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The life expectancy of most roofing materials is approximately 20 years. However, it might vary depending on how you care for your roof. Metal sheets are the most prone to damage caused by corrosion. Fortunately, cut edge corrosion treatment helps prolong their life span.
Corrosion is the process by which metals are attacked and destroyed by chemical reactions or other human influences. The corrosion rate is determined not only by the corrosive agent but also by factors such as temperature, humidity, and contact time.
Cut edge corrosion is associated with metal roofing. When metal roof manufacturers make roofing sheets, they coat them to prevent damage by various weather elements. However, roofers cut the sheets into sizes that fit the specific roofing designs during roof installation. The cut edges remain exposed to various weather elements because they are uncoated.
Over time, the roof's edges begin to rust, and the corrosion works its way up the rest of the sheet. If the cut edge is left untreated for a long time, it will damage the roof, forcing you to replace it sooner than anticipated.
When the cut edge corrosion is left untreated, the original protective layer continues to peel off. The peeling allows more water to penetrate the metal sheet, thus causing it to rust. If action is not taken as soon as possible, the rust will cause devastating damage to the extent that the roof begins leaking. Water fastens the corrosion process, so a coating should be applied to prevent water from penetrating the metal sheets.
Cut edge corrosion results in leaks and, eventually, roof replacement. The good news is that the problem is preventable through cut edge corrosion treatment. Treating the damaged ages or other parts of the sheet would stop the rusting process. The treatment would also extend the roof's lifespan to approximately 20 years and above. Roof replacement is costly; therefore, treating the cut edges would cut these costs.
It's advisable to carry out regular roof inspections to determine whether or not corrosion has occurred. The early detection of corrosion saves a lot of money. Sometimes, it's only detectable after it has caused major damage, so it's best to hire roofing experts for the necessary inspections.
PU liquid waterproofing is the ideal treatment option for cut edge corrosion. The liquid is applied to the sheets to form a seamless layer which prevents further corrosion. The treatment is easy to apply using a brush, making it ideal for large sheets.
The first step in cut edge corrosion treatment is surface preparation. The process involves pressurised cleaning of the roofing sheets to eliminate any debris and lose paint. If you’ve a metal gutter, it should also be prepared through a similar procedure.
Once the sheets have been cleaned, the next step is sealing the end joints using a PU-compatible sealant. A peel test determines whether these areas would or wouldn't need a primer. After the curing process, reinforce sheet laps and joints with a reinforcing g tape. During the process, ensure the tape fully bonds on the surface to create a weather sealant. The final process is coating the entire sheet with the PU liquid to prevent further corrosion.
The cut edge treatment process is highly cost-effective because it prolongs the roof's lifespan. Without the treatment process, the sheets would corrode and affect the entire roof. Eventually, the roof would leak and also appear unsightly from the outside. The only remedy at this point is roof replacement. It would cost you the initial cost you paid while installing the roofs.
Therefore, cut edge corrosion treatment plays an important role in hindering roof corrosion. It's more cost-effective when applied during the early months of roof installation. During this erosion, the roof would not have experienced a lot of damage, and therefore, it would require a little PU fluid. If you wait for years, the extent of the corrosion would be a lot, and the coating treatment would cost you more. Some people prefer to coat these sections immediately after the roof installation process.
The cost incurred in cut edge corrosion treatment depends on various factors. The main determinant is the extent of corrosion. If the sheets are highly corroded, you would require more coating products than when covering a small section. In most cases, contractors would charge you approximately £30 to £35 per linear metre.
Cut edge corrosion shortens a roof's lifespan and can require you to replace your roof sooner than planned. Therefore, it's important to utilize cut edge corrosion treatment immediately after roof installation. It would save you the cost of roof replacement. Call us today to get more information about the cut edge corrosion treatment process.