07/07/2026
Core drilling through 150mm of solid granite followed by two layers of 110mm concrete bricks—all to clear a path for a high-flow exhaust duct.
When you see a clean vent cover on the outside of a house, you rarely see the heavy engineering it took to get it there. Passing an exhaust duct through a combined 370mm of dense, mixed materials is no joke.
This single pe*******on took 2 full hours of intense drilling—making it the longest, toughest hole I have ever had to drill in my career!
Here is why a brutal pe*******on like this requires exact technique:
•Engineered Precision: Maintaining a perfect angle over a 370mm distance through mismatched layers prevents internal wall damage and ensures the pipe slides through straight.
•Controlled Power: Diamond core drilling keeps the structural integrity of the surrounding masonry completely intact, avoiding the vibration cracks that standard hammer drills cause.
Maximised Airflow: A perfectly smooth, snug pe*******on means the exhaust duct fits exactly as intended, reducing friction and maximizing your ventilation efficiency.
Premium building means having the specialised gear, patience, and expertise to handle tough structural pe*******ons without cutting corners.
Drop a comment below if you’ve ever had a core drill bit bite off more than it could chew! 👇
