Garage Door Seals

How To Replace Bottom Garage Door Seals

Garage door seals are also known as weatherstripping and astragal. Seals are found around all four edges of the garage door. The purpose of a weather seal is to keep insects and critters out of the garage while also keeping moisture and cold air from seeping through the cracks around the garage door. By weatherproofing your garage door, you can save on your energy bill and stay warmer through the winter.

On the sides and top of the garage door, PVC Stop Molding is installed to the wood trim. When the garage door is closed, the sections of the door are intended to be flush against the frame of the garage. This is not, however, usually the case. When you install PVC Stop Molding, the flap of this type of seal will press against the outside of the garage door, closing the gap between the door and the garage frame. Another type of seal is a Reverse Angle Jamb Seal. The clip portion of this seal attaches to a piece of angle iron. Then, the flap, like the PVC Stop Molding, closes the gap between the garage door and the garage frame. There are also some types of seals for the top of the garage door that install to the top of the top section. When the garage door closes, the Flap Top Seal closes against the garage frame.

There are also various Garage Door Seal Retainers that you can install around the sides and top of your garage door. You can then slide Vinyl Seal, Rubber Seal, or Brush Seal into the garage door seal retainers. The advantage of using the retainer and the inserts rather than the one-piece weather seals is that changing your seal insert is a lot easier than changing the entire seal.

The bottom of the garage door also has multiple types of seals. Bottom Astragal is nailed into the bottom of the garage door to make a tight fit with the garage floor. Other bottom seals are a little more intricate like the Twin Contact Bottom Seal.

Bottom Seal Retainers on a garage door serve the same purpose. Like the top and side retainers, the bottom retainers come in various shapes and dimensions. Depending on the shape of the slots in the bottom retainers, you can slide inserts (vinyl or rubber) with T-Shaped or Bead-Shaped ends onto the retainer. There is also the Bubble Seal that slides into the retainers.

Dock Leveler Seals are used on loading docks to seal the gap between the platform and the sides of the dock.

Back to top
Prices Subject to Change

Since 1997 the Gold Standard for Online Garage Door Parts


Huge inventory of torsion springs for same or next day shipping! Here you will find all you need in the most common sizes of 1 3/4," 2," 2 1/4," and 2 5/8" inside diameter springs. Larger 3 3/4" and 6" inside diameter commercial and industrial springs may require a day or two to ship. You'll also find TorqueMaster Springs, Extension Springs, Self-Storage door springs, steel rolling door springs and springs for one piece single panel doors.

Shelves packed with every part you need to fix your doors.

Please note. Shipping times and costs have changed. Normal transit times are currently not guaranteed, even on next day and second day shipments. Shipping prices on items over eight feet have more than tripled.