EXAMINE THIS REPORT ON ROOF DRAIN

8. Proper air flow must also be taken into account when developing a concrete drain over a flat roof. Suitable airflow is critical to circumvent humidity buildup, which can lead to destruction and deterioration in the roof.หนาวแล้ว! กรมอุตุนิยมวิทยา ประกาศ ประเทศไทยเข