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Certain hardwoods that are currently used for exterior shutters, specifically Spanish Cedar, Honduran Mahogany and Teak, have grain that actually breathes out moisture making them resistant to rot and decay, and far more durable than a softer wood like pine. Because of the tannin in these woods they are also not prone to problems from insects. Non-functional exterior shutters can be constructed from vinyl, wood, or other synthetic materials. Non-functional shutters simply screw or bolt directly to the building. A recent material to be used for the making of composite functional shutters is fiberglass because it is not prone to rotting or twisting, and because it is dimensionally stable and has low expansion and contraction. Fiberglass is a reinforced plastic unlike vinyl or PVC shutters so it does not warp or sag much like its unreinforced counterparts. Its strength is comparable to aluminum however it does not suffer from corrosion and electrolysis.
An exterior hurricane shutter or storm shutter is used to protect windows and doors in a building against the effects of high winds, rain, and flying objects during a hurricane, or as security gates over the opening. They can be made of a variety of materials such as fiberglass, aluminium, iron, or wood and can be installed in tracks to be quickly opened and closed with motorized controls. There are also high impact resistant plastics that can be applied to new or existing wood shutters that provide hurricane protection. Florida has recently modified its requirements for hurricane shutters, so before purchasing any hurricane shutter you must check your local building codes to see what is required and/or acceptable.
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