Exterior shutters are mounted on the outside of the wall. Some are a finished look beside the window and are not meant to cover the glass. Others are hardware and panels arranged so they can be closed across the opening. Looking closed-capable and being tested for wind-borne debris are different facts. This page is about the types. The storm page is about labels, codes, and what FEMA says happens when glass breaks.
Decorative and operable
A decorative exterior shutter is sized and placed to suggest a shutter, often as a pair fixed flat to the siding on either side of the window. If it does not hinge, slide, or roll over the glass, it cannot cover the opening when the weather changes. It can still be made of wood or of a manufactured board, and it still needs paint or another finish if the material weathers. It is not, by that fixed mounting, a storm shutter.
One of the Amazon listings in the side column says this in the product’s own words. The Pontiac Trail board-and-batten page states that those shutters are non-functional and decorative only. That is a listing fact about that product, not a verdict on every exterior shutter.
An operable shutter has a path onto the opening: side hinges, a top hinge, a track, or a housing it rolls from. Operable does not by itself mean impact-rated. FEMA’s 2005 shutter fact sheet, the sheet that names the common storm styles, says a shutter may look capable of withstanding windborne missiles, but unless it is tested, its missile resistance is unknown. The 2022 FEMA fact sheet on wall openings says to install only shutters that have a label showing they have been tested and are building-code compliant, and that storm shutters must be securely connected to the wall framing.
Styles FEMA names
FEMA 499 Technical Fact Sheet No. 26 (August 2005) says shutter styles include colonial, Bahama, roll-up, and accordion. An overview of the 2010 edition of the same guide, posted on FEMA.gov, still captions those four: colonial shutters, Bahama shutter, roll-up shutter, and accordion shutter. The fact sheet does not define each name in a sentence of body text, so this page does not invent hinge directions or slat angles for them. What the sheet does spell out is how the shutters are used day to day.
| Kind | What FEMA’s 2005 sheet says about use |
|---|---|
| Temporary plywood panels | Put up and taken down each time they are needed. They have to be anchored well enough not to blow off. They are difficult on upper levels. |
| Temporary manufactured panels | The sheet’s photo caption describes a metal panel set in a track mounted above and below the frame and held with wing nuts. Easier on lower levels. Still removed between storms, and still difficult upstairs. |
| Permanent, manual-closing | Left in place, ready to close. Closed by hand from the outside, so upper floors are hard to reach. |
| Permanent, motor-driven | Opened and closed from the inside. The sheet lists the disadvantage as expensive, without a dollar figure. This site does not add one. |
The same sheet notes that many coastal homes have large or unusually shaped windows, which need custom shutters, and that laminated impact-resistant glass is an alternative for those openings. “Custom” there means made for that odd opening, not a brand name, and not a claim that the stock-size vinyl pairs linked in the side column were built for one house.
What the panels attach to
Fact Sheet 26 tells installers to follow the manufacturer’s instructions, to attach shutters to structurally adequate framing members, and to avoid attaching them to the window frame or to the face of brick veneer. It also says to use hardware that is not prone to corrosion. Those points matter more on an exterior shutter than on an interior one, because the panel is in the weather and, in a storm, it is asked to pass load into the wall. A fastener in thin trim or in veneer that is not the structure can look installed and still be the weak point. The 2022 FEMA fact sheet makes the same structural point in fewer words: storm shutters must be securely connected to the wall framing.
Closing them is what FEMA calls an active mitigation measure. Someone has to do it before the storm, with enough time, and upper floors may need more than a person and a ladder. Motor-driven units reduce that outside work. They do not remove the need for the assembly to be the one that was tested and labeled.
Decorative shutters still need a real size
Even a non-operable pair is usually proportioned to the window it flanks: height close to the opening height, combined width close to the opening width, so each leaf looks as if it could cover half the glass. If the leaves are much shorter than the window, or much narrower than half the opening, they read as ornaments that do not belong to that window. That is a visual fit, not a storm rating. The side-column listings are sold in stated widths and heights, and several of them warn that the finished size can vary by a fraction of an inch. Those tolerances are copied in the column notes. They are not a measuring method for a custom interior shutter. That method is on the measuring page.
Fastening decorative panels tight to siding still has to hold them in wind so they do not become debris themselves. FEMA’s warning about wood panels that are not anchored well enough is written for storm panels, and the same physical idea applies to any board screwed to a wall in a high-wind place: if it lets go, it is no longer trim.
Not the whole hurricane story
Exterior shutters are one way to deal with openings. FEMA also discusses impact-resistant glazing, stronger window frames tied into wall framing, and garage doors rated for the wind pressure at the site. A house can have decorative shutters on the front and a different, labeled protection system on the openings that the code actually cares about. The storm page goes into the wind-borne debris region language FEMA quoted from the 2017 Florida Building Code, and into ASTM E1996’s scope, without turning those citations into a design.
Sources
- FEMA 499, Technical Fact Sheet No. 26, Shutter Alternatives (August 2005)
- FEMA, Overview of FEMA P-499, 2010 edition (style captions: colonial, Bahama, roll-up, accordion)
- FEMA P-2181, Fact Sheet 3.2, Wall Systems and Openings (March 2022)
- Amazon listing for the Pontiac Trail board-and-batten shutters — the “decorative only” sentence