When planning a commercial paving project, most property owners think about materials, traffic flow, and striping — but drainage is one of the most important factors in determining how long your parking lot will last.
Without proper drainage, even the highest quality asphalt will eventually crack, sink, or erode. At J. Perry Paving, we integrate expert drainage design into every commercial job to protect your investment and keep your lot safe.
Why Drainage Matters in Asphalt Paving
Water is the #1 enemy of asphalt. When it pools or penetrates the surface:
- It softens and weakens the asphalt binder
- Freezing temperatures cause expansion and cracking
- Sub-base erosion leads to potholes and surface sinking
- Standing water poses slip and liability hazards
Without good drainage, even a brand-new lot can fail in just a few years.
Common Commercial Drainage Problems
- Ponding water in low spots after rain
- Edge erosion from runoff without curbing
- Clogged or missing catch basins
- Cracks and potholes from moisture infiltration
- Poor slope or grade, leading to slow drainage
→ See: How to Prevent Potholes in Commercial Parking Lots (Link to: How to Prevent Potholes in Commercial Parking Lots)
How We Design Drainage-First Paving Projects
At J. Perry Paving, we start every commercial project with a drainage plan — not just a paving plan.
Our drainage process includes:
- Site grading and slope evaluation
We ensure the lot slopes away from buildings and toward safe drainage areas (min. 1.5–2% pitch). - Sub-base design
We use gravel or crushed stone bases that allow water to move and drain away from the surface. - Curbing and berms
These control water flow, especially around landscaping or pedestrian areas. - Catch basins and trench drains
We install or integrate water management systems as needed, depending on property size and use.
Best Practices for Long-Term Drainage Success
- Inspect drains and grates twice a year
- Clear debris and leaves after heavy storms
- Avoid stacking snow on sloped areas or near lot edges
- Seal coat regularly to keep water out of hairline cracks
- Resurface or repave before drainage issues cause base damage
→ Learn about commercial maintenance plans to keep your lot in shape (Link to: Commercial Asphalt Maintenance Tips for Rhode Island Businesses)
Local Relevance: Why It’s Crucial in Rhode Island
Rhode Island gets an average of 40+ inches of rain per year, plus snow and ice that melt rapidly in spring. That’s a lot of moisture — and a big threat to poorly drained lots.
A flat surface isn’t enough. You need smart grading, real drainage design, and regular upkeep.
Why Businesses Choose J. Perry Paving
We don’t just pave. We engineer your lot to last for decades — starting with what’s underneath and how water moves across the surface.
- 20+ years of local experience
- Full drainage planning and site grading
- ADA-compliant lot design
- Durable, properly compacted base materials
- Free evaluations and honest recommendations
→ Learn more about our approach
Final Thoughts
Ignoring drainage during a paving project is a costly mistake. It leads to early repairs, safety hazards, and a shorter lifespan for your lot. When you work with experienced pros who plan for water from the start, your investment goes a lot further.
Need a drainage assessment for your commercial lot?
Contact J. Perry Paving and schedule a free consultation today.