Installing Rubber on a Threshold: A Comprehensive Guide
Installing rubber on a threshold is a practical and cost-effective way to enhance the safety, durability, and aesthetics of your doorways. This guide will walk you through the process, from gathering materials to completing the installation, ensuring a professional finish that will last for years.
Materials Needed
Before you begin, make sure you have the following materials and tools on hand:
- Rubber threshold strip (ensure it's the correct size for your doorway)
- Circular saw or hacksaw
- Jigsaw (for curved or irregular cuts)
- Tape measure
- Pencil
- Screwdriver (Philips or flathead, depending on your screws)
- Screws (usually provided with the threshold, but ensure they're suitable for your surface)
- Silicone sealant (optional, for added weatherproofing)
Preparation: Measuring and Cutting
Accurate measurement is crucial for a perfect fit. Here's how to measure and cut your rubber threshold:

- Measure the width of your doorway, including any rebate (the recess where the door sits).
- Measure the depth of the threshold you want to install. A common depth is 1-1.5 inches, but this can vary depending on your needs.
- Mark these measurements on the rubber threshold strip using a pencil.
- Using a circular saw or hacksaw, cut the rubber strip to the measured width. If your doorway has curves or irregular shapes, you may need to use a jigsaw for a precise fit.
Installing the Rubber Threshold
Now that your threshold is cut to size, it's time to install it. Here's how:
- If your doorway has a rebate, ensure the threshold fits snugly within it. If not, you may need to adjust your measurements or use a different threshold.
- Position the threshold in place, ensuring it's level and centered.
- Mark the screw holes by pressing the threshold firmly into place and marking through the predrilled holes.
- Remove the threshold and drill pilot holes at your marked points. This will make screwing the threshold into place easier and help prevent the rubber from splitting.
- Apply a bead of silicone sealant along the top edge of the threshold (optional, but recommended for added weatherproofing).
- Replace the threshold and secure it in place using the screws provided. Ensure you drive the screws in straight and don't overtighten them, as this can cause the rubber to split.
Finishing Touches
Once your threshold is installed, there are a few final steps to ensure it lasts as long as possible:
- Wipe away any excess silicone sealant with a damp cloth.
- Allow the sealant to cure for the recommended time before using the doorway to ensure a strong bond.
- Regularly clean your threshold to remove dirt and debris. This will help prevent wear and tear and keep your doorway looking its best.
Troubleshooting Common Issues
While installing a rubber threshold is a straightforward process, you may encounter some issues. Here are a few common problems and their solutions:

| Issue | Solution |
|---|---|
| The threshold is too wide or too narrow. | Re-measure your doorway and cut the threshold to the correct size. |
| The threshold is not level. | Ensure your doorway is level and, if necessary, use shims to level the threshold during installation. |
| The threshold is splitting or cracking. | Check that you didn't overtighten the screws. If the issue persists, you may need to replace the threshold. |