Replacing an entire roof is expensive, so many homeowners want to know what will make their roofs last the longest. Here are some ideas:
– Use long lasting materials. Every manufacturer has a warranty that will give you an idea of how long their materials will last. However, there are also materials that just naturally last longer than each other. For example, asphalt shingles won’t last nearly as long as metal roofing.
– Make sure you use a reputable roofer for installation. Roofers that have been around for many years are more likely to come back and fix their work if human error was involved, and are more likely to do it right the first time. You can’t be along for a long time in the Pacific Northwest roofing industry without getting the hang of doing a correct installation.
– Keep your roof clean and vented. Keeping your roof free of moss and debris can help keep it healthy. Additionally, making sure it has proper ventilation will help it’s life expectancy. 
– Keep your roof maintained. With the amount of urban rain forest we have here in Portland, it’s possible your roof may have a run in with a tree or large branch. Be sure to keep up the maintenance on it and get any damaged shingles or shakes replaced rapidly.
– Be sure any roof projections are installed properly. Whether you’re adding a skylight to flood your home with light over the winter months or getting a new chimney, be sure that all work done on your roof or cutting through your roof is done by a professional who can do the work properly. One of the easiest leak points on a roof is around projections.
You can make your roof last longer by doing some pretty basic, logical actions.