There is a lot you shall gain when you pay attention to the maintenance of your roof. This is how you get it to serve you for longer. There shall come a time when a roof replacement will be necessary. Here are the things to look for, to help you know when the time has come.
When inspecting, you need to first take a general look at the roof. All you have to do is move back a bit and get a broader perspective of the house. You will thus see all sections that have sagged. You can easily detect that when you see parts of the roof that are not in line with the ideal planes and angles. There is a need for you to do something about it, no matter how minimal the sagging. It would indicate some damage, such as a weakened rafter, rotting, and foundational issues, to name a few.
You can also proceed to look for granules. These are small particles of the shingles. They happen to be on the roof, as well as the ground near the house. A lot of them are an indication of extensive damage to the roof.
You need to then further examine the shingles. You need to call in a roof inspector, who shall proceed to look at each shingle up there. You can count on them to look for all manner of curling, cracking, or missing sections. The professional, such as this roofing company, shall then tell you how long your shingles can hold up. You may need to replace only a few of them, or go for a complete replacement. They shall also assess for the presence of algae or moss. These normally indicate water collection that shall lead to more waterlogging. You need to make sure water does not collect on any sections of the roof. Leaks normally start that way.
You then need them to do an internal inspection. It is easier to see signs of roof damage from the interior. Any signs of leaks in there means the roof is in bad shape. You need the roof to remain watertight. You thus need for them to look at the interior and the attic as well. If you are experiencing water damage in there, you shall discover more useful advice on this site.
This therefore takes care of any roof inspection needs you may have. You can also take time to look at other areas of the house. You can, for instance, do a sprinkler system inspection, as well as a foundation inspection. You should only trust a licensed, experienced, and well trained inspector. You also have a right to a second opinion if the first one is not satisfactory.
You may then read more here about other critical areas of your house, and the issues you may face.