Roof Seam Damage: Fixing Failed Roof Seams
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Every Roof Seam is a Possible Weakness That Needs Attention
Most homes have asphalt shingle roofs with very few seams, but a growing number of metal roofs are starting to show up in Central Texas. There are also more homes with flat roofs, which have been common for commercial roof systems and industrial roofs for years.
If you have any type of metal roof or flat roof system something you have to watch out for is seam damage. The seams where metal panels or two pieces of material meet can be problematic. They are points that can become damaged or fail, quickly causing leaks and other issues with the roofing system. If you've got a metal roof or flat roof of any kind, there are certain things you need to know to avoid major seam damage.
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Why Roof Seams Fail
Metal roofing, modified bitumen and roofing materials with single ply thermoplastic membranes are among the systems that can experience roof seam failures if seals are weakened. When the seal is compromised the seam becomes a weak point, and unfortunately there are a lot of causes for this common problem.
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Improper Installation
Poor installation can be a problem for any type of roof on residential homes, commercial properties and industrial buildings. If your roofing system has seams each one is an opportunity for major issues when things aren't properly installed.
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Damaged or Missing Fasteners
If the fasteners that hold metal roofing in place are missing, corroded or damaged the panels won't be able to maintain the interlocking design and waterproof seal. This can be a real issue with standing seam roofs since the fasteners are concealed.
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Harsh Weather That Causes Damage
Hail damage and high winds can both cause seam damage. Hail that hits along the seams can cause damage that allows water to leak through. Strong winds can be even worse, especially if the roofing wasn't properly installed. Wind that catches under the seam can lift up the roofing material or metal panel and rip off a portion of the roof.
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Shrinkage and Expansion
Roof damage can occur in colder climates when the roofing materials contract, essentially shrinking. As the roofing materials contract the seam gaps will widen. If water gets in the seams and then freezes it can cause expansion that does just as much damage.
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General Wear and Tear
As any type of roofing system ages general wear and tear will happen. Over time the fasteners, adhesives, coatings and sealants break down and don't work as well to seal the seams. There can be premature wear and tear in areas with high heat, lots of UV exposure and/or lots of foot traffic.

Signs You Have a Problem With Your Roof Seams
So how do you know if the roof seams are damaged? There are three main signs that you have a roof seam problem.
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Leaks - Leaks are a clear sign there's something wrong with the roofing system, including problems with roof seams.
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Reduced Energy Efficiency - Have your utility bills gone up? If the seams aren't sealed up properly it will allow more hot and cold air from the outside to penetrate in and conditioned air to leak out.
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Visual Damage - Seeing damaged panels, metal panels that are raised up, gaps between the seams or roofing material that's curling up from the seams are all indicators that there's an issue that needs to be addressed.

Steps to Take If There's Seam Damage on Your Roof
If you spotted the seam damage signs above, it's time for roof restoration to prevent further damage from occurring. Roof seams that widen and split the coating or cause panels to be askew will allow water to get down to the underlayment, which leads to more damage that's more expensive to repair.
Here's the quickest way to get roof seam issues under control.
Call a Professional Roofer to Schedule a Roof Inspection
After doing an inspection of the entire roof, the roofer should be able to determine if the roof seams are failing or damaged, what is causing the issue and how to correct it. LOA offers free roof inspections, so determining the problem with a roofer like us won't cost a penny.
Call Your Insurance Company If There's Been Wind or Hail Damage
If the roof inspection revealed that wind or hail damage caused the seams to fail, then your insurance policy may cover the cost of the roof repairs or roof replacement if that's deemed necessary.
You'll need to file a claim and the insurance adjuster will want to see the roofer's inspection report. They may require additional information or another inspection, so it helps to work with a roofing company like LOA that is experienced in handling insurance claims and willing to talk to the insurance company for you.
Make the Roof Repairs
Regardless of who's paying, roof seam issues need to be repaired. If you want more assurance before making repairs, get another roofer to provide a second opinion.
Prevent Future Roof Seam Problems With Regular Maintenance
Regular inspections will help catch issues before they start causing bigger problems with the seams. An annual maintenance service visit from a professional roofer can be enough to keep seams properly sealed year round.
Austin homeowners and building owners can get reliable roof repairs, installations and maintenance from LOA. Give us a call to schedule an inspection and learn more about our roofing services!
