Types of Garage Door Bottom Seals
Many homeowners know that adding weatherstripping to doors and windows can help keep indoor temperatures comfortable and save on energy bills.
But not everyone realizes that the same goes for garage doors – and the bottom seal does more than just help regulate the temperature.
Here’s what you need to know about different types of garage door bottom seals and why your garage door may need them.
The Purpose of Garage Door Bottom Seals
Typically crafted from rubber or vinyl, they’re placed along the bottom edge of the garage door where it meets the floor.
These seals serve multiple purposes and come pre-installed on most new garage doors. However, like other components, they can deteriorate with time. You may notice that your garage feels draftier when they aren’t working as well. A few other signs you may need a replacement include:
- The temperature in your garage changing dramatically with the weather. It can be very hot in summer, or very cold in winter.
- Seeing evidence of bugs, mice, or other outdoor critters in your garage.
- Noticing signs of moisture in the garage, like rust, high humidity, puddles by the entrance, or even mold and mildew.
- Your energy bill increasing more than usual.
If your garage door is older (they typically last around 15-30 years), it’s possible that the seal looks fine but has cracks and gaps that make it less effective. The lifespan of garage door bottom seals varies depending on the environment and how often they’re used.
If you’re not sure if your bottom seal needs replacing, contact Precision to check it out for you!
Common Types of Garage Door Bottom Seals
- Bulb seals are bulb-shaped and attach to the bottom of the garage door. They compress against the ground when the door closes, making them a good choice for uneven floors.
- Beaded seals have a ridge along their edge that fits into a track on the door’s bottom. They’re most effective at sealing out drafts and pests when used on flat surfaces.
- J-type seals have a J-shaped profile and rest against the garage floor when the door is closed. They block drafts, water, and debris and are made of durable materials like rubber or PVC.
- T-type seals, or threshold seals, are installed on the garage floor. They have a T-shaped profile and prevent water, leaves, and pests from entering. Ideal for sealing large gaps or uneven surfaces.
Is your current weatherstripping worn out? We can help! Professional Precision technicians can replace all types of garage door bottom seals.

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