DuraSeal Installation Tips

Keeping your garage sealed from drafts, moisture, insects, and energy loss starts with correct installation of your DuraSeal garage door seal. This professional-grade garage door weather stripping kit — made from a foamed PVC base and flexible PVC fin — comes coiled for shipping convenience and provides a durable side and top seal for most residential garage doors.

Before getting started, we recommend reviewing the full DuraSeal installation instructions.

Whether you’re a seasoned DIYer or first-time installer, these tips will help ensure a smooth and successful installation.

Why Handling Matters: PVC & Temperature

Because the DuraSeal garage door seal is made from PVC, its stiffness and flexibility change with temperature. In colder weather, PVC becomes rigid and more likely to crack if it’s bent or stressed too quickly.

Pro Tip:

• Best working temperature: Above 50°F — however, 60°F+ will provide the easiest handling and smoothest install
• If your strip arrives cold (from outdoor delivery or winter conditions), let it warm up to room temperature before uncoiling
• Avoid forcing sharp bends during cold installs — gradual warming prevents cracking and material stress

Proper temperature handling is one of the most important steps for long-lasting garage door weather stripping performance.

Prep the Seal Before Installing

Because the seal ships coiled, it won’t lie flat right away. Once the weather stripping is room temperature, proper prep will help ensure accurate fitting:

• Uncoil the seal on a flat surface
• Lay weights along the length to help it relax and straighten
• Allow 24 hours for the coil to flatten naturally
• If working in cold weather, warm indoors first

This prep work upfront makes measuring and installation much easier — and results in a cleaner, tighter seal.

Measure and Cut for a Custom Fit

Once the strip is relaxed:

• Measure your door opening width and height carefully
• Cut the strip to fit the top/header section first, then each side
• Use a utility knife or panel shears for clean cuts

Always leave a little extra before trimming down — it’s easier to remove material than add it back.

Nail the Seal in Place (“Soft Start” Method)

The DuraSeal kit includes finish nails designed to match the seal. For best results:

• Use the pre-tapped holes where provided
• Start nails partway in first — this gives you wiggle room for small adjustments
• Keep the PVC fin facing the inside of the garage

Finish nailing only after confirming the seal contacts the door properly when closed. Installing too tight or too loose can interfere with door operation or reduce sealing effectiveness.

Check Your Work & Troubleshoot

Once installed:

• Close the garage door and observe how the seal engages
• Check for consistent contact along the top and both sides

If you notice gaps, stretching, or curling:

• Double-check measurements
• Ensure the strip was straightened thoroughly before nailing
• For stubborn curl, allow additional time at room temperature before re-installing

Taking a few extra minutes to fine-tune your garage door weather stripping ensures better long-term performance.

Why Proper Sealing Makes a Difference

A well-installed DuraSeal garage door seal does more than block cold air. It:

• Reduces energy loss and utility costs
• Keeps out dust, insects, water, and debris
• Improves comfort in garages used as workshops or storage spaces
• Helps protect stored items from moisture exposure

When properly installed, high-quality garage door weather stripping can make a noticeable difference year-round.

For a flexible, durable solution you can install yourself, shop the DuraSeal Garage Door Side & Top Weather Stripping Kit — a professional-grade seal for residential garage doors, available in multiple colors and lengths to fit a range of openings.