And there are no properties in the drainage from the roof has continued as expected in the long term. Over time, thus causing ceiling collapsed until a gap does not protect against water.
And without the ability to drain water from the roof has continued as it should be, in the long run. Over time, resulting in the ceiling broke down until a gap is not waterproof anymore.
And no property in drainage from the roof continuously as it should be in the long run Over time, thus caused the ceiling collapsed and the gap could prevent the water getting on