Damp proofing is like putting on a raincoat to protect you from getting wet. In a house or building, it's important to have materials and techniques that prevent water from getting inside and causing damage.
When it rains, water can seep through the walls, floors, and roof. This can create dampness, mold, and rot. To prevent this, builders use a special kind of paint or coating that repels water.
They might also use materials that don't absorb water, like concrete or brick. And, they might put in a layer of plastic sheeting or felt paper between the walls and the outside world.
All of these methods work together to keep the inside of your house dry and strong!