Waterproof Coating Solutions for Metal Roof
Metal roofing can provide a highly reliable and long-lasting solution, but leaks often occur due to compromised seams or loose fasteners caused by natural expansion and contraction. Corrosion and rust further weaken the roof over time. Without proper waterproofing, even the most resilient metal roofing materials can deteriorate prematurely, reducing their lifespan and performance.
Common Signs of Metal Roof Deterioration
Metal roofs are durable and long-lasting, but without proper waterproofing over time, these issues can compromise the roof itself and the structure beneath it, leading to costly repairs and a shortened lifespan.
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Leaks at seams or fasteners
Water penetrates small gaps between metal sheets or around screws and joints. -
Surface corrosion and rust
Moisture and environmental factors gradually eat away at the metal. -
Discolouration and peeling coatings
Protective layers fade or peel, leaving metal exposed to the elements. -
Structural damage
Water infiltration can weaken the roof framework and supporting building structures. -
Mould growth and staining
Persistent moisture encourages mould and unsightly water stains on ceilings or walls below.
Waterproofing Your Metal Roof Against Harsh Weather
Metal roofs are strong and long-lasting, but in Malaysia’s extreme climate plus metal naturally absorbs and transfers heat, a non-insulated metal roof can quickly turn your interior space hot and stuffy, forcing air-conditioning to work harder.
By applying ARCHTECH Waterproofing to prevents leaks and rust. At the same time, your roof gains a protective layer that reduces heat absorption, improves indoor comfort, and helps lower energy usage throughout the year.
Recommended for Metal Roof Leak Prevention
Metal roofs face challenges such as leaks at screw points, rusting sheets, deteriorated sealants, and weather expansion. Proper waterproofing protects your property from costly interior damage and ensures long-term durability. Our solutions serve both proactive planners and those facing immediate leakage issues.
Homeowners, Shops & Commercial Units
If your metal roof is severely aged or rusted, replacement is the most effective solution. ARCHTECH installs new metal roofing strengthened with a protective waterproofing layer that seals joints and penetrations, prevents future corrosion, and extends roof lifespan. Suitable for houses and shoplots, our systems deliver durable, weather-resistant protection against daily exposure and heavy rainfall.
Industrial & Large-Scale Metal Roof Structures
Industrial plants, warehouses, and facilities with large-span metal roofing require robust waterproofing to handle movement, vibration, and constant weather stress. ARCHTECH coating system is essential to prevent operational disruptions. We provides industrial-grade metal roof waterproofing designed to withstand harsh conditions, ensuring long-term protection and minimal maintenance.
How We Apply Waterproofing on Metal Roof
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Initial Site Assessment & Safety Protocols
Our specialists begin by inspecting the entire metal roof to identify areas of water ingress, corrosion, rust, and structural weaknesses. All work is conducted following strict safety protocols, ensuring minimal disruption to your property and occupants. -
Surface Cleaning & Preparation
The roof surface is thoroughly cleaned to remove dirt, rust, loose paint, and debris. Any oxidised or corroded areas are treated to restore a sound substrate, ensuring maximum adhesion and long-term performance of the waterproof coating. -
Rust Treatment & Minor Repairs
Corroded sections, leaks around fasteners, seams, and joints are repaired or reinforced. This may include applying rust converters, replacing damaged screws or flashing, and sealing minor gaps to prepare the roof for coating. -
Application of ARCHTECH Waterproof Coating
Specialised waterproof coatings are applied in multiple layers over the metal surface. Depending on the roof size and condition, completion is usually achievable within 1–2 days.
The solution leaves your area fully sealed and dry, providing lasting protection against leaks and daily moisture.
Long-Lasting Waterproofing for Your Metal Roof
Our metal roof waterproofing begins with a thorough inspection to identify all leak-prone areas, including panels, flashing, vents, and skylights. Using expert techniques tailored to the roof’s structure, we address leaks at the source and protect against rust and corrosion, ensuring it remains dry, secure, and reliable for years to come.
In-House Specialist Expertise
We rely on our own certified experts for precise diagnosis and uncompromising quality workmanship, ensuring permanent repairs.
Comprehensive Leak Resolution
We have complete solutions to solve all types of water leakage through your metal roof across industrial, commercial, and residential buildings.
Unmatched System Versatility
We specialise in clear coatings, liquid membranes, and metal roof systems, applying the right waterproofing solution for long-lasting roof protection.
Comprehensive 3-years Warranty for a Piece of Mind
Our long-term warranty covers all flat roof waterproofing work, giving you confidence in durability and reliability of ARCHTECH’s leak-proof solution.
Our Past Projects
ARCHTECH Waterproofing has been trusted across nation wide, from hospitality developments and government facilities to large-scale engineering works and premium residential properties. Our solutions are engineered for long-term performance, backed by technical expertise at every stage of the project.
Metal Roof Leaking? We’ve Got You Covered.
Tell us what you’re facing, whether it’s a leak, damp smell, mould stain or bubbling paint. You can also upload a photo for faster assessment. Our team will review your case and get back to you with a personalised solution and quotation.
Explore Our Comprehensive Range of Waterproofing Solutions for Other Areas
Discover how we protect every area of your property.