Permeable Paving

What is permeable paving?

Instead of traditional concrete or asphalt, these new types of pavement allow rainwater to drain through their paved surface, and soak naturally into the ground underneath, instead of sheeting off or pooling on the surface. Permeable pavements are self-draining systems.

There are several different types that are commonly used for patios, walkways, driveways and landscaping.

 Permeable

With larger spaces between stones than typical brick hardscaping, but with the same great look and feel, permeable pavers allow water to drain through the cracks and soak into the soil below.

 Pervious

Similar to traditional concrete, however, pervious concrete allows water to pass through at up to 1000  inches/hour! It is very important to have a certified, experienced installer to apply this practice. Watch this video to see it in action.

 Porous

Looks just like traditional asphalt, but allows water to pass through it at rates up to 600 inches/hour.

 

 Grid-lattice

Plastic grid systems that can be filled in with grass, gravel, or sand. These are best in low traffic locations.

 

Why go with permeable paving?

In addition to enhancing the look of your home, these surfaces can help solve drainage problems, and restore use of a soggy area you could not access before. If you have puddles or drainage issues with your existing driveway or walkways, or are thinking of replacing any of these surfaces, consider the many benefits.
  • Reduce erosion and ponding.
  • Increases natural irrigation of your yard, reducing water use and cost.
  • Can reduce basement flooding caused by rain storms.
  • Can create a longer-lasting surface compared with conventional concrete.
  • Comes in more colors and shapes than traditional concrete or asphalt.
  • Protect local streams and Puget Sound.

For a help deciding which type of pavement would be right for you, or help with a design – talk to the Community Conservation Team, and invite them out to your property to help design your project. Email ccteam(at)snohomishcd.org or call 425-335-5634, ext. 119.