Key takeaways
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Permeable interlocking concrete pavement depends on open, aggregate-filled joints; maintenance must protect infiltration as well as surface appearance.
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CMHA guidance permits conventional snow-removal equipment but warns operators to protect pavement edges and avoid practices that displace units or joint material.
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Sand can clog permeable joints. If it is used, CMHA says it should be removed by vacuuming in spring.
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The correct deicer, equipment and maintenance frequency depend on the specific paver system, manufacturer instructions, site conditions and governing specifications.
Permeable pavers do not stop being a stormwater system when winter begins. The surface still has to carry traffic, manage snow and ice, and preserve the open joints that let water move into the aggregate base.
That creates a different maintenance question from ordinary pavement: Will the winter operation keep the site safe without undermining infiltration or disturbing the pavement system?
The answer begins before the first storm—with records, inspection, operator instructions and a plan for spring cleaning.
Understand What Must Stay Open
Permeable interlocking concrete pavement, often abbreviated PICP, uses concrete units separated by joints filled with small, open-graded aggregate. Water enters through those joints and moves into an open-graded base and subbase designed for storage and drainage according to the project design.
The Concrete Masonry & Hardscapes Association maintenance guide explains that surface infiltration can decline when sediment accumulates in the joints. That is why sweeping, vacuuming and control of sediment sources are performance tasks—not merely cosmetic ones.
The Pre-Winter Inspection
Before freeze-thaw cycles and snow operations begin, walk the entire pavement and document:
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settled, rocking, cracked or displaced units;
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low areas where runoff or meltwater collects;
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missing or contaminated joint aggregate;
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sediment entering from planting beds, unpaved shoulders or construction activity;
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damaged edge restraints;
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utility cuts or previous reinstatement areas;
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drains, overflows and adjacent discharge points;
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the actual paver manufacturer and project maintenance specification.
Do not diagnose the system from the surface alone when performance has materially changed. Design, base condition, drainage, sediment loading and prior maintenance can all matter.
Snow Plowing Without Creating a Repair Job
CMHA states that PICP can be plowed with conventional snow-removal equipment. The maintenance plan should still address blade condition, operator speed, pavement transitions, protruding edges and site-specific obstructions.
Practical operator rules
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Mark transitions, curbs, drainage structures and vulnerable edges before snow covers them.
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Inspect for displaced units or vertical lips that could catch a blade.
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Follow the equipment and paver-system requirements; consider protective blade details where the project documents call for them.
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Do not pile contaminated snow where sediment-laden meltwater will wash directly across the permeable surface.
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Inspect after major storms and correct displaced joint aggregate or units under the applicable installation guidance.
Deicers and Traction Sand Are Not Interchangeable
The safest specification is not a universal product name. Deicer compatibility can depend on the concrete paver, exposure history, application rate, weather and manufacturer guidance. Use only products and rates permitted by the project specifications and paver manufacturer.
Traction sand creates a separate issue. CMHA’s deicing FAQ says sand is not recommended on PICP because it can enter and clog the joints. If sand is used, it should be removed with vacuuming in spring. That means the winter decision also creates a documented spring obligation.
| Winter action | Main risk to manage | Follow-up |
|---|---|---|
| Plowing | Blade catches edges or displaced units | Post-storm inspection |
| Deicing | Incompatible chemistry or overapplication | Follow manufacturer/specification |
| Traction sand | Joint clogging | Spring vacuum removal |
| Snow storage | Dirty meltwater crosses pavement | Choose storage area deliberately |
| Emergency patching | Wrong material blocks joints | Use system-compatible repair |
Spring Recovery: Inspect, Test, Clean, Refill
When winter operations end, remove accumulated debris and inspect joint condition. CMHA describes regenerative-air and vacuum-sweeping approaches for restoring infiltration where sediment has accumulated. The correct equipment and number of passes depend on the site and degree of clogging.
After cleaning, refill joints with the aggregate required by the system and restore disturbed areas according to the project documents. Do not substitute ordinary sand into a permeable joint because it looks convenient.
Where the owner tracks stormwater performance, keep maintenance dates, equipment, observed problems, cleaned areas and repairs. Records help distinguish routine surface loading from a deeper design, drainage or construction problem.
A Dealer and Contractor Handoff Checklist
Before the project closes, identify who receives:
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the paver and joint-aggregate product information;
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approved deicer and maintenance limitations;
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snow-plow transition map;
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vacuum-cleaning expectation and frequency;
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spare units and replacement aggregate;
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installer, designer and owner contacts;
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the project-specific inspection and reporting schedule.
A permeable pavement sold as a system should be handed over as a system. The owner needs more than a product name; the owner needs the maintenance logic that preserves the intended function.
Frequently Asked Questions
Can permeable interlocking concrete pavers be snowplowed?
Yes. CMHA guidance says PICP can be plowed with conventional snow-removal equipment. Operators should identify edges and transitions, correct protruding or displaced units, and follow the project and equipment requirements.
Should traction sand be used on permeable pavers?
CMHA does not recommend sand on PICP because it can clog the aggregate-filled joints. If sand is used, CMHA says it should be removed with vacuuming in spring.
Can any ice-melting product be used on concrete pavers?
No universal approval should be assumed. Follow the specific paver manufacturer’s current instructions, the project specification and application-rate limits. Compatibility can vary by product and exposure.
How are clogged permeable paver joints restored?
CMHA guidance describes vacuum-based cleaning, including regenerative-air equipment, to remove sediment. After cleaning, restore the specified joint aggregate. Severe or localized failure may require further investigation or unit removal and reinstatement.
Who should receive the winter maintenance plan?
The owner or facility manager, snow-removal contractor and any party responsible for stormwater inspection should receive the project-specific plan before winter service begins.
Sources & Further Reading
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CMHA — Maintenance Guide for Permeable Interlocking Concrete Pavement
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CMHA — Effects of Deicing Chemicals on Interlocking Concrete Pavements
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CMHA — Construction of Permeable Interlocking Concrete Pavement
StoneWorks NY works through authorized dealers and trade partners serving Long Island, NYC and the greater Tri-State market. For a permeable-paver project, bring the application, project specification, quantities and schedule to your dealer so the relevant product information and current availability can be reviewed before procurement.