Project Description 3 Layers System Metal Roof Waterproofing at Central Singapore Before After Project Details Project Location: Central Singapore. Building Type: Commercial Building What we did: 3 layers system for metal roof waterproofing and Torch-on membrane Get A Quote Today For any enquiries, do leave your contact details below and we will get back to you as soon as we can. Full Name * Email Address * Phone Number * Address * How can we help?