Commercial Metal Roof Replacement

Why Does a Metal Roof Deteriorate?

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You can have major problems with a new metal roof if mistakes are made in in its design as well as its installation. The selection of the system is not an area where such problems will typically occur. A major part of the problems that lead to leaking in metal roofs, have to do with the details used for finishing the roof system. When a roof is first installed, these mistakes may not be immediately evident, as they can take some time to develop.

Ann assessment of a metal roof will bring up the most common five problems that are encountered.

Horizontal Seams Openings

You will rarely get metals roofs that in length span the full length of the rafters. Some project designers limit the length of the roof panels to take in both expansion and contraction.

This restriction of the panel length then makes it necessary to have horizontal seams in the roof system. These seams run horizontally, and are perpendicular to the other standing seams in a metal roof.

These horizontal seams do tend to separate over time. Where the metal roofs are hydrostatic, this results in openings being created, that allow water falling on the roof to enter the building that it covers.

Penetration Flashing Openings

Commercial Metal Roof Replacement ContractorsAll metal roofs will expand and contract with the temperatures they are exposed to. This causes movement of the roof panels. This in turn leads to the attachment points and the penetrations getting stressed. This stress causes the flashing at the points of penetration to breakdown and then cause the roof to leak.

The construction of a metal roof system involves the attachment of individual panels by bringing them together at the seams. Once this assembly is completed it is not easy to disassemble these panels or remove them.

In an asphalt shingle system you can disassemble the shingles to allow for any repair to penetration flashing. You cannot do this with metal roofs, which makes any repairs to flashing, difficult, and even more so, if this penetration installation work is carried out after the roof is installed.

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Metal Roof Oxidation

A variety of materials are used for manufacturing of metal roofs. These are aluminum, steel, copper, tin, and zinc. Some of these materials can combine with the oxygen in the air and cause oxidation. The sheet metal of most metal roofs are given a protective layer. This layer can wear away after some time and this will leave the metal exposed to oxygen and that can cause oxidation.

When metal roofs suffer surface oxidation, it can lead to several problems. If the roof system is structural, there can be structural failure. Oxidation can also lead to difficulties in repair. If this oxidation occurs at the places where fastener heads are exposed it then becomes difficult to apply any sealants.

Fasteners Backing Out

A typical metal roof system will involve both concealed and exposed fasteners. You can use either screws or nails for this fastening. Most fasteners that are exposed will have washers made of neoprene that allow the sealing of fastener heads to the roof.

After some time, these fasteners do tend to back out from the position they are seated in. One reason why this happens is wind uplift, which causes the metal panels to vibrate and thus dislodge the washers from their seat. The neoprene washers can also dry out and allow water to enter. Come winter, this water can freeze and this expansion can lead to a further backing out of the fastener.

Open Ridge/Headwall Flashing

Roof systems do need to end and come into contact with other building surfaces. Roof systems can end into a rising wall, like where it ends into any rising wall in a shopping center below a sign band.

This is a point where the roof system can be weak. This is often a result of poor detail in the original installation design. It is necessary to have closure strips to see that water does not blow back into the detail. Many installers or contractors do not install these closure strips. The underlay acts initially to waterproof the roof system, but as it ages, it can lead to moisture penetrating the roof.

There are other reasons why a metal roof system may leak, but those given above are most common and must receive any initial check. Your battle against leaks is already half won, when you know where to look.

Armadillo Roofing & Exteriors, 512-333-7663, provides commercial metal roof replacement and commercial metal roofing services to Austin, Texas and the surrounding Austin area communities.

Metal Roofing Maintenance

The Best Ways to Maintain Metal Roofing in 2021

Ultimately, many business owners choose to install metal roofing because it requires no care, has a lifespan of 50 years or more. It can be designed to adhere to the high-performance standards established by the industry.

However, maintaining a metal roof in good condition is usually low, mainly if the top was built correctly. While this is the case, conducting regular maintenance on your metal roof should not be ignored. It may make or break a system, particularly in the event of a significant issue developing.

