The first thing you must understand is that a roofing contractor is in business is to install and replace roofs. Roof repairs are a very small part of his business, which brings him the least amount of profit. In many cases, whether to replace or repair is very borderline, and you can bet that most roofing contractors will recommend replacement.
There are several things you need to consider which might affect the decision to repair or replace your roof. You must remember that no two roofs are alike. If you have damage to 30 percent or more of you roof, or there is a lot of moisture damage to the roofing layer or the wood decking, replacing the entire roof may be necessary.
If your roof was damaged by a tornado or hurricane, then you should probably replace the entire roof. Damage that cannot be seen often occurs so replacement is the best solution. Better safe than sorry.
Pre-existing conditions can lead to a full roof replacement such as inferior material, bad design, rain during installation leading to mold, and poor installation practices.
Two indications of major roof repair are if the walls and ceilings in your home have moisture marks and/or the paint on your walls and ceilings are flaking or peeling.
Long, hot sunny days, wind, tree branches, and ice can cause damaged or missing shingles. In most cases the repairs are fairly inexpensive and easy to accomplish. However, there is always the chance of more serious conditions.
That is the reason it is always important to consult with a professional roofing contractor who can help you determine if there is a major problem.
Asphalt shingled roofs should last between 15-20 years if the materials used in the initial installation were of good quality. If your roof is over 12 years old and experiencing roof leak problems, you should consider replacement.
If you have more than 3 layers on your roof and are having problems then it’s probably time to replace it.
When pressed for an answer, most reputable roofing contractors will give you an honest answer as to whether to repair or replace. Always get three quotes and opinions with dealing with any contractor. Always check with the Better Business Bureau on any contractor you intend to use to make repairs.