This is a non-destructive waterproofing treatment work. It is perform through the process of: 1. surface cleaning and preparation 2. primer coating 3. application of 2 layer of roof shield waterproofing chemical The thin but strong layer of waterproofing roof shield chemical coating process helps to seal the minor cracks, loopholes and gap at terrace floor area. It prevents water seepage through terrace floor by sealing all the micro level loopholes.