External inspection requires the use of a ladder to enable the roofing contractor to access the outer part of your roof. Caution is a must to avoid damage to the roof and injury to the roofing contractor doing the inspection. Here are some of the things the expert inspects:
Pools of stagnant water on a roof increase the likelihood of damage. Trash, leaves, debris, and other objects thrown on the roof clog roof drains giving rise to water stagnation on the roof. The water makes the roofing materials deteriorate over time and hence reduces the lifespan of your roof. Regular inspection ensures that there’s proper drainage and water doesn’t get stuck anywhere in the roof.
The roofing contractor checks whether there is any vegetation on the roof. Wind and birds deposit seeds on your roof, which results in the growth of plants on it. Be sure to find vegetation on your roof if the gutters are clogged with leaves, paper, soil, seeds, etc. Another thing to check is tree branches extending to the roof. The branches scratch it when the wind blows and may cause damage when the wind gets stronger.
Loose or missing roof parts
As time progresses, the screws and nails that hold roofing materials firmly on the roof become loose and even come off. And so, strong winds may blow shingles, iron sheets, and other roofing materials off the roof. The roofing contractor takes note of the loose and missing parts for replacement during roof repair work.
Wearing and aging
Roofing materials wear out and age with time depending on the type of material. For instance, asphalt and wooden shingles have different aging rates. The wearing and aging causes openings in the roof. Even though some roofing materials are durable, there comes a time when they become weak and start to crack and break. Therefore, a roofing contractor inspects the materials to determine whether they are still strong or need replacement.