Have you ever noticed a visible gap beneath your garage door? That small opening might seem harmless, but it can lead to big problems like water damage, pest entry, and higher energy bills. You may wonder, why is there a gap under my garage door? This guide will uncover the causes and how to fix it quickly.
By understanding what creates these gaps, such as uneven floors, worn weather seals, or track issues, you’ll be able to spot the problem early and avoid costly garage door repairs. We will walk you through clear solutions to seal your door correctly. Keep reading to protect your home, boost efficiency, and take back control of your garage’s safety and comfort.
Common Causes of Gaps Under Garage Doors
A gap under your garage door usually means something is not aligned, sealed, or appropriately structured. Here are the most common reasons your garage door is not flush with the floor.
Worn-Out Weatherstripping
Weatherstripping seals your garage door to the floor. Over time, it cracks or falls off, leaving gaps. Replacing it is easy and helps block drafts, moisture, and pests.
Uneven Garage Floor
A sloped or cracked garage floor causes gaps under the door. Settling soil, roots, or poor construction can create dips that let in water, pests, and cold air.
Misaligned Tracks
When garage door tracks shift or loosen, the door may not close evenly. This causes one side to lift higher, leaving a gap that affects security and insulation.
Sagging Garage Door Panels
Old or weak garage door panels may sag, especially at the corners. This prevents the door from sealing tightly, allowing light, pests, and air to enter underneath.
Improper Installation
A garage door not installed level creates lasting gaps. Misaligned brackets, the wrong door size, or poor adjustments prevent the door from sealing properly, leading to energy loss and long-term issues.
Potential Risks of Ignoring the Gap Under My Garage Doors
Leaving a gap under your garage door might seem harmless, but it could lead to expensive damage or even compromise your safety. Here’s what to watch out for.
Energy Loss
Gaps allow air drafts that affect indoor temperatures. In winter, warm air escapes, and in summer, hot air enters. This forces your HVAC system to work harder, increasing energy bills and reducing home comfort.
Pest Intrusion
Small animals like mice, snakes, and insects can easily slip through even tiny openings. Gaps under garage doors are an open invitation for pests to enter your garage and, potentially, your home.
Water Damage
Rainwater or snow melt can seep through floor-level gaps and pool inside your garage. Over time, this can lead to mold growth, structural floor damage, and ruined belongings stored near the entrance.
Security Concerns
A visible gap may make it easier for intruders to pry the door open. Even a small opening reduces the overall security of your home and exposes you to potential break-ins.
DIY Inspection: Identifying the Source of the Gap Under My Garage Doors
If you’re wondering, “Why is there a gap under my garage door?” start by inspecting it yourself. Here’s how to locate the cause before calling a professional.
Step-by-Step Inspection Guide
- Close the garage door completely.
- Observe from inside during daylight to spotlight leaks.
- Run your hand along the bottom edge to feel for uneven sections.
- Check weatherstripping for wear or detachment.
- Examine the floor for dips or cracks.
- Inspect the tracks for alignment and damage.
Tools You Will Need
- Flashlight
- Measuring tape
- Level tool
- Flathead screwdriver
- Notepad for notes or photos
Tips to Identify the Problem
If the gap is on one side, check the track alignment. The issue could be with the floor or worn seal if it’s consistent across the bottom. Gaps in the middle may point to sagging panels.
Solutions to Fix the Gap Under My Garage Doors
Gaps under garage doors can cause drafts, water leaks, and pest problems. Once you spot the issue, the proper fix can restore your door’s function and energy efficiency.
Replacing Weatherstripping
Damaged or old weatherstripping is a common reason why gaps appear under garage doors. To replace it, remove the old seal, clean the area, and install a new garage door bottom seal properly.
Adjusting or Replacing Tracks
Misaligned or damaged tracks can prevent your garage door from shutting all the way. Use a level to realign them or replace damaged tracks to keep your door flush with the floor.
Leveling the Garage Floor
If your garage floor has cracks or uneven spots, apply a self-leveling compound or epoxy filler to create a smooth, level surface. For major issues, hire a contractor to pour a new, level concrete slab for better sealing.
