What is a Green Roof?

What is a Green Roof?

A green roof, also sometimes called a living roof, is a specially designed roof that is partially or completely covered with vegetation and soil instead of traditional roofing materials like shingles. There are two different categories of green roofs:

• Extensive Green Roofs: These are like a low-maintenance lawn on your roof. They have a thin layer of soil and hardy plants that don’t need much care. Think of grasses, sedums, and small plants that can handle tough conditions.
• Intensive Green Roofs: These are more like full-fledged gardens with deeper soil and a variety of plants. They require more care and stronger roof support but offer many more options for planting and design.

How do Green Roofs Work?

Green roof systems are actually quite easy to understand and install. They start with a waterproof membrane that protects the building or home from leaks. On top of this membrane, several layers are added: a root barrier to prevent plants from penetrating the roof, a drainage layer to manage excess water, and a filter layer to keep the growing plants in place. 

The soil layer is specially engineered and is meant to support a variety of plants that are chosen for their ability to thrive in rooftop conditions. These plants absorb rainwater, reducing runoff and easing the load on drainage systems. 

Why have a Green Roof?

Green roofs offer a multitude of benefits for homeowners and business owners alike, making them a smart and sustainable choice for buildings here in Northern Michigan. 

1. Stormwater Management: Green roofs absorb rainwater, reducing runoff and helping to prevent flooding. This alleviates pressure on local drainage systems and minimizes the risk of water-related damage.
2. Air Quality Improvement: The plants on green roofs filter pollutants and carbon dioxide from the air, contributing to a cleaner and healthier environment. 
3. Energy Efficiency: Green roofs act as natural insulators, keeping buildings cooler in the summer and warmer in the winter. This can lead to significant savings on heating and cooling costs throughout the year.
4. Extended Roof Lifespan: The layers of a green roof protect the underlying roofing material from UV radiation, extreme temperatures, and physical wear and tear. This can prolong the lifespan of the roof, reducing the need for frequent repairs or replacements.
5. Increased Property Value: A green roof can enhance the aesthetic appeal of a building and create additional usable space.

Disadvantages of a Green Roof: How Much Does a Green Roof Cost?

While green roofs offer numerous benefits, they also come with certain drawbacks that homeowners and business owners in Traverse City should consider before installation. One of the most significant disadvantages of green roofs is their initial high cost. Installing a green roof can be more expensive than a traditional roof due to the additional layers and specialized materials required. Costs vary widely depending on the type of green roof, the size of the roof, and how difficult installation is. On average, green roofs can cost anywhere between $10 and $50 per square foot on materials alone. It is important to mention that your entire roof does not need to be covered in green roof materials, just one section can be selected.

Green roofs are also heavier than traditional roofs, especially when fully saturated with water. This additional weight means that the building must have adequate structural support to handle the load.

Next Steps: How to Build a Green Roof

Building a green roof is a rewarding project that can transform your home or building into a sustainable and beautiful space. Whether you are a homeowner or a commercial business owner, here’s a brief step-by-step guide to help you get started:

1. Assess your building to be sure it can support the additional weight. Check local building codes and zoning regulations to ensure you do not need a permit.
2. Choose the type of green roof you would like and begin planning the layout including placement of plants, pathways, and any additional features you need. 
3. Gather materials including the waterproof membrane, root barrier, drainage layer, filter layer, special soil, and plants. 
4. Prepare the roof by cleaning its surface and repairing any damage. Begin installing each layer of the roof.

Partnering with a Green Roof Installation and Maintenance Expert

Green roofs offer fantastic benefits, from energy efficiency to stormwater management, however, they are not always a fit for everyone due to cost and need for structural stability.

If a green roof seems like a project you would love to invest in, the design, installation, and upkeep can be complex. This is where partnering with a professional can make a significant difference.

TruNorth Landscaping specializes in green roof design, installation, and maintenance. Our team ensures your green roof is not only beautiful but also durable and efficient. We handle everything from structural assessment to plant selection, providing expert guidance every step of the way.

By choosing TruNorth, you’re partnering with local experts dedicated to enhancing the sustainability and appeal of properties in the Traverse City area. 

Ready to get started designing your green roof? Get started by filling out our contact form today.