Garage Door Weather Seal Leaking in Toronto & the GTA
Daylight under the door, wet tracks, and winter drafts usually trace to a compressed bottom seal or shrunk side weatherstripping — not mysterious wall leaks alone.
- Bottom U-rubber wears first
- Side stops seal the jamb line
- Top astragal stops header drafts
- Threshold kits help uneven slabs
What this guide covers
A garage that shares walls with living space makes seal quality a comfort issue. Mice and blowing snow exploit surprisingly small gaps.
We replace bottom seals and perimeter weatherstripping with profiles that match your track and door thickness, then verify close limits so the opener is not fighting a taller seal.
Leak clues by location
Water along the centre of the slab often means bottom seal gaps. Snow at the corners points to side stops. Dust streaks high on the door can mean top seal wear.
Why seals fail in this climate
UV, road salt, and repeated compression set harden rubber. DIY nails through stops create new leak paths. Uneven concrete leaves even a healthy seal looking inadequate.
What our Vaughan technicians watch for
Upright Garage Doors & Springs is family-owned and based in Vaughan. We separate safe homeowner checks from work that involves spring tension, cable rewinding, or opener internals — then give you a written estimate before parts go on the door.
Email [email protected] or call (647) 493-9256 during Sun–Thu 8am–10pm and Fri 8am–4pm.
Safe checks vs call a technician
Safe DIY checks
- Clean the bottom seal and threshold of grit
- Check for daylight with the door closed from inside
- Inspect side stops for cracks or pull-away from the jamb
- Avoid stuffing towels as a long-term “seal”
Call a professional when
- Seal brittle, torn, or missing sections
- Need for threshold on a wavy slab
- Drafts after a new door install that still need adjustment
- Pest entry at the garage corners
Services & related guides
Garage Door Weather Seal Leaking — common questions
When compressed flat, cracked, or leaking — often after several Canadian winters, depending on sun exposure.
A taller seal can change close feel. We set limits correctly after install.
Not on the moving door edge. Use proper door weatherstripping products.
Thickness and retainer style can differ. We match the retainer on your door.
Get help with garage door weather seal leaking
Describe whether you see daylight, water, or snow — and where it enters.