DLCC plaza deck in Pittsburgh, PA

Vegetated Roof System Technology

Stormwater management

Stormwater runoff mitigation is the primary driver of extensive vegetated roofs due to the abundance of impervious surfaces in the urban environment. The rapid runoff from roof surfaces can exacerbate flooding and increase erosion, and, in cities with combined sewers, can result in raw sewage being discharged directly into waterways. Vegetated roofs can retain stormwater within the media profile and retention layers and reduce the volume discharged. Additional layers may be incorporated into the vegetated roof to provide detention, allowing the assembly to store stormwater for a determined amount of time and then release it slowly from the roof over several hours, reducing the impact of the storm event on the existing stormwater infrastructure.
DLCC plaza in Pittsburgh, PA

Energy efficiency

Vegetated roofs can help reduce heating and cooling demands on building systems.* Growing media within the profile of the vegetated roof assembly provides some insulation value, and plants provide a cooling effect via evapotranspiration. These benefits can help reduce temperature swings at the membrane level and may help reduce wear and tear on building mechanicals as well.
* Energy cost savings are not guaranteed and the amount of savings may vary based on climate zone, utility rates, radiative properties of roofing products, insulation levels, HVAC equipment efficiency, and other factors.
DLCC plaza in Pittsburgh, PA

Help increase roof membrane longevity 

Waterproofing membranes covered by vegetated roofs may have a longer life span than exposed membranes because the vegetated roof system helps protect the substrate from ultraviolet radiation and the extreme fluctuations in temperature that can cause roof membranes to deteriorate.

Jacob K Javits Center in New York City

Help reduce Urban Heat Island Effect

Urban areas are generally 2°F - 5° F warmer than surrounding rural areas; this is known as the Urban Heat Island Effect. On top of that, the United States Environmental Protection Agency projects an increase in aggregate temperature for urban regions. Through evapotranspiration, vegetated roofs can help mitigate the Urban Heat Island Effect.

Opportunities for design

Vegetated roofs offer exciting opportunities for architectural design. A vegetated roof can allow a structure to merge with the surrounding landscape, provide a dramatic accent, or reinforce the defining aspects of the structure's geometry. Vegetated roofs are frequently integrated into the design of hospitals and care facilities to provide a more restful and restorative environment for patients. Vegetated roofs may also help enhance property values in city locations where outdoor space is limited. These garden areas can add serene communal space in urban areas, improving quality of life for city dwellers. Green Roofs for Healthy Cities have identified a number of benefits of vegetated roofs. The benefits include the potential removal of airborne dust, pollutants, and greenhouse gasses, as well as sound reduction and production of oxygen.

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Siplast Vegetated Roof Systems 

Whether you're looking for a single-source vegetated roof solution, or need assistance developing complex assemblies for your unique project, the Siplast ParaGREEN™ line of Vegetated Roof Solutions can help you meet and exceed your vegetated roof demands. Plant selections appropriate for extensive assemblies include sedum, grasses, wildflowers, and other low-maintenance vegetation. ParaGREEN Intensive Vegetated Systems can be used for elaborately designed roofscapes that are intended for pedestrian access, and with deeper media profiles, a more diverse plant selection, including trees and shrubs, is possible.

From membrane through vegetation, Siplast provides complete vegetated roof solutions to meet your project needs, ensuring full-system compatibility and comprehensive system guarantees.**

In your journey to provide thriving green and amenity spaces, Siplast is with you every step of the way.

** Additional requirements apply. Contact Siplast for more information. Refer to siplast.com for more information on warranty and guarantee coverage and restrictions.
Teranap Waterproofing Membrane installed at Javits in NYC

Teranap Vegetated Roof Waterproofing System

Vegetated roofs add a great deal of aesthetic appeal, and utility, to a building project, but they also create significant waterproofing challenges.

For over 30 years, Teranap has met the needs of these demanding applications. Teranap vegetated roof applications can be specified with many landscape options, including both extensive green and intensive green assemblies.

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Vegetated roof in NYC

Parapro Vegetated Roof System

For vegetated roof applications where project circumstances, local regulations, or a tight construction schedule make the application of sheet materials difficult, Siplast offers a proven high-performance option: liquid-applied Parapro.
 
The Parapro System is built on advanced polymethyl methacrylate (PMMA) technology developed for demanding waterproofing applications. PMMA's strong durability make Parapro a smart choice for vegetated roofs and planter waterproofing.
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