How Often Does a Metal Roof Need to be Replaced?
Metal roofs have a longer lifespan than several other types of roofing systems.
Metal roofs have a longer lifespan than several other types of roofing systems. Metal roofs are highly durable, reliable, and resilient, making them highly popular among residential and commercial property owners. An average metal roof will last 50 years or more when maintained correctly.
However, metal roofs are not indestructible and will wear out eventually. In most scenarios, a metal roof will not experience severe issues until later in its lifespan. However, there can be circumstances where it can suffer damage sooner than expected.
Types of metal roof systems
There are two metal roof systems: screw-down panels and standing seam. For screw-down panels, the roofers use screws and washers to screw down the panels while the fastener stays exposed, restricting the metal from expanding or contracting. The standing seam metal roof is where the metal panels are locked together at the seams, facilitating panel expansion and contraction.
Replacement schedule for a metal roof
How often a metal roof requires replacement depends on several factors, including local climate, quality and type of material, installation quality, and maintenance. A metal roof in areas experiencing excessive rain, heavy snowfall, and frequent storms will require replacement more often than in dry climates. Properly installed and well-maintained metal roofs enjoy a longer lifespan and stay in optimal condition for longer. Whereas improperly installed and incorrectly maintained roofs will require replacement sooner.
Signs a metal roof needs replacement
A metal roof constantly withstands elements. It is best to regularly inspect the roofing system to ensure minor issues get detected and fixed on time before they escalate into major problems. However, there are times when a metal roof is beyond repair, and replacement is the only solution. Every metal roof will demand replacement eventually. Here are a few warning signs indicating it is time for metal roof replacement:
Damaged or worn-out paint finish
The painted finish on the metal roof protects it from elements and discoloration. If the paint warranty expires or a hail storm and failing debris cause damages, dents, or scratches painted finish, the standing seam metal roof will require replacement sooner than expected. Incorrectly applied or damaged paint coating can result in rust, corrosion, holes, cracks, and water damage.
Extensive storm damage
Severe storms are detrimental to any roofing system. Hail, tree limbs, or heavy debris falling or hitting the metal roof can cause holes, dents, punctures, and structural damage. It is best to inspect a roof after a strong storm; if the metal roof has experienced extensive damage, replacement is advisable.
The fasteners are giving out
The exposed fasteners of the screw-down metal roof can widen over time and become too large for the screws due to a lack of contraction and expansion, failing to keep the panels in place. While installing larger screws is a viable option to extend roof life, not doing it on time can result in leaks and lifting panels, eventually resulting in panel replacement.
Sagging
A sagging metal roof indicates a big issue. It can happen due to incorrect installation or problems with the roof’s support structure, like rot, broken support, or corrosion. A sagging roof poses a severe threat and demands professional inspection as soon as possible.
If you suspect issues with your metal roof, call a local roofing contractor for an inspection to recommend repair or replacement.
Patterson Construction Company installs and repairs residential roofs of all kinds, skylights, roof ventilation, fascia, and underlayment on Phoenix-area homes. Call 602-825-3638 for a free quote today!
