Waterproofing your deck during the rainy season Project Description An existing seminary along Epifanio Delos Santos Avenue has an approximately 800 sqm concrete roof deck that faces numerous problems such as concrete topping cracks, incorrect sloping, delaminated waterproofing membrane. The existing waterproofing membrane was an embedded-type (protected by a concrete topping) TPO membrane. Following appointment by the owners, the specialist waterproofing installer Zumicon Wa