Impact and Storm Windows in Tuscaloosa

They help against the common threat and cannot defeat the rare extreme one, and an honest answer says both. Impact windows are designed to resist flying debris and the pressure of severe thunderstorms and weaker tornadoes, which is what most Tuscaloosa homes actually face in a given year. No residential window survives a direct hit from a violent EF3-to-EF5 tornado like April 27, 2011, and for that level of threat the recognized life-safety answer is a rated storm shelter or safe room, not glass. What impact windows do well is keep ordinary storms from breaching the building envelope, which prevents the pressurization and interior damage that turns a bad storm into a destroyed roof.

Design Pressure, or DP, measures how much wind load a window can take before it fails structurally, expressed as pounds per square foot. A higher DP window resists being pushed in or pulled out by storm winds. Standard residential windows carry modest DP ratings that suit calm climates; storm-rated units carry higher numbers appropriate to a place that sees frequent severe-thunderstorm warnings. The rating appears in the product documentation, and matching it to your exposure, elevation, and local wind design is part of specifying the job correctly.

Sometimes, and it is worth asking your carrier directly rather than assuming. Some insurers offer premium credits for verified wind- or impact-rated openings, and Alabama has at times supported wind-resistance programs for exactly this reason. The credit varies by company and policy, and it depends on documented ratings, which is why keeping the product test data matters. Treat any insurance savings as a bonus on top of the storm protection, not as the reason to buy, since the numbers differ widely.

They solve the problem differently. Impact glass builds the protection into the replacement window itself, one unit, clean look, and it works automatically with no action from you when a storm comes. A separate exterior storm window is an added layer over an existing window, lower cost but a second frame to maintain and, on operable storms, something you have to close. For a whole-house replacement, integrated impact glass on the exposed elevations is usually the cleaner long-term answer; storm panels can make sense as a lower-cost measure on historic homes where the original windows are being kept.