600 Mass Avenue

Washington, DC

Located among the finest that Washington, DC has to offer, this 10-story building offers over 400,000 square feet of multi-tenant space, including a Rooftop Garden, Fitness Center, and 20,000 square feet of retail space.  The innovative and conscientious design has been created to achieve L.E.E.D Platinum Certification, which is the highest level of achievement in sustainability.

Architect: CORE Architecture

General Contractor: Clark Construction Group

Waterproofing Contractor: AndieMac Waterproofing

600 Mass Avenue incorporates the following Polyguard Products:

Waterproofing Systems

Underseal® Blindside™ Membrane – 73-mil, pre-concrete pour waterproofing membrane used for vertical positive side waterproofing.

Underseal® Blindside™ Membrane is used as a waterproofing membrane where vertical, positive-side waterproofing is required, but access to the positive side is impossible due to the soil retention system.  Once the concrete is poured against the Blindside™ Membrane, the concrete cures, and a mechanical bond forms to secure the concrete to the membrane.  Also, subsequent to concrete placement, cold flow of the waterproofing compound will take place and an adhesive bond will be added to the mechanical bond given by the fibers.  With both a mechanical and adhesive bond, the concrete will be tightly sealed and bonded to the membrane, creating superior protection against moisture intrusion. 73-mil Underseal® Blindside™ can also be used in certain horizontal applications.

System Accessories

Poly Cover – Preformed dome shaped tie back cover made with heavy duty, high impact ABS plastic.  It is designed to cover protruding tie-back bolts less than 6″ in height in lagging and retention walls prior to application of the Underseal® Blindside™ membrane.

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