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The portion of PVC pipe embedded in the slab and serving as a flow may also crack due to thermal stresses Cheap Brayden Point Hat , settlement or expansion of the building. On the other hand, it is much more difficult to determine the cause of sagging rafters in the center of a ceiling. The leak can be located further, the water running in the structure of the slab. To establish the diagnosis, blow up a piece of dead plaster from the ceiling, so as to reveal the slab of the concrete floor, then dry the area with a heat gun. Run water directly into the exhaust outlet of the terrace with a garden hose with a tap at the end. In case of infiltration Cheap Ondrej Palat Hat , the part of the slab visible in the room will get wet, otherwise you have to look for the leak around the evacuation. Some aspects of the protective layer are also revealing. The crazing, or “mud-curling“, appears in the form of cracks, comparable to mud dried in the sun. 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