Start with the opening and the floor
With the door closed, look along the bottom edge from inside the garage. Daylight can reveal a damaged seal, an uneven floor, or a door that is not sitting correctly. A new seal may help when the existing rubber is cracked, but it will not correct every gap. The shape of the opening and the condition of the door both matter.
Clear leaves and loose debris from the driveway near the threshold. Notice whether rainwater collects against the door. Weather stripping is not a substitute for fixing a drainage problem; if water repeatedly enters, identify where it comes from before choosing a repair.
Look at the side and top weather seals
Check for brittle material, tears, and sections pulling away from the frame. Perimeter seals should meet the door without being so tight that they interfere with movement. Photograph any gaps so you can explain their location when arranging service.
For an attached garage, it is also useful to inspect the condition of the doorway between the garage and the house. Improving garage door sealing may reduce drafts, but the comfort of nearby rooms depends on the whole building envelope.
Observe a normal opening and closing cycle
If the door has no visible damage or signs of instability, watch one normal cycle from a safe location outside its path. Note new scraping, shaking, hesitation, or uneven movement. A recording of the sound can help a technician understand an intermittent complaint.
Stop using the system if you see a hanging cable, a damaged spring, a roller outside its track, or a door moving crookedly. Repeatedly pressing the remote can make a mechanical problem worse. Do not pull the emergency release on an open or visibly unstable door; a door that has lost its counterbalance can fall.
Keep the sensor area clear
Remove stored items and yard debris from the area around the opener's photo-eye sensors. Gently clean dusty sensor lenses according to the opener manual. A blocked beam can interfere with closing, but unexplained reversal can also have other causes.
Consult the instructions for your exact opener before testing its safety features. Do not bypass a sensor, raise it to avoid an obstruction, or increase force settings to push the door through resistance. If a safety test fails, stop automatic operation and arrange an inspection.
Plan maintenance around the actual door
Find the door and opener model numbers and keep their manuals available. Lubrication points and suitable products differ between systems. Applying lubricant everywhere, especially onto tracks or components that do not call for it, is not a useful maintenance plan.
Keep spring tension adjustments, cable work, and bottom-bracket repairs for a trained technician. A maintenance visit can also address the cause of noise and wear rather than treating the sound alone. For Wellesley homeowners, fall is a practical time to discuss seals and operating concerns before winter weather makes garage access more inconvenient.
Frequently asked questions
Will new weather stripping fix water entering my garage?
Not always. A damaged seal may contribute, but floor shape, driveway slope, and drainage can also direct water into the opening. Identify the source before selecting a repair.
Can I keep using a door that has started moving crookedly?
Stop operation and arrange an inspection. Uneven movement can involve cables, tracks, rollers, or the counterbalance system and should not be forced.
What should I tell the technician before a maintenance visit?
Describe when the problem happens, any recent change in sound or movement, and the location of visible damage. Model numbers and safely taken photos can help.
Further reading
Consult the instructions for your specific door and opener before performing maintenance or safety checks.