A sagging roof is arguably the most common problem of your roofing system. Ensure that you repair your roof as soon as you notice it looks curved and drooping. Otherwise, you will have to replace the entire roof, which can be costly.

Unfortunately, understanding what causes your roof to sag and knowing if your roof is sagging can be challenging. Even though a little sag doesn’t depict the imminent danger of collapsing, it is a sign that you need to take the necessary precautions.

Causes of Sagging

To know if your roof is sagging, you first need to understand what causes your roof to sag. Several factors may cause sagging. They include:


One of your roof functions is to prevent elements such as water from destroying the property inside your home. However, if you notice that the gutter system or shingle is damaged, the chances are that rainwater or snow will accumulate on your roof.

After some time and because of poor ventilation, the trapped moisture will create a conducive environment for mildew and mold to grow. As a result, your roof will start to deteriorate and sag. The first step is to repair the gutter system or shingles to avoid further damage to your roof.

Too Much Weight

Your roof can only handle a specific amount of weight. Anything more can lead to sagging. Snow, ice, and solar panels are some of the things that add too much weight to your roof. Therefore if you notice frost on your roof, make an effort of clearing it before the damage becomes severe.

Additionally, design issues such as undersized rafters, insufficient sheaths, and the type of material used can cause your roof to sag.


The average life span of a roof should be between 15 to 30 years. However, it will depend on how you maintain your roof and factors such as climate, geographical location, type of roof, etc. When your roof ages, the chances of it starting to sag are very high.

Poor Quality Roofing Materials

Faulty installation and low-quality roofing materials can cause your roof to sag after a specific period. It is because low-quality materials are easily damaged by water.

How to Know If Your Roof Is Sagging

There isn’t a specific way to know if your roof is sagging. All you can do is inspect it regularly. Ensure that you check the roof from the outside and inside the house.

Under normal circumstances, you should notice a triangle shape where the beam and rafters combine with the roof. If the shape is uneven, then your roof is sagging.

Repairing a sagging roof earlier prevents severe damage and possible injuries. You can contact a roofing professional to help you assess the damage, identify the cause of sagging, and recommend repair options.

Visit our homepage at https://compassroofingsystems.com/


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