One of a critical component of roofing systems is Roof flashing. Is designed to prevent water penetration at areas where the roof intersects with walls, chimneys, vents, or other structures. ROOF FLASHING IN SINGAPORE : In Singapore, where heavy rainfall is common, proper roof flashing is essential to maintain the integrity of buildings and prevent water damage. There are several types of roof flashing commonly used in Singapore: Metal Flashing: Metal flashings, typically made of aluminum,