Things You'll Need
Liquid dish soap
The Wayne-Dalton garage door uses a seal that slides into two channels on a retainer at the bottom of the garage door. When you start having rain leak under your garage door, it is time to replace the seal. Replacement seals are available at garage door centers and home improvement centers. The seal is a flat piece of rubber that will fold in a U-shape along the width of the garage door.
Raise the garage door to the fully open position. This will give you access to the ends of the bottom section of the door.
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Insert a flat-head screwdriver into each channel on the bottom seal retainer where the seal connects. The seal has a groove that slides into the front and back channels. The channels are usually crimped by the installer to prevent the seal from working its way out of the channels. Twist the screwdriver to open the channel ends on both ends of the seal retainer.
Grasp one end of the seal with a pair of pliers and pull the seal out of the seal retainer. Inspect both channels on the seal retainer and straighten any bends that may obstruct sliding the new seal into place.
Lay the new seal flat on the garage floor with the rib side down. Place some liquid dish soap on a rag and rub the dish soap over the T-grooves on each side of the seal. The T-grooves are the part of the seal that slides into the channel.
Insert the T-grooves into one end of the seal retainer channels. Ask a friend to pull the seal down the length of the retainer as you guide the seal through the channels at the end. Crimp the ends of the channels on both sides with the pliers to lock the seal into position.