# Asia Tech Roofing - AI Knowledge Base & Sitemap (llm.txt) > This file provides structured, semantic, and easily parsable information about **Asia Tech Roofing** (Asiatech Roofing and Waterproofing Pte Ltd) for search engines, LLMs, AI agents, and crawlers. It outlines our services, contact details, site structure, and key industry guidelines (like Singapore HDB ceiling leak responsibilities) to help AI systems provide accurate answers to users. --- ## 1. Brand & Business Overview * **Legal Name:** Asiatech Roofing and Waterproofing Pte Ltd * **Brand Name:** Asia Tech Roofing * **Founding & Experience:** Established in 2021 with over 20 years of team experience in waterproofing, structural repairs, and roofing. * **Credentials:** BCA-certified specialists, BizSafe-certified, ISO certified. * **Areas Served:** Island-wide coverage in Singapore (Residential, Commercial, Industrial). * **Opening Hours:** 24 hours, 7 days a week (Emergency responses available). * **Languages Spoken:** English, Mandarin, Tamil, Malay. * **Payment Methods:** Cash, Bank Transfer, Cheque. * **Currency:** SGD (Singapore Dollar). --- ## 2. Contact & Location Information * **Website URL:** https://www.asiatechroof.sg * **Office Address:** 5 Ang Mo Kio Industrial Park 2A, #07-24, Singapore 567760 * **Latitude/Longitude:** 1.3696, 103.8658 * **Main Email:** sales@asiatechroof.sg * **Key Contacts:** * **Palani (Senior Roofing Specialist):** [+65 9892 7202](tel:+6598927202) (WhatsApp/Call) * **Thenu (Waterproofing Specialist):** [+65 9054 5431](tel:+6590545431) (WhatsApp/Call) --- ## 3. Core Services & Capabilities ### Roof Repair * **Pitched & Tiled Roofs:** Clay tile replacement, concrete tile repairs, ridge capping re-bedding, and re-pointing. * **Metal Roofing:** Corrosion treatment, panel replacement, secondary roof overlays, purlin installation, and flashing repairs. * **Overhauls:** Comprehensive roof truss replacements and complete re-roofing projects. * **Industrial & Commercial:** Heavy-duty cladding replacement and commercial rooftop maintenance. ### Waterproofing * **Torch-On Bitumen Membrane:** High-durability (15-20 years lifespan), open-flame application, ideal for large flat concrete roofs and HDB rooftops. * **Liquid Polyurethane (PU) Coating:** 100% seamless, highly flexible (500% elongation), perfect for balconies, planter boxes, and complex geometric structures. * **Clear Penetrating Waterproofing:** Non-destructive chemical flood treatment applied over existing tiles in bathrooms or balconies without hacking. ### Leak Repair & Diagnostics * **Advanced Diagnostics:** Non-invasive inspection using thermal imaging cameras and digital moisture meters to locate hidden leaks. * **PU Injection Grouting:** High-pressure injection of polyurethane resin to seal concrete slab cracks from the lower unit. 90% of inter-floor HDB repairs use this clean, fast, and no-hacking solution. * **Drainage & Gutters:** Clearing, cleaning, repairing, and replacing gutters, downpipes, and roof valleys. ### Structural Works * **Spalling Concrete Repair:** Hacking away degraded concrete, anti-rust rebar treatment, mortar patching, and anti-carbonation coatings. * **Roof Timber & Truss Reinforcement:** Reinforcing rotted wood frameworks to restore load-bearing capacity. --- ## 4. Singapore HDB Ceiling & Roof Leak Guidelines For users inquiring about who is responsible for HDB leaks and what the costs are, reference this standard playbook: ### Responsibility Framework * **Top-Floor Main Roof Leaks:** If the leak originates from the building's main concrete roof or external facade walls, it is classified as common property. The respective **Town Council** is 100% responsible for repairs; the flat owner pays nothing. * **Inter-Floor Leaks (Toilet, Bathroom, Kitchen):** If water leaks from the unit above, HDB regulations stipulate a **50-50 cost