Terra-LITE™ Aggregate

Terra-LITE™ Aggregate

Granular Drainage Media for Green Roofs

Terra-LITE™ Aggregate is a lightweight granular aggregate that creates a sustainable root environment by retaining and draining water in a natural way. Depending on specific project requirements, additional drainage layers can be used to increase horizontal flow rate. It can also be used as bedding material for pavers or patios in a green roof area.

Terra-LITE™ Aggregate is available in different saturated weight classes, each designed to guide you in choosing the best option for your project based on your weight requirements. Each weight class is identified by a number that corresponds to the typical weight for fully saturated media based on ASTM E2399.

Roofscape® Granular Drain is available in different saturated weight classes. These weight classes are designed to guide you in choosing the best option for your project. Each weight class is identified by a number that corresponds to the typical weight for fully saturated media based on ASTM E2399.

RamTough 250 is Hot Rubberized Asphalt Roofing & Waterproofing Membrane Waterproofing System that is uncompromising, tough, durable, and offers peace of mind to the owner

The main components utilized in Greenroof-Roofscapes® systems are the waterproofing membrane, layers for protection, drainage, water retention, and aeration, layers of insulation, soil overburden &

Project Profiles

The original project scope of the Baltimore Convention Center called for the replacement of the existing roof membrane due to membrane failure and subsequent leaking into the Convention Center’s main halls below. Once the site was studied, the Barrett Company suggested that the Convention Center take advantage of the opportunity to upgrade the aesthetic and functional qualities of the Terrace with a Greenroof installation.

Project Profiles

Belle Square is a dynamic complex integrating four main components: residential, office, retail and parking in the center.

Project Profiles

In 2011, the D.C. Public Library began plans for the modernization of the Martin Luther King Jr. Memorial Library. The original vision for the Washington, D.C. landmark, designed by modern master Ludwig Mies van der Rohe, used transparency and light as metaphors for freedom and knowledge, the very principles of Dr. King’s life teachings. More than 40 years later, the team at OTJ Architects was selected to helm the transformation of Washington’s Central Public Library.

Project Profiles

In 2005, the Federal Deposit Insurance Corporation (FDIC) adopted a new objective— To evaluate & measure the operational energy conservation of its Virginia Square facility and identify opportunities to further conserve energy and reduce utility costs.

Project Profiles

Located between Chicago’s lakefront and the central business district (the loop), Millennium Park is a multi-award winning 24.5-acre public park with venues for performance, art, sculpture, architecture, and landscape architecture.

Project Profiles

The International Monetary Fund is a key worldwide agency, chartered through the United Nations, that works in a variety of sectors to promote global growth and sound economics.

Labor & Material Limited Warranty

LEED Information

Education & Training