphalt membrane which forms a completely monolithic, waterproof system without seams or joints. It exhibits excellent adhesion characteristics to almost any sound horizontal or vertical surface. Water cannot get under or through it. Ram-Tough is a hot-applied rubber membrane that seals difficult flashing conditions, and remains flexible for its lifetime.

As with all roofing jobs, the challenge here was to complete the project before a specified deadline – in this case the start of the school year - while preserving the water tightness of the roof in the interim period between old roof removal and new
system application.

Bulado was successful in meeting the strict deadlines and safety measures established by the DEP and the SCA and is honored to have been part of this innovative concept in environmental building construction.