Case Study: How a “Cheap” Concrete Driveway Became a Costly Repair

Concrete work often looks fine on the day it’s poured.

Problems usually show up months later — cracking, sinking, ponding water, and edges breaking away.

This case study shows exactly what can go wrong when shortcuts are taken, and how CWG NSW delivered a long-term fix.

The Project

Location: Mascot, Sydney (residential property)

Scope: Existing concrete driveway replacement

Issue: Severe cracking, water pooling, and uneven levels less than 2 years after installation

The homeowner originally chose a low-priced quote to save money. Unfortunately, the result was a driveway that failed far earlier than expected.

What Went Wrong

After inspecting the driveway, several issues were immediately identified:

❌ Poor Base Preparation

• Inadequate excavation depth

• No proper compaction

• Soft ground left beneath the slab

  
  

This caused the concrete to settle unevenly over time.

❌ Insufficient Reinforcement

• Lightweight mesh placed directly on the ground

• No bar chairs or supports

• Mesh ended up at the bottom of the slab

  
  

Without reinforcement in the correct position, the concrete had very little resistance to cracking.

❌ Incorrect Thickness & Falls

• Slab thickness varied significantly

• Poor falls caused water to pool near the garage

  
  

Water ponding accelerates deterioration and creates slip hazards.

❌ No Curing

• Concrete left to dry naturally

• No curing compound or protection

  
  

This reduced the final strength of the slab and increased shrinkage cracking.

The CWG NSW Solution

CWG NSW was engaged to remove and rebuild the driveway properly.

✔ Step 1: Full Demolition & Assessment

• Existing slab removed

• Subgrade inspected and reworked

• Unsuitable material removed

  
  

✔ Step 2: Correct Base Preparation

• Proper excavation depth achieved

• Compacted road base installed in layers

• Levels and drainage re-established

  
  

✔ Step 3: Proper Reinforcement

• Correctly specified mesh installed

• Reinforcement supported on bar chairs

• Adequate concrete cover achieved

  
  

✔ Step 4: Controlled Concrete Pour

• Correct slab thickness maintained

• Falls set away from the garage

• Professional finishing to suit driveway use

  
  

✔ Step 5: Proper Curing

• Concrete cured to achieve design strength

• Surface protected during early strength gain

  
  

The Result

✔ Crack-free driveway

✔ Correct drainage — no ponding water

✔ Strong, durable slab

✔ Clean, professional finish

✔ Long-term performance

What Homeowners Can Learn from This Case

✔ Cheap quotes often mean shortcuts

✔ What’s under the concrete matters most

✔ Reinforcement must be positioned correctly

✔ Curing is not optional

✔ Repairs usually cost more than doing it right once

Why CWG NSW Is Different

Most concreting problems don’t come from bad concrete — they come from poor workmanship and rushed processes.

CWG NSW focuses on:

• Doing the groundwork properly

• Explaining the process clearly to clients

• Building concrete that lasts decades, not years

  
  

We don’t aim to be the cheapest — we aim to be the last concreter you need to call.

Thinking About Concrete Works?

If you’re planning a driveway, slab, or concrete upgrade, learn from this case study and choose a contractor who prioritises quality, preparation, and durability.

📞 Contact CWG NSW

📍 Sydney & NSW

📧 Trusted residential & commercial concreting