Aluminum is a durable, long-lasting solution compared to vinyl siding. But, it can have its downsides. Loose aluminum siding is a common problem among homeowners. The causes of this problem are many, but the effect is usually the same; aluminum siding becomes loose and does not sit firmly against the side of your home. This can cause major damage to exterior walls by allowing water into gaps between siding panels, leaving your home exposed to the elements. Luckily, there are several ways that one can fix loose aluminum siding.
Learn how to fix loose pieces of aluminum siding in this blog post. Fixing this problem will keep your house looking its best and prevent damage to the exterior walls.
- Siding unlock tool, also known as a siding removal tool
- Hammer
- Galvanized steel or aluminum nails
- Ladder, if necessary
- Caulking or aluminum siding adhesive
First, try tightening the fasteners along the bottom edge of each panel using a hammer. Sometimes, the nails will become loose over time allowing the siding to slide back and forth. Consequently, this can cause panels to pop loose from the wall.
Use a mallet to nail down the nails in the lip of the aluminum siding. Make sure the nails are as tight as they can go. If the siding is nailed down but there is still a bend or looseness, you will need to repair the piece by removing and reattaching the panel.

1. Buy a siding unlock tool
2. Find the loose panel
3. Remove the loose siding panel
4. Reconnect the siding
If the siding is only loose, you can lock it back into place by pushing it up firmly. It should reconnect with the upper piece. Next, slide the bottom lip back into place and push it firmly to lock it in. You could also add a bit of caulking to the grove to help the siding stick together. Wipe away the caulking from the edges to ensure it doesn’t show.
Note: Aluminium siding is known for its sharp edges. It’s a good idea to wear thick, durable gloves while handling aluminum siding.

5. Refasten the siding with nails
When To Replace Your Aluminum Siding
Are you constantly finding loose pieces of aluminum siding on your house? This could be a sign that your siding needs more than repair. Heat, rain, and other elements can impact your aluminum siding, leaving it bent, warped, or damaged. In this situation, a replacement will be more effective than repair.
Alliance Exteriors Inc. is a trusted siding company that offers wood, aluminum, and vinyl siding services. We can visit any location in the Greater Toronto Area to install new siding on your home. Call us today for more information.