Wooden shutters are the best for inclement weather; they are stronger and easier to maintain than vinyl, or fiberglass.
Shutters that are brown in color and are able to withstand severe weather.
An all weather shutter type would be the best for protection against rain and mold.
The best shutters for blocking out heat are block out roller shutters.
A soft spounge and cloth is an excellent tool for cleaning shutters.
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There are blackout shutters that are available that block out a majority of the light.
Thermal effiecient shutters are really good for keeping in warmth.
Durashutters are a great type of shutter that will keep your home looking great. These also keep the elements out of the house when it's really bad weather.
Board and batten shutters will work best on Mediterranean, Country French, and Santa Fe style homes.
You have to keep in mind that shutters aren't going to protect your home from hurricanes. They may protect your windows but if there is flooding, shutters aren't going to help. It's best to make sure that your home foundation is built up if flooding is likely. Make sure you go with a builder that is familiar with building in your region. Shutters would be the best to get.
Here is a great link that tells you all about the best shutters to get: http://www.sun-sentinel.com/news/broward/sfl-hc-shutterguide,0,4823608.htmlstory
steel or aluminum The best option for shutters is traditionally wood. This is affordable and will resist the elements. It also is an attractive option.