Reinforcing or Replacing Door Panels
Sagging panels are often found in older or wooden garage doors. Add support bars or replace the panels to improve the structure and help the garage door close tightly without gaps.
Professional Realignment
A garage door repair technician can fix alignment issues if nothing else works. Professionals use the right tools to check your system, adjust the tension, and ensure everything works.
Preventative Measures for Gaps Under Garage Doors
Preventing gaps under your garage door starts with consistent care and planning. These maintenance tips can keep your door in shape and prevent future problems.
Routine Maintenance Tips
- Check seals twice a year.
- Clean tracks and lubricate moving parts.
- Test balance by manually lifting the door halfway.
- Inspect for light leaks during daylight hours.
Professional Inspections
Scheduling an annual garage door tune-up can catch problems early. A technician will check springs, rollers, alignment, and sealing to give you peace of mind throughout the year.
Upgrade Your Materials
Choose insulated garage doors and heavy-duty rubber seals for long-lasting protection. Quality materials reduce future repairs, improve energy efficiency, and help prevent gaps from returning under your garage door.
When to Seek Professional Help for Gap Under My Garage Doors
Sometimes, fixing a gap takes more than a DIY fix. If your door sags, doesn’t close fully, or the floor needs leveling, it’s time for garage door repair. When you’ve tried multiple fixes and still wonder, why is there a gap under my garage door?, calling a technician is your best move.
Garage door experts can find hidden issues you might miss. Their experience, tools, and proper training help ensure every part works safely and smoothly. Professional garage door repair prevents further damage, saves time, and ensures your door seals tightly again.
FAQs About Gap Under My Garage Doors
Why Does My Garage Door Have a Gap on One Side?
A gap on one side usually means your garage door tracks are misaligned or your floor is uneven. If not fixed soon, this can prevent the door from sealing properly and cause energy loss, pest entry, and long-term wear.
Will Sealing the Gap Improve My Home’s Energy Efficiency?
Yes, sealing the gap under your new garage door helps keep your home warmer in winter and cooler in summer. It blocks cold drafts and hot air, reducing energy waste and lowering your heating and cooling bills all year.
Is It Normal to Have a Small Gap Under the Garage Door?
No, even a small gap under your garage door isn’t normal. It can lead to air leaks, water damage, or pests getting in. Sealing it early prevents bigger problems and keeps your garage well-protected and energy-efficient.
What is the Best Way to Level My Garage Floor to Fix the Door Gap?
For small dips in the floor, use a self-leveling concrete compound. If the slope or damage is severe, hiring a contractor to pour new concrete is the safest and most effective long-term solution.
Conclusion
Noticing a gap under your garage door might seem like a small issue, but it can lead to serious problems. If you have ever asked yourself why is there a gap under my garage door, now you know the reasons. Taking action early can prevent damage, save money, and protect your home.
Problems like worn weather seals, misaligned tracks, or uneven floors can be fixed with the right tools or help. When repairs seem too difficult or unsafe, it is best to get professional service. You can trust garage door repair in Mesa, AZ, from JT’s Overhead Doors to handle it quickly and safely.
At JT’s Overhead Doors, we care about your comfort and home security. Let our experts inspect, repair, and seal your garage door the right way. Contact us today to schedule reliable service and keep your garage protected from gaps, weather, and unwanted pests.
End Note
At JT’s Overhead Doors, we know how important it is to have a garage door that works smoothly and seals tightly. Whether you need regular garage door maintenance, emergency service, or broken spring replacement, our skilled team is ready to help you keep your garage door in top shape.
We offer a full range of garage door services and garage door repairs to fix any issue, big or small. From new garage doors and Safeway doors to powerful LiftMaster openers and other garage door openers, we’ve got everything to match your needs. Be sure to check out our coupons for great savings and browse our gallery to see recent projects we’ve completed.
If you’re located in Mesa or nearby, visit our service areas page to see if we serve your neighborhood. Learn more About Us, read our helpful Blog, and follow us on Facebook and Instagram for updates. Ready to fix that garage door gap? Contact Us today for fast, reliable service from a team you can trust.
JT’s Overhead Doors
2449 E Lindrick Dr, Gilbert, AZ 85298, United States
+14806623315