Roofs made of metal have a distinctive appearance and are long-lasting, which may improve the appearance of your exterior. It is nevertheless susceptible to wear and tear from severe weather conditions and poor maintenance, even though it is more robust than other roofing materials. Keep your metal roofing in excellent condition all year long with the assistance of this comprehensive guide.

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Beware of debris.
To not collect certain kinds of debris, such as branches or leaves, is advised on all types of roofs. Still, for many reasons, this is an essential practice for metal roofing owners. Because the surface is sleeker than wood or other materials, debris is typically blown off metal roofs when windy or raining outside. However, this often implies that dirt or other environmental elements may fall out of the top and into your drainage system. Once this occurs, water may become blocked, which could damage the roof. A simple method to prevent waste from becoming a metal roof issue is to ensure that any adjacent tree branches do not droop over the surface.

Make sure there are no holes or gaps.
It is always better to be safe than sorry since delaying comprehensive inspections for an extended period may result in unexpected problems when it comes to roof care. While metal is known for its durability, keeping an eye out for any cracks or gaps in the roof will guarantee that you do not have to deal with a leak later on down the road. If you notice any loose joints on your metal roof, it is not difficult to repair them. Although filling these gaps with sealant is generally sufficient, you should also consider thoroughly coating the metal roof with a watertight coating. It may do wonders for preserving the surface from possible rust or corrosion accumulation. However, suppose the holes are large enough that water is seeping into your home. In that case, you must call a professional inspector to fix the issue.

Make sure that the screws are snug and solid.
Check the tightness and security of all of the screws throughout the roof’s length. Fluid will accumulate around the exhaust stacks due to loosened screws, resulting in corrosion or rust. Screws may become tight after years of exposure to all types of weather, which is why it is essential to spend some time each year checking that everything is secure. Ensure that the screws you choose are suitable with your particular kind of metal roofing and that they adhere to the manufacturer’s guidelines if your roof needs replacement screws.

Preparation and painting should be done correctly.
Before painting your metal roof, if you find it needs a touch-up, take some time to clean the whole surface thoroughly. It will make sure that no kinds of debris are trapped under the coating before you begin. As a general rule, make sure the paint you’re using is intended for metal surfaces in particular.  Painting over rusty areas is always a good idea at the moment to keeping rust from building up on your metal roof.

Should check corrosion
In the course of your roof inspection, a roofing expert will check the sections of your roof that are close to your HVAC system and ventilation systems. According to the Roofing Contractors Association of America, ventilated appliances emit chemicals, steam, and heat, which may damage the paint on your metal roof and ultimately corrode its panels. It aids in the prevention of corrosion by preventing various metals from coming into contact with one another.

Cleansing Stubborn Stains
If you have persistent stains, you may need a mild cleaning solution to get them out of your roof. According to the recommendations, a detergent, such as car washing soap or mild dish soap, should be mixed with water. Apply the solution to your metal roof with a sponge, microfiber cloth, or soft-bristle brush. Let it rest on the surface for 5-10 minutes before rinsing off the excess solution. Finish by rinsing well with plain water to remove any remaining solution. It is one of the least intrusive and most straightforward methods for cleaning a metal roof!

Ensure no other metals or materials are in connection with the roof.
Although it may seem improbable that metal or other items might wind up on your metal roof, it is a potential source of worry. When different materials come into touch with a metal roof, they may interact, resulting in early deterioration, discoloration, and the eventual collapse of the system as a consequence.

Commercial Metal Roof Repair CompaniesThe roofing of Galvalume, for example, is best done without contact with copper, bricks, treated wood, iron, and concrete. If Galvalume is in touch with one of these products and then an electrolyte like water is added, galvanic corrosion of the anode may result. The same applies to different roofing systems. Confirm that producers of alternative roofing materials, such as wooden shingles or rubber/cement roofing systems, are not negatively affected by metal roofing.

