Permeable pavements have become a cornerstone of environmentally friendly site design, helping manage stormwater, reduce runoff and support healthier landscapes. But in cold climates, their value goes beyond simple drainage. Winter conditions put systems to the test and only resilient pavements that can withstand freeze-thaw cycles, snow, ice and deicing practices will maintain performance year after year.
For green industry professionals, ‘resilience’ means selecting materials and designs that adapt to changing conditions, resist structural forces and continue to function when traditional rigid pavements fail. Understanding how different permeable surfaces respond to winter stress and how to maintain them effectively ensures that stormwater management goals are met while also protecting investments in infrastructure and safety.
How Winter Affects Permeable Pavements
Typically, permeable pavement systems such as porous asphalt and concrete consist of a matrix of interconnected voids that allow water to infiltrate through the surface. This is made possible by reducing reduced fine aggregates in the mix, which also enables filtering pollutants from the stormwater. While effective in moderate climates, this infiltration process can be disrupted in cold weather by several factors.
Clogging from deicing agents
The first one is deicing agents and sediments. During the winter months, maintenance crews often use sand, salt or other deicing chemicals to keep surfaces safe by melting existing ice and snow or preventing new ice from forming. These tiny particles can accumulate in the pores, compromising long-term infiltration performance and leaving meltwater to refreeze on the surface.
Freeze-thaw tension
Water that becomes trapped in the small pores of rigid pavements expands when it freezes in cold climates. The repeated cycle of freezing and thawing creates internal stress that can cause cracking, spalling and surface delamination of permeable pavements. Over time, this damage reduces structural integrity and permeability of the pavement, making it brittle, leading to cracking and raveling.
Reduced drainage efficiency
Once the void spaces of permeable pavements are clogged or cracks form, the pavement’s drainage capacity and efficiency begin to decline. Making things worse, standing water and ice can lead to surface slickness, safety hazards and additional freeze-thaw deterioration.
Invisible Structures
Comparing Permeable Pavement Materials
A permeable pavement material can help landscape professionals sideline such challenges and limitations. To make the right decision, it is important to evaluate available choices through the lens of its winter performance.
Porous concrete
Porous concrete consists of a cement matrix with reduced fines, creating voids that allow water infiltration. While effective in moderate climates, it is highly susceptible to freeze-thaw damage if moisture is trapped in its pore structure. Deicing salts can further accelerate deterioration by penetrating the concrete and disrupting its chemical stability.
Porous asphalt
Similar to porous concrete, this material features interconnected voids that permit water movement. However, its binder can become brittle in freezing conditions, leading to cracking and raveling. In addition, the pores can clog easily with sand and deicing materials, limiting performance over time.
Interlocking concrete pavers
Concrete blocks are typically impervious themselves. However, they are installed with permeable material in the joints that allow for water infiltration through the gaps between units. While their modular design makes them easier to maintain than monolithic surfaces, their performance depends heavily on the stability of the joint aggregate. If fine particles or salts clog the joints, infiltration decreases.
Plastic porous pavers
Rigid and flexible plastic porous pavers offer an alternative approach. Because they are made of flexible materials, they can move slightly with the ground during freeze-thaw cycles without cracking. Category-leading systems offer up to 92 percent void spaces, which are filled with either grass or gravel infill. The higher proportion of void spaces mitigates clogging issues and encourages continuous infiltration. It also helps reduce snow and ice accumulation by allowing meltwater to drain away quickly. Additionally, they are also lighter to install and easier to maintain compared to other systems.
Winter Maintenance Best Practices
Regardless of the permeable pavement of choice, proper maintenance during and after winter weather is key to preserving the surfaces. Here are a few best practice recommendations:
- Adjust snow removal equipment. When plowing snow from permeable surfaces, set plow blades about an inch above the surface to prevent scraping or dislodging materials. Installing skids or shoes on the plow helps maintain this clearance. Snowblowers can also be effective, provided the intake height is adjusted to avoid surface contact.
- Control blade angle and snow placement. Angle the plow blade to push snow toward the sides rather than straight ahead. This technique keeps pathways clear and prevents large piles that could block infiltration areas. Snow pushed to the sides melts more evenly and drains more efficiently.
- Pick deicing materials wisely. Select deicing products that minimize environmental and structural impact. Liquid deicers or non-chloride options, such as calcium magnesium acetate (CMA), are less likely to clog pores or harm vegetation. Avoid using sand, which can quickly fill surface voids and joints.
- Inspect and clean regularly. After snow season, inspect the pavement for sediment buildup or clogged areas. Routine sweeping or vacuuming can restore infiltration capacity. For systems with aggregate infill, topping off displaced material helps maintain even support and permeability.
- Monitor subsurface drainage. Proper base construction and subsurface drainage are critical to performance during freeze-thaw conditions. Periodic checks can help ensure that underdrains or storage layers remain free of sediment and function as intended.
Delivering Permeable Surfaces That Endure
As climate patterns continue to shift and extreme weather events become more frequent, designing pavements that can adapt to both drought and severe winters will be essential. For green industry professionals, that means viewing every landscape decision not as static infrastructure, but as living stormwater management, capable of flexing with the seasons and the climate itself.
