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The Tree Grate System That Won't Sink, Settle, or Fail Your Streetscape

Stormflow's Tree Grate System pairs laser-cut galvanized steel with our permeable recycled rubber surfacing for a flush, sealed, permanent solution. No sinking, no gaps, no on-site mixing, just a tree grate that's ready to install and built to last decades.

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4.9 Google Ratingpermeable tree surrounds

Every 1,000 square feet of Stormflow Surfacing keeps 300 tires out of the landfill

Choosing Stormflow means more than just a solid, flood-ready surface. It means hundreds of tires repurposed into something useful, keeping waste out of landfills and putting sustainability right under your feet.

Permeable Tree Grates

A permanent, high-performance solution that protects urban trees while eliminating common sidewalk hazards.

Key Benefits of Stormflow Tree Grates

Highly permeable design allowing up to 5,800 gallons per hour per square foot to reach tree roots

Rigid, permanent construction secured flush with the sidewalk to prevent sinking and trip hazards

Laser-cut 11-gauge galvanized steel frame available in custom sizes

Removable and replaceable for new planting or maintenance access

Faster, cleaner installation with reduced equipment and traffic control needs

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“300 recycled tires used in 1,000 square feet, It acts like one big expansion joint that allows for the product to flex in our Canadian winters.”

CTV NEWS KITCHENER

Permeable pavers that are durable
sustainable and cost-effective

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Flexible

Can do everything traditional paving can do – and more!

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Safe

No slips, cracking, or water pooling and ice build up

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Sustainable

A simpler ground water management solution

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Eco-Friendly

Recycles over 300 tires for every 1,000 square feet

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Commercial Drainage Solutions

By allowing water to infiltrate through its porous surface, Stormflow Surfacing effectively manages stormwater runoff. In commercial settings such as parking lots or plazas permeable paving mitigates the risk of flooding and erosion.

Key Benefits Permeable Parking Drainage

Stormwater safe public spaces- No cracking or water pooling

Entire parking lot functions like a storm drain with a superior design aesthetic

Low maintenance and resistant to UV Rays, muriatic acid, gasoline, diesel, motor oil transmission fluid, hydraulic fluid, and other hostile materials that destroy the looks and function of traditional surfacing materials.

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Research-Backend Pavement

Stormflow Surfacing has created a product that helps reduce the need for expensive stormwater management systems, improved for commercial applications. Our research has been conducted by pavement researchers at University of Waterloo. Learn More

permeable parking lot

A badge of trust from happy customers

4.9 Google Overall Rating

Mary Visser Kerr

5 star rating

Our condominium’s small parking lot and a short walkway were repaved in June 2023 using Stormflow and we are very pleased with the results. Looks and feels great. The work crew was always on time, professional and responsive in their discussions throughout the project and open to any modifications to comply with municipal requirements...

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Derek Lippert

5 star rating

Very interesting and unique product with a wide variety of applications. We recommended having it installed at a daycare in Stoney Creek as a replacement for an inferior product that had failed.

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Our Permeable Surface Colour Collection

Black colour swatchgreen surface colourbrown surface colourbrown surface colourbrown surface colourred surface colourblue surface colourtan surface colour

Resources for Every Stage of the Decision Process

From the first sketch to the final pour, the Stormflow Resource Center gives you access to everything you need to design, specify, and install with confidence. Whether you’re planning a new build, responding to a tender, or getting ready for install day, this is your one-stop destination for expert tools, clear documentation, and practical support.

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Designing

Explore inspiration, dig into the technical details, and get expert guidance for bringing your vision to life. The Resource Center includes a curated gallery of real-world applications, plus downloadable technical specifications and CAD drawings to help you plan with precision.

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Tendering

When it’s time to move forward, we make the quoting process simple. Request a formal quote directly from the Resource Center, with all the context and specs in one place. We’ll work with you to ensure accurate pricing based on your project’s scale and needs — fast, clear, and ready for procurement.

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Installing

Installation is straightforward with the right tools in hand. Access step-by-step guides, connect with trusted Stormflow installers in your area, and review warranty details before the job starts. Whether you're overseeing a team or coordinating with a contractor, the Resource Center helps keep your install smooth and stress-free.

Explore everything at your own pace. The Resource Center is self-guided, with tools and documentation built to support the longer timelines of planning and procurement.

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Frequently Asked Questions

Have questions about Stormflow Surfacing?

When and where can Stormflow Surfacing be installed?

Stormflow Surfacing can be installed anywhere that traditional hardscape surfaces can be installed. The advantage to Stormflow can be installed up to 33% degrees of slope. Due to the product being moisture cured, it needs to be installed between 10-32 degrees C with no rain in the forecast.

What are the main advantages of Stormflow versus asphalt and concrete?

Stormflow helps to alleviate stormwater issues. Water doesn't pool and puddle on the surface like it does on concrete and asphalt (this also means so ice in the winter). The product also is made from recycled materials, for every 1000 square feet of Stormflow poured we repurpose 300 tires.

How does Stormflow withstand the harsh Canadian winters?

Stormflow can be shovelled and maintained just like any other surface in the winter (shovel, snow blower or plow). You will also find that you can reduce salt use as water runs through instead of having ice on the surface. We recommend back dragging when using a snowplow. Another main advantage of Stormflow in the winter is our product doesn't crack, due to the base and the rubber used in the surface. It acts like one big expansion joint, allowing the surface to look great year after year.

Why should I use permeable pavement?

Stormflow is porous, which means water flows through the surface back into the water table. This helps cities deal with undersized storm drains during large rain events.

Are there authorized installers in my area?

With numerous installers stationed strategically throughout Ontario, we are happy to help get in contact with them.
Areas currently served for residential customers:
- Stratford and surrounding area
- Kitchener, Waterloo, Elmira, Cambridge, Guelph and surrounding
- Hamilton, Brantford, Burlington, Oakville, Stoney Creek and surrounding areas
- Select areas of the GTA

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Applications

Bike LanesBoulevardsDrainage StripsDrivewaysGolf CoursesParking LotsPatiosPathwaysSidewalksTrailsTree Surrounds

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