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Greenroof Project of the Week for November 18, 2013: International Monetary Fund (IMF) HQ #2

on November 21, 2013 at 2:34 pm under Project of the Week: 11/18/13

International Monetary Fund (IMF) HQ #2
Washington, DC, USA
28,374 sq. ft Greenroof


Project Description & Details

The International Monetary Fund (IMF), also known as the world’s bank, headquartered in Washington, D.C., has two buildings across the street from one another, Headquarters 1 and Headquarters 2. In 2009, IMF’s Headquarters #2 became LEED Gold certified, and in 2013 HQ2 achieved LEED Platinum Existing Building: Operations and Maintenance. Employing new Barrett Ram Tough 250 rubberized asphalt, Barrett Company provided a 20 year Vegetative Roofing System warranty for both greenroof projects.

At the HQ2 Building, although the green roof itself is inaccessible, employees and visitors may enjoy the scenic overlook from a patio area with tables and chairs. The existing roofing system was a hot applied rubberized asphalt membrane installed just a few years ago, but realizing the strong need for greenroofs in the Capitol District, the IMF decided to convert the existing ballasted assembly to a greenroofing system. The new and old membrane system was covered with a 4 inch deep extensive green roofing system with 5 species of sedum using pre-vegetated sedum mats from Moerings Sempergreen.


The International Monetary Fund HQ #2 is featured in the month of December in The 2014 Greenroofs & Walls of the World™ Calendar – order yours today. They make a perfect holiday gift for your family, friends, staff and clients!

Year: 2012
Owner: International Monetary Fund
Location: Washington, DC, USA
Building Type: Corporate
Type: Extensive
System: Single Source Provider
Size: 28,374 sq.ft.
Slope: 1%
Access: Inaccessible, Private


Designers/Manufacturers of Record:

Architect for the Project: OPX
Roofing/Waterproofing Consultant: G. Blake Giddens, P.E., Project Engineer, Restoration Engineering, Inc.
General Contractor: Jones Long LaSalle
Waterproofing & Green-Roofscapes® Supplier & Technical Consultant: Barrett Company
Waterproofing Applicator: James R. Walls Contracting Co.
Landscape Installation: Tilson Group
Soil Supplier: J. K. Enterprises
Pre-vegetated Sedum Mats: Moerings Sempergreen

Click here to see more information about this project in The International Greenroof & Greenwall Projects Database.

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Love the Earth, Plant a Roof!

~ Linda V.