If you will be replacing more than one door seal replace the bottom one first.
Replace seal bottom of shower door.
The seal should be tight and take some effort to get seated correctly.
Remove the old sweep or seal clean the glass edge of the door use a glass safe scraper to remove any dirt or residue and clean with your favorite glass cleaner and a soft cloth.
Replacing shower door bottom seal is very easy.
Seals typically slide into a channel at the bottom of the door or they are placed between the base of the door.
Carefully remove the old seal from the door by sliding the seal downward.
Inspect the bottom of the shower door to determine the plastic seal attachment method.
Next cut a length of seal strip slightly longer than the section you are replacing.
Install the seal onto the door by pressing one end of the seal onto the corner or end of the door and then pushing the seal into place from this end working your way to the opposite end.