This article is brought to you by TLC Incorporated — Maryland’s trusted experts in yard drainage, hardscape protection, and homeowner education from Bob Carr.
Hi, I’m Bob Carr. If you’ve noticed new cracks in your driveway after a heavy storm — or watched existing ones get worse — you’re not just dealing with concrete. You’re dealing with water.
Driveway cracks aren’t just from age. They’re often from poor drainage.
Let me walk you through what causes it — and what you can do to stop it.
1. Why Driveways Crack After Rain
Heavy rain reveals weak spots in your property’s water management. If water runs toward, along, or under your driveway, you’ll see: – Expansion and contraction (freeze/thaw cycles) – Undermining of the base layer – Pooled water that weakens the slab – Pressure from waterlogged soil pushing against edges
Cracks form because concrete moves. And water is the number one trigger.
2. Signs It’s a Drainage Issue (Not Just Old Concrete)
- Cracks get wider or longer after big storms
- Water sits near or on the driveway after rain
- The edges of your driveway are sinking or washing out
- You see sediment trails or mulch migration nearby
- Driveway tilts slightly toward the home or yard
Bob’s Tip: Walk your driveway the day after a storm. The story is written in the water stains.
3. Where the Water Comes From
- Roof runoff hitting the driveway
- Downspouts too close to the concrete
- Neighboring slope draining onto your property
- Yard grades that push water toward hardscapes
- Lack of exit plan for surface water
4. What TLC Recommends
We’ve fixed hundreds of driveways — not with more concrete, but with smarter drainage.
Our fixes often include: – Burying or rerouting downspouts away from the slab – Installing channel drains across the driveway apron – Regrading soil or mulch that traps water – Adding swales or micro-drains nearby – Building a water exit plan (pop-up, dry well, daylight)
Real Fix: In Annapolis, we stopped a cracked driveway from worsening by rerouting two downspouts and cutting a subtle swale that moved water 30 feet from the slab. No more washouts. No new cracks.
5. When to Act
- If cracks are growing or multiplying
- If your driveway shifts or lifts in spots
- If water regularly pools near or under the slab
Fix the water, and the concrete lasts longer. Ignore it, and you’re replacing the whole driveway.
Final Thoughts From Bob
Don’t let cracks fool you — they’re just the symptom. The real cause is water going where it shouldn’t.
Let TLC trace the flow, find the pressure points, and protect your driveway for the next 10+ years.
📞 Call (410) 721-2342 or request your drainage evaluation at tlcincorporated.com