Installing weather stripping on your Mastercraft garage door can be one of the easiest and most cost-effective ways to save on energy costs, keep out unwanted pests, and maintain the right temperature in your garage. By following these instructions, you’ll be able to complete this task yourself, even if you’re a beginner to DIY projects. Let’s dive into a step-by-step guide on how to install weather stripping, troubleshoot common issues, and find the best materials for long-lasting results.
What Is Weather Stripping and Why Does It Matter?
Weather stripping involves sealing the gaps around your garage door to keep out moisture, wind, insects, and even noise. Without it, garages are prone to draftiness and temperature fluctuations. Proper weather stripping offers a tight seal, which helps maintain the temperature inside, reduce heating and cooling costs, and prevent outside elements from entering. Plus, well-sealed doors can enhance security and add a polished look to your garage.
Types of Weather Stripping for Mastercraft Garage Doors
Understanding the different types of weather stripping is crucial before starting the installation. Here are the primary types suitable for Mastercraft garage doors:
- Bottom Seal Strips – Attached to the lower edge of the garage door, these seal the gap between the door and the ground.
- Side and Top Seals – Often made of vinyl or rubber, these strips attach to the frame of the door, sealing the sides and top.
- Threshold Seals – Placed on the garage floor itself, creating a barrier that complements the bottom seal.
- Brush Seals – Used primarily in industrial applications, brush seals are also suitable for homes with high dust, wind, or pest issues.
Tools and Materials Needed
Before beginning, gather these essential tools and materials to ensure a smooth installation process:
- New weather stripping kit (bottom seal, side seal, or threshold as needed)
- Measuring tape
- Utility knife
- Screwdriver or drill
- Pliers
- Cleaning supplies (mild soap, water, sponge)
- Adhesive (if specified in the kit)
Step-by-Step Guide to Installing Weather Stripping on Your Mastercraft Garage Door
Step 1: Measure the Door’s Edges
Start by measuring the width and height of your garage door to determine how much weather stripping material you’ll need.
Step 2: Remove Old Weather Stripping
Using your screwdriver or pliers, carefully remove any old or damaged weather stripping. For bottom seals, you may need to slide it out of its track or cut it with a utility knife if it’s glued down. Ensure the door’s edges are clean and dry before installing new stripping.
Step 3: Install the Bottom Seal
For Mastercraft garage doors, the bottom seal typically slides into a track along the bottom edge of the door:
- Insert one end of the seal into the track.
- Gradually slide it across the door’s width, ensuring a tight fit.
- Trim any excess material using your utility knife.
If your door lacks a track, use adhesive to secure the seal directly onto the door’s bottom.
Step 4: Attach the Side and Top Seals
Next, focus on the side and top edges of the door. Here’s how to attach these strips:
- Align the weather stripping along the frame and mark where it should start and end.
- Drill pilot holes for screws or nails to secure the strips.
- Attach the strips, ensuring they press firmly against the door without hindering its operation.
Step 5: Apply Threshold Seal (Optional)
If you experience water or dirt entering from under the door, a threshold seal can provide an added barrier:
- Measure and cut the threshold seal to fit the door’s width.
- Clean the area on the floor where the seal will go.
- Apply adhesive to the threshold seal, press it firmly onto the ground, and allow it to set before closing the door.

Troubleshooting Common Installation Issues
Even with proper installation, weather stripping might not always perform perfectly. Below are some common issues along with their solutions:
- Uneven Bottom Seal: If the door doesn’t sit level on the ground, the bottom seal may not provide a perfect barrier. You can adjust the threshold or consider using an adjustable bottom seal.
- Gaps Around the Door: For small gaps, use foam insulation tape along the edges to fill any remaining spaces.
- Worn or Damaged Stripping: Regularly inspect and replace weather stripping to maintain effectiveness. High-traffic areas may need replacement every 1–2 years.
Benefits of Regularly Replacing Garage Door Weather Stripping
Over time, weather stripping deteriorates due to weather exposure and regular wear and tear. Here’s why regular replacement is essential:
- Energy Efficiency: Well-sealed doors prevent air leaks, which reduces energy costs by maintaining stable indoor temperatures.
- Enhanced Durability: Replacing weather stripping prevents rust, mold, and moisture damage.
- Better Security: Gaps in the door’s seal can be an entry point for pests and potential intruders, so keeping it intact boosts security.
Choosing the Right Weather Stripping Material
Weather stripping is available in various materials, each with unique benefits. Here’s a quick guide:
- Vinyl: Highly durable and suitable for moderate climates.
- Rubber: Excellent for extreme weather, flexible in both cold and hot temperatures.
- Foam: Easy to install and highly affordable, though less durable.
- Brush: Ideal for areas with dust or pest problems, though not as energy-efficient.
Consider your local climate and garage usage when selecting material for optimal results.
Best Practices for Maintaining Your Weather Stripping
Proper maintenance ensures your weather stripping remains functional for years:
- Inspect Regularly: Check every few months for cracks, gaps, or other damage.
- Clean Frequently: Use mild soap and water to remove debris or mold buildup.
- Lubricate Tracks and Hinges: If your garage door has tracks or hinges, keep them lubricated to prevent excess wear on weather stripping.
- Replace as Needed: Worn seals lose their effectiveness, so replace them promptly when they show signs of wear.
When to Call a Professional
If you encounter challenges during installation or your garage door has structural issues, consider hiring a professional. For instance:
- Complex Door Designs: Doors with unique designs or windows may need custom-fit weather stripping.
- Significant Structural Issues: Gaps due to misaligned frames may require expert realignment.
- Time Constraints: DIY can be time-intensive; a professional can finish quickly with quality results.
Estimated Costs for Mastercraft Garage Door Weather Stripping
Cost depends on the type of stripping, materials, and whether you choose DIY or professional installation. Here’s a breakdown:
- DIY Materials Only: $10–$50
- Professional Installation: $100–$300
- High-End Custom Solutions: $200–$500
Investing in weather stripping is cost-effective, offering energy savings and increased home value.
FAQs
1. How often should I replace weather stripping?
Replacement every 1–2 years is common for heavily used doors, though high-quality materials may last longer.
2. What is the best weather stripping for a cold climate?
Rubber or vinyl stripping performs best in cold weather, as it remains flexible and durable.
3. Can I install weather stripping myself?
Yes, weather stripping installation is a DIY-friendly project, provided you follow proper instructions.
4. How do I know if my garage door needs new weather stripping?
Signs include drafts, visible gaps, pest entry, or a noticeable increase in energy bills.
Conclusion
Installing or replacing Mastercraft garage door weather stripping is a practical way to boost your home’s energy efficiency, security, and comfort. By following these clear, step-by-step instructions, you can seal your garage against weather, pests, and other elements without needing a professional. Regular maintenance, proper materials, and attention to detail ensure long-lasting results, making this a wise investment for any homeowner. So grab your tools, follow this guide, and enjoy a well-protected, energy-efficient garage.