Direct answer
Replacing flexible material only addresses one possible source of a gap. The lower edge of the door, its seal, the stationary floor and any separate floor threshold must meet along the full width. Where they don't, a new flexible strip may still leave a gap. Clopay distinguishes door-mounted bottom profiles from floor-mounted thresholds and frame-mounted perimeter weatherstripping, so these are not interchangeable fixes. [S03] A visible gap is a useful observation; it does not prove that the floor is uneven, that the door is out of level, or that the opener should be adjusted.
Map the gap before ordering anything else
With the door fully stationary and without operating it to conduct a test, photograph the inside lower contact line from a safe standing position. Mark where you see light, air ingress, debris or moisture, and the conditions in which the symptom appeared. Never crawl beneath a door or place hands into the closing path.
| Distribution observed | What to record for a technician | What you should not infer |
|---|---|---|
| Gap predominantly near center | Straight-on photo of lower section and floor at center and both ends; note whether central floor looks lower | The slab is bowed or the new seal must be thicker |
| Gaps mainly at both corners | Exterior grade/drain direction, end-contact observations, nearby perimeter-jamb interface | The floor is the sole cause or corner pads may be added universally |
| Gap grows steadily left-to-right | Full-width contact photo and doorway drainage/slope context | Door needs lifting or spring/track adjustment |
| Gaps newly appear after replacement | Before/after photos if available; receipt/product profile and any removed piece (already detached only) | The purchased part is wrong without receiver/door evidence |
| Gap only when wind-driven water enters | Track where water enters, slope/threshold/perimeter photos | Weatherstrip alone is a waterproofing guarantee |
A floor-fixed threshold is categorically different from a bottom insert that travels with the garage door. [S03, S11] It may be worth discussing with a professional after the source of the gap and drainage path is understood. The existence of threshold products does not demonstrate that one is safe or suitable for this door. Any optional threshold adhesive information belongs to the separate 69-draft owner NW0276, not this page.
Separate profile fit from building geometry
Give the dealer two evidence sets instead of blending them. Seal set: product label/part source, attachment profile and receiver count, installed-or-loose sample condition, observed compression/contact along width. Opening set: stationary floor/door photos with a level or straightedge shown only if one can be used safely from an unobstructed location, drainage direction and any known previous changes to the floor. Label which values are measured and which are visual estimates.
Clopay's maintenance page treats drafts and visible wear as bottom-seal inspection triggers and points owners to an authorized parts source. [S01] That does not state that all post-replacement air leakage is due to seal wear. Confirming the correct material, door variant and retainer is a separate task from investigating floor-level or bottom-panel differences.
Six questions that turn a vague gap into a repair decision
- Is the current seal model/attachment confirmed for this installed receiver, or merely similar to the removed one?
- Does the gap follow a floor low spot, vary along the door bottom, or coincide with a corner where the bottom/perimeter components meet?
- Are the new and old relaxed cross-sections actually comparable, measured away from permanently flattened or torn zones?
- Is water entering under the door or running around a jamb? Is the driveway pitch relevant?
- Does the original door maker approve any threshold or auxiliary seal for this specific door and safety setup?
- Does a professional need to check door geometry, bottom-panel condition, operator safety/reversal or balance before another component is installed?
Clear stop line
Do not attempt to solve floor gaps by changing limit or force settings, pushing the door down harder, shifting tracks, shimming the bottom section, loosening bottom brackets or adjusting springs/cables. A too-thick seal or added floor threshold can affect closing behavior; this draft provides no approval or instructions for modifying that interaction. If contact is irregular, a door technician should determine what is mechanical versus seal-related. Clopay recommends professionals for track and operator repairs. [S01, S09]
Reader outcome
You should be able to say where the gap is, whether the seal attachment itself is confirmed, whether the floor condition appears related, and what an installer must check. “No confirmed fix from photos” is a valid result. This is deliberately different from a generic threshold product profile or the separate pending adhesive-prep guide.