Top 5 Green Roof Materials: Recyclable or Biodegradable Picks

Choosing roofing materials can be difficult. Eco-friendly materials may be durable and recyclable, but they can be costly. Cheaper options may present hazards to the environment and are less durable. However, it's good to know your options if you want to choose the most durable and eco-friendly option for your roof. 

This guide presents the top five most popular roofing materials that are either recyclable or biodegradable (or both).

1. Metal

Metal is one of the most versatile, durable types of roofing available. Aesthetically, most people find it attractive, particularly those who are into modern, sleek styles. Metal isn’t biodegradable, as it’s a very sturdy, naturally occurring material. However, metal is recyclable and can be used repeatedly without issue. Metal also presents high energy efficiency, reflecting sunlight away from a building. It is durable against water and discourages water and snow collection. Despite its lightweight material, it is resistant to lifting during high winds, making it great for many climates. It is pretty costly, however.

2. Slate

Slate is highly recyclable and entirely biodegradable, made from a naturally occurring metamorphic rock. Slate roofs are highly durable and add a classic, timeless charm to a home. However, it’s difficult and expensive to install and repair. Arguably, however, it is one of the most environmentally friendly options while maintaining durability.

3. Clay

Clay is made from natural soil and minerals, but it is not traditionally biodegradable (it can be broken down into harmless powders). Additionally, clay tiles can be reused and repurposed for many construction projects and purposes. It’s also recyclable. Clay roof tiles can insulate your home from harmful temperatures, can last up to a hundred years with proper care, and are resistant to extreme weather and fire. However, clay roofing is quite heavy, and not all homes can accommodate it. The individual tiles are fragile and can break easily during installation or repair. Like many eco-friendly roofing materials, clay is pretty expensive as well.

4. Wood

Wood is a natural resource derived from trees. It is highly biodegradable as long as it is not treated with synthetic additives. Wood roof shingles can be made with repurposed or reclaimed wood, reducing resource waste. As long as the wood is sustainably sourced, it is environmentally friendly. It is excellent for insulating heat during warmer months. However, wood is susceptible to rot, fire, pests, and water damage when not properly maintained, so it can be challenging to work with over time.

5. Rubber

Rubber is an excellent option for a roof if you’re worried about the elements. Rubber is highly resistant to lightning, water, and fire, including wind and sun damage. Rubber is also excellent for insulation, keeping your internal home temperatures stable and your energy bills lower. It’s usually made up of recyclable materials and is entirely recyclable itself. It takes longer to biodegrade, but ultimately, it is biodegradable. You can even get a home insurance rate reduction with certain companies due to the durability of rubber roofing! However, rubber isn’t as versatile in design and requires expertise to install, so you’ll need specific roofing contractors. It’s more expensive than asphalt but costs a lot less than other options like metal.

Climate-Friendly Roofing

No matter what type of roofing best fits your aesthetic and eco-friendly preferences, choosing one that best suits your climate is imperative. Below are some states with wildly varying temperatures and ideal roofing options to accommodate them.

Alaska

Alaska is the coldest state in the United States, as it’s much farther North than any other state. Additionally, it gets less sunlight, with some regions going completely sunless for months at a time. Roofing materials here should be durable to snow and extreme cold. Metal is resistant to high temperatures and reduces snow accumulation that can wear down a roof. Clay is also resistant to snow and hail. Rubber roofing is waterproof, freezeproof, and durable against rain, snow, and wind damage.

Hawaii

Hawaii's islands receive more rain than any other US state. This wet, hot climate requires roofing that can withstand a good amount of rain. Metal and rubber roofing are particularly water resistant.

Arizona

Arizona is very hot and dry with little rain. No matter what roof you choose, lighter colors will keep your home’s interior cooler due to light reflection. Metal roofing also has the same effect and can withstand higher temperatures. Due to Arizona’s dry and hot environment, wood can be a poor choice here.

Missouri

Roofers in Kansas City and St. Louis are seeing an uptick in metal roofing. Despite the state’s temperate climate compared to other states to the North and South, midwestern areas like Missouri are experiencing an increase in temperature and inclement weather. Metal can also be great for windy areas when tornadoes hit. Alternatively, rubber is highly resistant to extreme weather conditions like wind, rain, heat, and cold, a wise choice if you’re not picky about looks.

Conclusion

When it’s time to choose a new roof for your home, it may be wise to consider the environmental impacts of the materials you use. Recyclable and biodegradable materials like rubber, wood, and slate can be durable and great for the environment. While not biodegradable, metal provides excellent energy efficiency, is naturally occurring, and can be recycled endlessly. Choose the material that is the most durable against climate conditions in your area.