In my experience with home renovations, defect checking is often overlooked but plays a crucial role in delivering a flawless final result. When working on walls, hollow spots and uneven plaster can cause serious issues down the road, including cracks, peeling paint, or even structural weaknesses. I personally use a simple yet effective method: tapping tiles and plaster surfaces lightly to listen for hollow sounds. This tactile check can quickly indicate if there are voids behind the surface. For more precision, a telescopic tool helps detect internal hollowness without destructive testing. It’s important to conduct these inspections before applying any finishes. Once paint or wallpaper goes up, hidden defects become harder to fix and more costly to address. I recommend performing multiple checks throughout the renovation journey, especially after any major structural work. Another tip is to combine these hands-on techniques with visual inspections under good lighting conditions to spot uneven plaster or surface irregularities early. Consistent quality control throughout the renovation can minimize surprises and ensure the space looks exactly as designed. For tile installations, a knock test to check for hollow tiles is indispensable. Tiles without proper adhesion can crack or detach, leading to repairs soon after completion. From my experience, investing time in thorough defect checks saves money, time, and frustration by avoiding rework and preserving the integrity of your renovation.