Grass Block Pavers: The Green Alternative to Traditional Driveways

Grass block pavers, sometimes called turf block or grow-through pavers, offer an eco-friendly alternative to asphalt, concrete, and standard pavers. These pavers are crafted from concrete or recycled plastic and feature open cells that let grass grow through them. Not only do they look natural, but they’re also great for the environment, especially in driveways and parking areas.

Where Can You Use Grass Block Pavers?

Grass block pavers work best on driveways, parking spaces, and walkways. They are particularly effective on slopes where erosion is a concern. The open design allows water to pass through, reducing runoff and keeping the ground stable.

When to Avoid Grass Block Pavers

Grass block pavers aren’t ideal for every situation. For patios, they might not be the best choice. “A chair wouldn’t sit level on it,” says Richard Risner, principal at Grounded, a landscape architecture firm in Solana Beach, California. “Walk on it in heels, and you’ll sink.” The tufts of grass can be uneven, making them less suitable for lounging or entertaining. For patios, regular pavers with narrow strips of grass between them are a better option. If you’re set on using grass block pavers, opt for ones with smaller cells and trim the grass to stay level with the paver tops.

Pros and Cons

Pros:

1. Reduces Stormwater Runoff: It helps to minimize stormwater runoff, which is a major source of water pollution. When rain flows over concrete or asphalt, it picks up harmful pollutants and carries them into waterways. Grass block pavers allow water to seep into the ground, reducing erosion and helping recharge groundwater.
2. Eco-Friendly: It promotes a natural environment. They support groundwater recharge by allowing rain to seep back into the earth, filtering out pollutants, and keeping water clean. Plus, the grass helps cool the area around your driveway through the process of transpiration, unlike asphalt which absorbs and radiates heat.
3. Aesthetic Appeal: Let’s face it, patches of lush grass are far more attractive than slabs of concrete or asphalt. Grass block pavers give your property a greener, more inviting look.

Cons:

1. Maintenance Needs: Like any grassy area, grass block pavers require regular upkeep. They need watering, mowing, and fertilizing, just like a traditional lawn. If you prefer low-maintenance solutions, concrete or asphalt might be better options.
2. Higher Cost: Grass block pavers can be pricier, costing between $4 to $6 per square foot compared to $3 to $4 for concrete or asphalt.
3. Shorter Lifespan: Grass block pavers typically need replacement every 10 to 15 years in residential areas, whereas concrete and asphalt can last 20 to 30 years. High-traffic commercial areas may see them wear out in as little as five years.
4. Accessibility Issues: These pavers are not ADA-compliant. Their uneven surface can be problematic for wheelchair users.

Choosing the Right Type

• Concrete Pavers: Ideal for driveways and parking areas because they can withstand the weight of vehicles.
• Plastic Pavers: Best for smaller cars or guest parking areas. They’re also a good choice for pathways where heavy vehicles aren’t a concern. Plastic pavers should have small cells to prevent sinking.
• Stable Grid: This isn’t exactly a paver block but a reinforced plastic netting that’s great for preventing erosion on slopes. It’s especially useful in commercial settings like highway roadsides or steep residential lawns.

Installing With A Quick Guide

Installing grass block pavers is like building a layered cake. You’ll need five layers to get it right:

1. Base Layer: Start with a mix of crushed gravel and sand to level the surface.
2. Paver Layer: Place the pavers down.
3. Sand Layer: Add another layer of sand and compact it.
4. Topsoil Layer: Spread a layer of topsoil over the sand.
5. Grass Layer: Plant grass seeds or sod into the cells.

After planting, stay off the grass until it’s well-established. Unless you’re a seasoned DIYer, consider hiring a professional for the job.

Choosing and Planting Grass

Sprinkling seeds into the cells is the best way to grow grass in your pavers. Although it’s slower, the deeper root systems will make your grass hardier. If you’re looking for instant results, opt for sod. Pick drought-tolerant varieties like buffalo grass, zoysia, Bermuda, or St. Augustine to minimize water use. For those who live in arid climates or dislike mowing, filling the cells with gravel can provide the same water-permeable benefits without the upkeep of grass.