Green Roofs

Achieving LEED Point Requirements

The popularity of energy-efficient roofs, or Green Roofs, is increasing as its value is appreciated. The intention of the Green Roof concept is to take otherwise heat producing areas, such as rooftops and plazas, and provide a cooler environment. The result is a cooler roof decreasing the building´s energy consumption and reducing the "heat island" effect.

The Green Roof concept has seen wide spread acceptance within the construction community. Hanover® Prest® Pavers work hand in hand with Green Roof assemblies to provide environmental benefits and aesthetically appealing rooftop or plaza gardens.

From planted areas which incorporate topsoil and mulch to grassy areas over a layer of soil or lightweight gravel fill, Hanover® Pavers can become an integral part of these lush landscape designed roofs. Pavers can be used to create walkways, terraces or seating areas while providing positive drainage.

Hanover® is developing a series of pavers that provide reflectance and emissive values providing great performance to the Green Roof concept. Hanover´s Glacier White has a reflectance value of 0.655 and emissivity value of 0.90.

These values are a critical element in the roof´s ability to reduce heat consumption into the structure below. Although the 0.655 and 0.90 are target values, Hanover® manufactures a variety of pavers that provide both reflective and emissivity values. Some are less than the target value, but still provide a reflective or emissive value.

Hanover® Architectural Products is in the process of developing additional colors that will satisfy the 0.655 and 0.90 requirement. In all cases, Hanover® Prest® Pavers can be an integral part of achieving the LEEDS point requirements for Green Roof designs.

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