Geofoam – Green Roofs

Vegetative Green Roofs

Green roofs aren’t just trendy. They’re smart, sustainable, and pair well with urban construction. However, creating a living rooftop that’s both functional and long-lasting takes more than soil and plants. That’s where EPS Geofoam can help. Lightweight and versatile, Geofoam is the perfect foundation for modern green roof construction.

How Is Geofoam Used in Green Roof Construction?

Installing a green roof means balancing weight, drainage, and insulation. Geofoam plays a critical role in that equation. Here are some ways that it can be used:

• Lightweight Filler Beneath Planter Beds & Hardscaping
• Creating Multi-Level Terraces or Contoured Surfaces
• Thermal Insulation Layer to Improve Energy Efficiency
• Drainage Support Without Heavy Aggregates
• Slope Adjustment for Water Runoff and Structural Flow

Whether you’re designing a rooftop garden, terrace, or full green roof system, Geofoam makes it easier to control layout and weight while still supporting lush vegetation and usable spaces.

Why Choose Geofoam for Green Roof Systems?

So, why is geofoam a good solution for a green roof project? A number of reasons:

• Exceptionally Lightweight: Geofoam is very lightweight, so it dramatically reduces the structural load on rooftops. This is especially important for older buildings or those with limited load capacity.
• Design Flexibility: Geofoam can be easily shaped and stacked to create levels, slopes, and custom contours. Think about outdoor seating areas, walkways, and varied planter heights.
• Built-In Insulation: EPS can offer excellent thermal performance. This helps with energy savings and temperature regulation inside the actual building.
• Fast Installation: Geofoam blocks are clean, lightweight, and easy to move. This is all really important when working in tight rooftop spaces.
• Non-Toxic & Plant-Safe: EPS does not leach chemicals or degrade over time. This makes it safe for use near soil, plants, and stormwater systems.

It’s not just about what goes on top—what’s underneath your green roof matters. Geofoam gives you a lightweight yet stable foundation that supports both design and performance.

Frequently Asked Questions about Geofoam and Green Roofs

Is EPS Geofoam strong enough to support rooftop landscaping features?

Yes, when topped with a good growing media, concrete pavers, or structural covers, Geofoam offers excellent load-bearing capability. It’s often used under planter boxes, patios, and outdoor seating areas without adding excess weight to the roof structure.

Does Geofoam help with rooftop drainage?

While Geofoam itself is water-resistant and doesn’t absorb much water, it works well with drainage mats and filter fabrics to maintain proper water flow. Plus, its customizable shape helps create slope and contour. This improves water runoff and avoids ponding.

How does Geofoam affect building energy efficiency?

EPS Geofoam has excellent insulation properties. This means it can reduce heat loss in colder months and help keep buildings cooler during the summer. It’s a great way to add R-value while contributing to the green roof’s environmental performance.

Start Your Green Roof Project Off Right—with EPS Geofoam

Ready to transform your rooftop into something greener? EPS Geofoam from CMI Insulation gives you a lightweight, reliable base. Let’s build something that looks good and performs even better!

We Proudly Service These Areas:

• United States: Utah, Colorado, Arizona, New Mexico, Texas, Nevada, California, Oregon, Washington, Idaho, Montana, Wyoming

Canada: British Columbia