Vegetated Roofs

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What Are Vegetated Roofs?

Vegetated Roofs

Vegetated roofs – or ‘green roofs’ – represent one of the newest trends in commercial roofing. They consist of roof decks topped with layers of soil, gravel and plants to create roof-top gardens that double as roof finishes.

While vegetated roofs add significantly to overall building loads and often require added framing, they also provide a number of benefits to building occupants and the community.

A vegetated roof has countless benefits on a building. This roof absorbs train water, acts as an insulation medium, creates a habitat for wildlife, and provides an aesthetically pleasant landscape. 

There are two types of vegetated roofs: intensive and extensive vegetated roofs. An intensive vegetated roof is usually thicker and supports a wide plant variety. However, they are quite heavier and need more maintenance. On the other hand, extensive roofs are a bit shallow and lighter than intensive roofs, and require minimal maintain ace.

The benefits of vegetated roofs include:

Storm water management. A vegetated roof gets rid of the negative effects of storm water in many ways. The roof retains a portion of the rain water they capture. This minimizes the amount of water flowing through a roof.

Most property owners prefer vegetated roofs to minimize the impact of storm water on infrastructure.

Lowered energy costs. Vegetated roofs reduce the flow of heat into and out of surfaces. This is beneficial – especially during the winter – due to the reflectivity of the plant leaves and the minimization of evaporation rates.

Longer roof life. The waterproofing material on a roof degrades with time. A typical commercial roof may need to be replaced often. Roofs degrade due to two major reasons: photodegradation caused by sunlight and mechanical degradation as a result of temperature fluctuations. A vegetated roof gets rid of these effects. Sunlight does not reach the membrane under a vegetated roof. A typical roof is very inefficient as it is affected by temperature extremes. The good thing about a vegetated roof is that it experiences a temperature swing of less than 10 degrees.

Environmental benefits. Although vegetated roofs are not similar to native landscapes. A vegetated roof can attract and act as a habitat for a number of insects and birds.

To summarize: vegetated roofs provide an outdoor space for workers or residents and also help managers to market the building’s eco-friendly design. The vegetation provides shade to improve energy efficiency and protect the building from solar heat. The plants found on green roofs filter contaminants from the air to improve air quality and also reduce storm water runoff to reduce water pollution in nearby streams.

If you are interested in the repair, maintenance or installation of vegetated roofs on your commercial property, contact Central Roofing Company™ today.