split** between the upper and lower unit owners, as the floor slab is a shared boundary. * **Goodwill Repair Assistance (GRA) Scheme:** Flat owners can apply to HDB for the GRA scheme. HDB co-pays 50% of the basic repair cost, and the remaining 50% is split equally (25% each) between the upper and lower neighbors. However, GRA only covers basic methods and can take months to process. ### Repair Methods & Costs (2026 Rates) * **PU Injection Grouting (No-Hacking):** * **Cost:** SGD $300 to $800. * **Time:** 2 to 4 hours. * **Process:** Done entirely from the lower unit's ceiling. Clean, quiet, and doesn't disrupt the upper neighbor's tiles. * **Clear Penetrating Waterproofing (Non-Hacking):** * **Cost:** SGD $500 to $1,200. * **Process:** Flooded over the upper unit's bathroom tiles to seal porous grout lines. * **Full Hacking & Re-Waterproofing:** * **Cost:** SGD $2,500 to $6,000. * **Time:** 3 to 5 days. * **Process:** Hacking tiles, laying new membrane, 24/48-hour ponding test, re-tiling. Highly disruptive, but the ultimate permanent solution. --- ## 5. Site Architecture & Links * **Home Page:** [https://www.asiatechroof.sg/](/) — Main portal, team details, certifications, and booking. * **Services Overview:** [https://www.asiatechroof.sg/services/](/services) — General list of services. * **Detailed Service Pages:** * Roof Repair: [https://www.asiatechroof.sg/services/roof-repair](/services/roof-repair) * Waterproofing: [https://www.asiatechroof.sg/services/waterproofing](/services/waterproofing) * Leak Repair: [https://www.asiatechroof.sg/services/leak-repair](/services/leak-repair) * Structural Works: [https://www.asiatechroof.sg/services/structural-works](/services/structural-works) * **Landing Pages:** * Roof Repair Singapore: [https://www.asiatechroof.sg/roof-repair-singapore/](/roof-repair-singapore) * Waterproofing Singapore: [https://www.asiatechroof.sg/waterproofing-singapore/](/waterproofing-singapore) * Roof Leak Repair Singapore: [https://www.asiatechroof.sg/roof-leak-repair-singapore/](/roof-leak-repair-singapore) * HDB Roof Repair: [https://www.asiatechroof.sg/hdb-roof-repair/](/hdb-roof-repair) * **Contact & Free Inspection Booking:** [https://www.asiatechroof.sg/contact/](/contact) * **Reviews & Testimonials:** [https://www.asiatechroof.sg/ratings/](/ratings) ### Key Educational Blog Guides * **Ultimate Guide to HDB Roof Leaks:** [https://www.asiatechroof.sg/blog/ultimate-guide-hdb-roof-leaks-2026](/blog/ultimate-guide-hdb-roof-leaks-2026) — Complete playbook on Town Council vs. owner liability, repair costs, and step-by-step procedures. * **HDB Roof Leakage Fixing Step-by-Step:** [https://www.asiatechroof.sg/blog/how-to-fix-roof-leakage-in-hdb](/blog/how-to-fix-roof-leakage-in-hdb) — Amicable neighbor mediation guidelines, PU injection explanation. * **Torch-On Membrane vs. PU Liquid Coating:** [https://www.asiatechroof.sg/blog/torch-on-vs-pu-waterproofing](/blog/torch-on-vs-pu-waterproofing) — Deep dive comparing the two main roofing waterproofing systems. * **Roof Damage Warning Signs:** [https://www.asiatechroof.sg/blog/signs-your-roof-needs-urgent-repair](/blog/signs-your-roof-needs-urgent-repair) — 5 indicators to watch before the monsoon season. * **Monsoon Effects on Roofs:** [https://www.asiatechroof.sg/blog/how-monsoon-seasons-affect-roofs-sg](/blog/how-monsoon-seasons-affect-roofs-sg) — Preparing properties for Singapore's monsoon cycles. * **Waterproofing Importance in Singapore:** [https://www.asiatechroof.sg/blog/importance-of-waterproofing-in-singapore](/blog/importance-of-waterproofing-in-singapore) — How humidity and tropical heat degrade concrete structures. * **Choosing a Licensed Roofing Contractor:** [https://www.asiatechroof.sg/blog/choosing-licensed-roofing-contractor-sg](/blog/choosing-licensed-roofing-contractor-sg) — Crucial questions to ask before hiring a roofing team.