There are many kinds of shingles available, including proper asphalt, aluminum, copper, tin, concrete and plastic. Their installation procedure will differ at the different stages; therefore this guide will be asphalt shingle installation specific, as this is the most common roofing choice in the United States. Be sure to obtain any required permits before working on your roof.
In order to preserve shingles and prevent leaks, do not commence shingle installation during extremely cold/hot weather. Before beginning shingle installation, make sure all underlayment and roof edging is in order, as this will be your main source of waterproofing. If you need to also apply new underlayment, No. 15 or 30 asphalt-saturated felt underlayment is required.
How to replace a roof is a two step process that will strongly depend upon the kind of roof you own. There are many kinds of damage that can occur, including holes, leaks, rust, decomposition, discoloring, tearing, and more.