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What Causes a Roof To Sag? 

Roofs are one of the most important parts of a home. They keep out the elements and pests and provide a secure and safe haven as the seasons progress. Roofs also come in many different varieties. Whether a roof is straight, curved, or flat across, it can sag or experience other signs of wear and tear as the years progress. 

But what causes a roof to sag and is it fixable? Let Marietta's highly-rated roof repair experts explain more about roof sagging and what it means below.

What Is Roof Sag?

When roofs are originally installed, they are straight, strong, and ready to withstand the wind, rain, and other hazards. However, over time, they can start to droop or sag in different places. While minor drooping may not be an immediate cause for concern, this issue will get worse unless repairs happen quickly. 

If left completely unaddressed, serious leaking becomes a legitimate risk, and even a full roof collapse is possible. This can lead to a significant amount of time being displaced from the home, or the home can even become condemned if the structural supports suffer too much damage for a safe repair. 

Common Causes of a Sagging Roof

Just like any part of a home, roofs withstand a lot during the course of their lifetimes. Hail, rain, pesky squirrels, and general aging all impact a typical roof. Below are some of the most common reasons for a sagging roof. 

Improper Installation 

To start, having a roof improperly installed will most likely result in a shorter lifespan of the roofing structure. If improper installation of the roof joints and rafters happened when the home was built, the roof won't be able to support weight properly and will prematurely sag as a result. 

Water Damage

Properly designed roofs encourage rain to flow down the shingles and into a gutter system, but any sort of crack or hole in the shingle system leaves your roof vulnerable to serious water damage. If water gets up underneath shingles, it will lead to rot, which will compromise your roof structure and cause sagging. 

Age of the Roof 

Properly cared for roofs for will last for a few decades, but they are not indestructible. Depending on the shingle's composition, they can start to degrade and experience issues as they age. The older roof materials are, the more vulnerable they are to sagging. 

How To Check for Roof Sag

The good news is that most cases of a sagging roof are easily identifiable with the naked eye. Different types of roofs have differing lifespans, but they all usually show signs of deterioration in similar ways. These signs indicate a roof sagging problem that needs attention: 

  • Visible sagging, bowing, or dips in the roofline
  • Gutters that are pulling away or sagging away from the roof 
  • Damage to shingles or cracks in the roofline
  • Cracks and warping in the home's interior walls and ceiling
  • Water is pooling on the roof

If there is a discovery of any of these issues, calling a professional roofing company is vital. Over time, a sagging roof becomes more dangerous and the home may even become uninhabitable. 

Avoiding Roof Sag

Now that the question of, "What causes a roof to sag?" has an answer, let's talk about avoiding roof sag issues altogether. Having a sagging roof is never good, so avoiding one before it even begins is ideal. Prioritizing these tasks is essential for maintaining a structurally sound roof. 

Keep Gutters Clean

Routine gutter cleaning keeps them free of yard debris, which provides a clear path for rainwater to flow down and away from the roof. However, if leaves and other debris are clogging the system, that water will back up and pool on the shingles.

Over time, this pooling will lead to water damage, which compromises the roof structure. Regular gutter cleaning prevents this from occurring, and it is also a great way to address any structural issues with the gutters themselves. 

Prevent Roof Overloading 

Keeping debris off of the roof is also important. The design of roofs allow them to withstand a certain amount of external weight, but a buildup of debris over the course of a few years can lead to excess weight on the structural supports. 

In addition, any new installations like vents and fans should comply with the roof weight capacity as to not exceeed its limits. 

Prioritize Routine Inspections

Just like any other part of a home system, roofs need routine inspections to reveal and address minor issues. Enlisting the help of a professional roofing company ensures a quick fix for any structural problems before they get worse. They will check every part of the roof system for signs of wear and tear and offer maintenance tips to get the most out of the roof between inspections. 

Fixing a Sagging Roof 

Once a roof starts to sag, prompt action is the best way to prevent a full collapse. A licensed roofing company will inspect and evaluate the roof to determine if a repair is possible or if the entire roof needs a replacement. 

If a few repairs will do the trick, roof brackets, strapping, and cables help reinforce a sagging roof. Additional structural supports can also extend the lifespan of the roof. 

A full roof replacement happens when the roof is significantly damaged or poses a safety concern. While a replacement definitely requires more construction and time, doing so is essential to protecting the rest of the house from catastrophic damage. 

It is important to remember that attempting a DIY roof repair is dangerous. Improper practices and techniques can pose more safety risks than simply leaving the repairs to the professionals. 

Relying on Georgia Roof Advisors 

If you have noticed a problem with your roof and are wondering, "What causes a roof to sag?" the team at Georgia Roof Advisors has the answer. Contact them today for prompt service that you can trust and learn more about the different types of roof damage that require professional repairs. 

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