Manufacturers generally design dry verge components to perform for several decades, and in practice a correctly fitted system will comfortably outlast a traditional mortar verge many times over. Exactly how long yours lasts depends on the quality of the components used and how well the initial installation was carried out.
What affects the lifespan
UV exposure, temperature swings and general weathering do eventually take a toll on the plastic or GRP material, but good-quality units are formulated to resist this for a very long time, often outlasting the tiles they're fitted to. Poor installation is a far more common cause of early failure than the material itself, such as units not properly clipped or screwed down, which can let wind get underneath and work them loose over time.
Roofs in more exposed positions, such as those on a hill or facing Bristol's prevailing south-westerly winds, will naturally see more wear than a sheltered roof in a built-up terrace, though a properly fitted system should still hold up well in either case.
Why installation quality matters more than the material
Even the best dry verge units on the market will underperform if they're fitted incorrectly, which is why it's worth choosing a roofer who fits them regularly rather than as an occasional job. Screws that aren't driven into solid timber, or clips that aren't fully engaged, can let a section work loose years before the material itself would ever have failed on its own.
Brunel Roofing Bristol backs its dry verge installations, along with all its other roofing work, with a 15-year guarantee, giving you real peace of mind that the job has been done properly and will be put right if anything does go wrong.
Keeping an eye on things over the years
Even a long-lasting system benefits from an occasional glance, particularly after a severe storm, just to check nothing has been knocked loose or dislodged by debris. Catching a small issue early, such as a single displaced unit, is far simpler and cheaper than dealing with the knock-on effects if it's left unnoticed for years.
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