We have specially made t bottom weather seals that will close medium size to large gaps between your floor and door bottom.
Garage door bottom seal track sizes.
54 x 1 3 4 flat pvc retainers.
We used the six inch to make up about a 2 inch gap tapered to zero over a ten foot distance but i am fairly sure the same gasket will work in your case.
Other bottom seals are a little more intricate like the twin contact bottom seal.
Additionally we have this in kit.
Bottom seal retainers on a garage door serve the same purpose.
The seal fits snuggly around the door on both sides.
Like the top and side retainers the bottom retainers come in various shapes and dimensions.
I just replaced the vinyl seal on my garage door for the exact same reason.
Aluminum retainer and epdm rubber seal for 2 car garage 2 model a13xt 18 a.
Garage door weather seal overview.
Shop our commercial door weather strips.
Depending on the shape of the slots in the bottom retainers.
Our garage door threshold kits include your choice of 10 feet or 18 feet of threshold plus two tubes of threshold adhesive to secure it in place.
It is essentially a u with the garage door fitting inside.
Accepts wide t style weather seal.
We have many types of weather seal that will work with this retainer.
Going with the 4 or 6 inch gasket does not change the width at the bottom of the door only the depth or the gasket.
This type of garage door seal is usually used for heavy steel doors that screws cannot penetrate.