How to Replace the Bottom Seal on an Insulated Steel Garage Door

The elastic seal along the bottom of a steel garage door keeps water and trash from entering your garage. Over the long run this elastic gasket comes to be dry and fragile as its subjected to temperature updates and climate. A damaged garage door seal won’t hurt your door however its best to change this bottom seal when you perceive any decay. This do-it-yourself home repair is simpler provided that you raise the garage door to midsection level for less demanding access to the garage door seal.


  1. Raise the door to an agreeable stature to take your measurements, starting with the length of the garage door. Add 1-inch for every side to take into consideration adjustments. Measure the width of the bottom of the door and the width of the existing garage door gasket, if conceivable. Don’t remove the bottom seal until you have bought a replacement gasket.
  2. Remove the existing gasket (or section if replacement is indispensible) using the screwdriver to vacate any screws. Be mindful so as not to dent or damage the steel garage door. Some gasket replacement packs permit you to use the existing section while others require installation of a whole new section.
  3. Install the new gasket by sliding it into the existing section sleeve. The gasket might as well stretch out in the ballpark of 1-inch more extended than the door closes on every side. Append the gasket to the bottom of the garage door using screws. It’s best to use existing screw openings if conceivable to constrain damage to the insulation of the garage door.
  4. Trim any abundance length of the gasket with an utility cut or hand saw. Be mindful so as not to damage the surface of the door when trimming the overabundance gasket. Determine the gasket doesn’t hinder the raising and bringing down of the door.
  5. Test the new garage door gasket seal by bringing down the door and checking for a continuous seal along the bottom of the door.

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