Keep a close eye on any other professions that may be operating on or near your roofs, such as electricians, electrical experts, or solar apnel installers, if they suggest creating any penetrations in the surface of your roof. A licensed and insured roofing expert should do any penetrations installed on a metal roof. These penetrations also requires greater attention during regular maintenance procedures.

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Tips to Clean a Metal Roof
Pick a day that is dry and cloudy – Do not clean your roof on hot and bright days since the metal panels are pretty hot, and you may harm yourself. Metal panels can reflect the sun on sunny days and may create a light that may affect your eyesight. It will wet once you start washing the metal roof, but do not clean the top on a wet, rainy day, to reduce the risks of slipping and falling.

Only clean the areas where you can get to them. Before you start transporting tools and other cleaning materials, you need to know how far your roof can reach regions requiring deeper cleaning. Sleeves will increase your reach, but if there are too many places beyond your reach and pose a risk, it is better not to attempt it and hire a professional.

Do not use harmful items- When cleaning a metal roof, avoid using products that include wool or sandpaper. Avoid paint thinners, high-pressure washers, and wire brushes. Also avoid paint thinners, high-pressure washers, and wire brushes. When you use items like that, you will create scratches and other damage to your panels.

Hire an expert if in doubt. If you are uncomfortable or you don’t know how to do this. Contact a professional roof cleaning or repair service. You’re going to get the job done and spare the stress. It will cost more to hire a professional service. Still, it will save you time and help you maintain your roof in the most satisfactory condition.

Maintenance done on your metal roof regularly is critical to maintaining and safeguarding your investment. You will save time and money by having your roof carried periodically. You will also avoid spending money on expensive repairs in the future since maintaining your roof will keep your roof regularly.

Take a look at the following points to bear in mind:

  • It is always advisable to hire a competent contractor or metal roof repair service to guarantee that maintenance is done correctly and safely.
  • If you are uncomfortable with the prospect of climbing onto your roof, don’t do it.
  • If you decide to conduct maintenance on your own, ensure that a second person remains on the ground while working to guarantee your safety and security.
  • Structures in harsh weather climes need a tighter maintenance plan for metal roofing.
  • Metal roof care is relatively low compared to other roofing materials.
  • Check out your roof at least twice a year.
  • If you detect a possible problem or area of concern, notify the contractor or manufacturer before it becomes a significant problem.

Armadillo Roofing & Exteriors, (512) 333-7663, provides commercial metal roof coating, commercial metal roof restoration, commercial metal roof repair and commercial metal roof installation services to Austin, Texas and the surrounding Austin area communities. When you need help with your commercial metal roof give us a call or contact us here on our site. Or, if you prfer, you could contact us through our sister site at

Beth WilliamsWe want to recognize and thank Beth Williams for writing and contributing this week’s blog post.


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“Thanks for taking care of us in a professional manner. It was a pleasure to deal with someone who actually did what he said he would do. Look forward to seeing you soon. Thanks again.”

Mike McCoy – Mission Mortgage

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Mike Wilson – Central Texas Development Assessments, Inc.,

“Thank you again for your hard work. You did an amazing job on our building’s roof system and I would certainly recommend Armadillo to anyone needing your services.”

A.W. Armstrong – Kestrel Management Services, LLC

“Armadillo Roofing replaced our old roof with a beautiful new one. David managed the entire process to the detail. He was there during the work and walked the roof with me after it was finished. Quality, friendly and trustworthy best describes our experience with Mark and David at Armadillo.”

Lisa Y. – Austin

“We had an amazing experience with Armadillo Roofing and can’t say enough positive things about them. They replaced our entire roof in time to put our house on the market.”

Court C. – Cedar Park

“A hail storm left us with roof damage. Armadillo was referred to us and we couldn’t be happier. David was onsite at the start and finish of each phase to ensure everything was done properly. Mark is engaged and responsive anytime we had questions. They do great work! I would recommend Armadillo to anyone.”

Danny W. – Austin