Cut-Edge Corrosion
Exposed sheet edges and overlaps can corrode as protective finishes deteriorate, allowing rust to spread beneath adjacent coatings.
Commercial & Industrial Roofing
Metal Roof Repair & Refurbishment
Specialist commercial metal roof repairs, cut-edge corrosion treatment and liquid-applied waterproofing solutions for warehouses, factories and industrial buildings throughout the UK.
Refurbish Rather Than Replace
Extending the Life of Metal Roofing
Commercial metal roofs are durable, but over time protective finishes, roof sheet edges, fixings and weatherproofing details can deteriorate and allow water ingress.
Elite Waterproofing provides targeted metal roof repair and refurbishment services, addressing the defects responsible for leaks and progressive roof deterioration.
Using suitable surface preparation, corrosion treatment and liquid-applied waterproofing systems, we can refurbish appropriate existing roof coverings without necessarily replacing the entire roof.
Our approach considers the complete roofing system, including sheet laps, cut edges, fasteners, flashings, rooflights, penetrations and gutters.
Common Metal Roofing Problems
Where Do Metal Roofs Fail?
Metal roofs can develop leaks at several different locations, often long before the entire covering reaches the end of its useful life.
Corroded Fixings
Deteriorated washers, fasteners and bolt heads can allow water to enter around fixing positions.
Failed Roof Sheet Laps
Ageing seals, sheet movement and corrosion can compromise the weatherproofing of overlapping metal panels.
Rooflight Junctions
Failed seals and connections around rooflights may allow rainwater to enter even when the adjoining sheets remain sound.
Flashings & Penetrations
Vents, ducting, plant installations and abutments introduce additional details requiring suitable weatherproofing.
Gutters & Condensation
Drainage defects can cause water ingress, while condensation from inadequate thermal control may be mistaken for roof leaks.
Specialist Corrosion Treatment
What Is Cut-Edge Corrosion?
Cut-edge corrosion is a common problem affecting coated metal roof sheets, particularly around sheet overlaps, eaves and exposed edges.
Where the protective coating is damaged or insufficient at the edge of a sheet, moisture can initiate corrosion. This may progress beneath the surrounding coating, causing blistering, peeling, staining and eventual perforation.
Early treatment can help protect suitable roof sheets before deterioration becomes too extensive for refurbishment.
Warning Signs
- Rust streaks on roofs, walls and gutters
- Flaking or blistering protective coating
- Corrosion at roof sheet overlaps
- Pitting or holes near exposed edges
- Water ingress during rainfall
Our Approach
How We Repair Corroded Metal Roofs
Effective treatment requires more than covering visible rust. Surface condition, preparation and system compatibility are important to the finished waterproofing treatment.
Inspection
Identify corrosion, failed joints, leaks and other defects requiring repair.
Surface Preparation
Remove loose contamination and prepare affected areas in accordance with the selected treatment specification.
Priming & Detailing
Apply compatible primers where specified and treat vulnerable sheet edges, laps and fixings.
Waterproofing
Apply the selected liquid-applied system to create a protective barrier over treated areas.
Severely corroded or perforated sheets
may require localised replacement
rather than coating alone.
The suitability of any refurbishment
system must be assessed for
the existing roof.
Original Project Photography
Metal Roof Corrosion & Waterproofing Details
Examples of metal roof sheet edges and overlaps from Elite Waterproofing's existing cut-edge corrosion service.
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Comprehensive Roof Repairs
Liquid-Applied Metal Roof Refurbishment
In addition to localised corrosion treatment, suitable metal roofing systems may benefit from more comprehensive waterproofing refurbishment.
Roof Sheet Lap Sealing
Treatment of leaking sheet overlaps and vulnerable joints using compatible sealants, reinforcement and liquid waterproofing materials.
Fixings & Fasteners
Assessment and treatment of deteriorated fastener locations, with replacement of unsuitable components where required.
Rooflight & Flashing Details
Remedial waterproofing around rooflight junctions, penetrations, abutments and other complex interfaces.
Protective Roof Coatings
Broader protective coating systems may be appropriate where the roof substrate remains suitable and the system is correctly specified.
Advantages of Refurbishment
Why Refurbish Your Existing Metal Roof?
Potential Cost Savings
Repairing suitable existing coverings may cost less than extensive roof replacement. Savings depend on roof condition and specification.
Reduced Disruption
Targeted repair works can sometimes be organised around ongoing business activity, subject to access and safety arrangements.
Corrosion Protection
Appropriate preparation and compatible protective treatments can help limit further deterioration of treated areas.
Detailed Waterproofing
Liquid-applied systems can accommodate complicated roofing details where conventional sheet materials may be difficult to apply.
Service Life Extension
Suitable repairs can extend the serviceable life of existing roofing, depending on roof condition and ongoing maintenance.
Project-Specific Systems
Products and application methods can be selected according to substrate condition and the approved specification.
Choosing the Correct Solution
Repair, Refurbish or Replace?
Not every corroded metal roof needs replacement. Equally, some roofs are too deteriorated for coating to be an appropriate long-term solution.
Repair & Refurbishment
Suitable for roofs where the underlying sheets remain serviceable and problems can be addressed through corrosion treatment, detailed repairs or compatible coatings.
A roof assessment helps determine the appropriate treatment areas and required preparation.
Discuss RefurbishmentMetal Roof Replacement
Replacement may be more appropriate where corrosion has caused extensive damage, sheets have lost serviceability or the building requires a new roofing specification.
This may involve individual roof sections or a more extensive roof replacement programme.
Explore Replacement
Commercial & Industrial Buildings
Roofing Work Around Your Business
Metal roof refurbishment can involve occupied factories, warehouses, retail premises and other operational buildings.
Access equipment, material movement, roof-level work, weather conditions and activities below must all be considered during planning.
The preferred repair method will depend on the nature of the defects, the building, the location of work and any restrictions affecting normal business operations.
Where possible, works can be sequenced to reduce disruption, while prioritising appropriate safety controls and installation requirements.
Frequently Asked Questions
Metal Roof Repair FAQs
What causes cut-edge corrosion?
Corrosion can begin where the protective finish of a metal roof sheet is damaged, thin or absent, particularly at exposed edges. Moisture can then penetrate beneath adjacent coatings and cause further deterioration.
Can cut-edge corrosion be repaired?
Yes, where the remaining metal is in suitable condition. Repair commonly involves appropriate surface preparation, compatible primers and protective treatment. Severely damaged sheets may need replacement.
Can a metal roof be waterproofed without replacing it?
In many cases, suitable existing metal roofs can be refurbished using detailed sealing and compatible liquid-applied waterproofing systems. An assessment is needed before specifying treatment.
How do I know whether my roof needs repairing?
Warning signs include rust staining, coating delamination, repeated leaks, damaged fixings, perforated areas and deterioration around roof sheet overlaps.
Can condensation be mistaken for a roof leak?
Yes. Condensation can occur when warm, moist internal air contacts colder roof surfaces. Identifying whether moisture comes from condensation or external rainfall is important before repairs.
How long will a metal roof refurbishment last?
This depends on the existing substrate, preparation, system specification, exposure conditions and maintenance. Any product or workmanship guarantee should be confirmed in writing.
More Roofing Solutions
Related Services
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Is Your Commercial Metal Roof Leaking?
Whether you're dealing with cut-edge corrosion, leaking roof sheet laps, deteriorated fixings or wider metal roof refurbishment requirements, contact Elite Waterproofing to discuss your building.
Call 01509 414300