Roof replacement is typically one of the most expensive home repair projects. That is why you need to do everything possible to prevent anything that would necessitate roof repair or replacing the roof, such as a roof collapse. Below are some of the things that can lead to a roof collapse. Use the knowledge to protect your roof.
Each roof has a maximum weight it can bear. Beyond that limit, the materials can crack, bend, and give way, leading to a roof collapse. Letting snow accumulate on the roof is one of the easiest ways to overload the roof. Other things that can overload the roof include layering (installing a new roof without stripping off the first one), letting debris accumulate on the roof, and installing too many things on the roof.
Poor Design or Construction
Although not common, poor design and construction can also lead to roof collapse. Maybe the previous owner went for the cheapest materials on the market without considering their strength or quality. Or maybe the roofer cut some corners with the design and construction, and the result was a weaker roof than it should have been. In such cases, you are likely to find that the roof does not even meet the local building codes. Luckily, the risk of this being the case is low for roofs designed and constructed by professional roofers.
Even if your roof is impeccably designed and constructed, it might cave in if you don't maintain it properly. For example, letting roof leaks continue unabated can let water into the roof, which can lead to corrosion and rot, which can then lead to a roof collapse. Roofs rarely collapse out of the blue; it is the little issues such as neglected gutters, carelessly removed roof installations, and the blocked drainage systems that eventually lead to roof catastrophes.
Roofs, just like other parts of the house, age over time. Metal corrodes, wood rots, and asphalt deteriorates, among other factors of aging. A roof that has been in existence for decades is likely to be weak due to the accumulated effects of all these aging issues. Such a roof is more likely to cave than a newly installed roof.
Extreme accidents can lead to a roof collapse. For example, your roof might collapse if a nearby giant tree crashes on it. An extreme weather event, such as a tornado, or natural disasters, such as earthquakes, can also trigger a roof collapse.
If your roof does collapse, work with an established roofing company to execute the repairs at a reasonable cost. A good roofing company will advise you on the available options and complete the project in time so that you don't overspend on the project.