A bottom seal moves with the door; a threshold is attached at floor level. They address different parts of the opening and need to be considered with the door’s fit and the way water moves around the garage.
Locate the gap before selecting a product
Note whether daylight appears at the center, corners or along the whole bottom edge while the door is resting normally. Do not force the motor to press harder against the floor. Report the pattern and whether it changes after rain.
Consider both directions of water movement
If water collects inside the garage, discuss how it needs to leave as well as how it enters. A raised barrier can change that path. Slab shape, outside drainage and the door’s position should be understood before promising that one accessory will solve the problem.
Request a scope that names the cause
Ask whether the proposed work replaces worn flexible material, addresses a damaged retainer or requires a separate floor or drainage trade. A photograph can start the discussion, but an assessment is needed to confirm fit.
Frequently Asked Questions
Should I automatically install both products?
No. Select an approach after the gap and water pattern are understood.
Is adding a threshold the same as repairing the garage door?
No. It is a change at the floor. Mechanical or alignment faults in the door still require appropriate service.