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RD Coatings Elastometal Anticorrosion and Waterproofing Metal Roof Coating for repairing Metal Roof Buildings and Rusty Steel Structures. High performance exterior durable coating with 15 Year life expectancy in harsh C5-M coastal environments and C4 Industrial locations. No need for abrasive blast cleaning and no additional primers required. Easy to apply by Airless Spray or Roller. A High Performance Sustainable Metal Roof repair system with Dry Fall technology. Excellent adhesion and elasticity to allow expansion and contraction of metal panels.
It meets high environmental standards with low VOCs, no fire risks and low odour. EPD Verified. It can be applied in occupied buildings with the minimum disruption to business activities.
£72.95 £297.00Price range: £87.54£72.95 through £356.40£297.00 Inc. VATExc. VAT
High pressure water blasting is recommended to remove surface contaminants, loosely adhering paint and rust. Eco Powerclean is recommended for speed of cleaning. Allow to dry before applying two coats of Elastometal by Airless Spray. Allow 3 hours between coats. Application by roller may be used to reduce overspray, additional coats may be required to achieve the recommended dry film thickness. Read the technical datasheet for more detailed information.
The best system is usually one that combines corrosion protection, waterproofing, flexibility and strong adhesion in a single coating. For corrugated or profiled metal roofs, contractors often want a solution that can move with the roof, tolerate weather exposure and reduce the need for full replacement. A water-based elastomeric system like Elastometal is often preferred because it can provide a durable renovation solution while keeping disruption lower than more invasive methods.
Surface preparation is critical because even a high-performance coating will fail if applied over dirt, grease, loose rust or failing paint. The roof should be clean, dry and sound before any coating is applied. In practice, this usually means removing all loose material, treating corrosion, and degreasing the surface so the system can bond properly. High pressure water jetting is recommended with EcoPowerclean biodegradable detergent concentrate.
No, not always. Many roof renovation systems are designed to work without full abrasive blasting, which can save time and reduce site disruption. However, the roof still needs proper preparation, and heavily corroded or badly contaminated areas may need mechanical cleaning or local remedial work before coating. Elastometal is a primer finish which adheres to rusty steel without the need for abrasive blast cleaning.
Yes, the easier systems are typically single-component and can be applied by brush, roller or airless spray. That gives contractors flexibility depending on roof access, detailing and project size. Fast-drying products are often preferred because they reduce downtime and allow quicker recoating. Dry fall coatings like Elastometal enable quick and easy clean up of any overspray.
Metal roofs expand and contract as temperatures change, so the coating must be able to move with the substrate. A flexible coating helps reduce the risk of cracking, splitting or early failure at laps, fasteners and edges. This is especially important to avoid leaks on corrugated roof sheets, where movement and water run-off are constant.
Environmental exposure has a big impact on product selection. Roofs in coastal C5-M , industrial C4 or high-UV environments need coatings with strong resistance to corrosion, weathering and sunlight. If the building is occupied, low-odour and water-based products are often preferable because they reduce disruption and improve site safety. Roof Coatings like Elastometal are suitable for C5-M and C4 locations, they also have ultra low VOCs and have been EPD Verified.
Contractors should look for a system that forms a continuous membrane, not just a decorative finish. It should seal laps, fixings, edges and other vulnerable details while also resisting UV and movement. If there are active leak points, reinforcement at joints and penetrations is often important for long-term performance. Environmental compliance, ease of application and costs per square material are also critical. Elastometal meets the highest environmental standards, is quick drying and two coats can be applied fast by airless spray at a material cost of £9.50 sq metre.
Colour matters both aesthetically and practically. Contractors often need a finish that matches the existing building or corporate branding, while also providing a neat, professional appearance. A wide colour range is useful because it makes the system more acceptable for commercial and industrial clients and can help integrate repairs into the rest of the roof. Elastometal is available in an extensive range of RAL and NCS colours in a 15% satin finish.
Contractors usually want the same system to deliver waterproofing, corrosion protection, good adhesion, simple application and minimal downtime. They also need confidence that the product will cope with roof movement and weather exposure over 15 years. Colour range, site safety and the amount of preparation required are often the deciding factors. All these must be achieved at a material cost below £10 square metre.
A cost-effective system reduces labour, avoids unnecessary blast cleaning, dries quickly and extends the life of the roof enough to delay replacement. If it can be applied with standard tools and doesn’t require extensive disruption, that also improves value. The cheapest product is not always the best value if it fails early or needs more preparation and rework. Typical performance should be in excess of 15 years to achieve a good return on investment.
