My Siding Keeps Falling Off – Why? What To Do?

Seeing loose or fallen siding isn't only unsightly, but it can also open additional problems for the house and its residents. But why doesn’t it stay in place? Also, what can you do to ensure it doesn’t fall off? We researched these questions for you, and we found the following answer.

Siding could fall off because of different reasons ranging from old age to moisture retention in the assembly. Generally, you can fix this issue by popping the problematic panel back into its place. But you might need to remove the old or worn panel and install a new piece if it loosens or falls off frequently.

Bear in mind that certain particulars exist when repairing siding panels that keep falling off. So you should continue reading as we talk about this problem and the possible solutions in greater detail.

Construction equipment's used for installing house siding, My Siding Keeps Falling Off - Why? What To Do?

Causes Of Siding That Keeps Falling Off

Generally, siding may fall off because it’s the incorrect length. One panel needs to be uniform with the rest of the set. Otherwise, irregularities in the installation can surface, leading to the board loosening and falling off eventually.

A ripped and broken grey house siding

Aside from an improper installation, siding may also fall off because of other reasons like:


Materials used for siding can deteriorate over time. Vinyl, in particular, may last about 40 years before it needs replacing because the panels have difficulty sticking to their installations. Find out about the estimated lifespans of other siding materials in a later section of this post.

Weather Exposure

Typically, siding needs to be reasonably durable as different weather batters down on it continuously. But a harsh climate encourages siding materials to loosen sooner than later.

Moisture Retention

Certain siding options might use metal sheets or paper seams to help prevent moisture buildup between each panel. But a poor-quality or incorrect underlining may result in moisture retention instead of resistance. The dampness could build up, causing the adhesive or fastener to break down and loosen the siding.

How Do You Fix Vinyl Siding That Came Loose?

Note: The following procedure assumes that the vinyl siding that came loose is still in good condition. If not, you should replace the panel before attaching it to your home’s exterior wall.

What You’ll Need

  • Paint can opener

Step-By-Step Guide

  1. Hook the paint can opening tool to the bottom side of the loose siding.
  2. Maintain sufficient pulling pressure on the hook as you press the bottom of the siding panel with your finger or hand.
  3. Release the hook when you hear a clicking sound.

After hearing the clicking sound, you can also take a few steps back to see if the vinyl siding panel is now secure. Another way to tell that the panel is now in place is to wiggle it lightly.

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You can also watch the video below if you need a visual representation of the steps mentioned above:

How Do You Repair Popped Aluminum Siding?

If the aluminum siding panel is only slightly loose, you can use the procedure mentioned in the previous section to reattach it. However, if the siding panel is about to fall off (or already fell), move forward by following these general steps:

What You’ll Need

  • Siding unlock tool

Step-By-Step Guide

  1. Hook the siding unlock tool to the bottom of the popped aluminum panel.
  2. With the siding panel out, push it back up to reconnect it to the adjacent piece at its top.
  3. Slide the bottom lip of the aluminum siding panel in place.

Check out this siding unlock tool on Amazon.

How To Replace Vinyl Siding?

Remember, age is a factor that can wear out siding, particularly made with vinyl. An old vinyl siding might be more prone to falling off than new a new unit. So replacing the old panel could solve the problem of your vinyl siding that keeps falling.

Wood rot caused by water causing siding damage

So here are the general steps to help you replace old vinyl siding:

What You’ll Need

  • Siding unlock tool
  • Hammer
  • Replacement vinyl siding panel

Step-By-Step Guide

Step #1: Remove The Old Siding

If the old vinyl siding panel is still in its original placement (but seems to be barely hanging on), hook the siding unlock tool to the lower lip of the panel above the loose unit. If you find it tough to insert the unlock tool, slightly lift the panel with your other hand. Then, pry the panel loose.

With one area loose, you can slide the unlock tool or your hand across the panel’s entire lower lip. Next, use the claw of your hammer to remove the newly exposed nails that are fastening the old siding panel in place. Then, pull out the old siding.

Warning: If you’re working on a vinyl siding board near a corner, be careful when handling the panel. Otherwise, you might damage an adjacent J-channel, which might result in additional repairs.

Step #2: Install The New Vinyl Siding

Snap the new siding panel to the same location as the old board. This particular step can be fairly easy to complete if the adjacent panels are still intact.

Next, secure the new vinyl siding board by hammering nails into the holes in its upper trim. Be wary, as you shouldn’t make the nails flush. Instead, you should leave about a dime’s-worth of space to allow the panel to move slightly if needed.

After securing the new panel, lock the installation in place by attaching the board’s lower lip to the newly installed board.

Check out this vinyl siding on Amazon.

Watch the clip below for a visual guide to this procedure:

At this point, you might be wondering if brick insulate is better than siding. If so, read our post on that topic to know the answer to that concern.

How Do You Remove And Replace Old Aluminum Siding?

Worker installing wooden house siding

Take note that removing and replacing aluminum siding often requires more steps than doing the same tasks for vinyl siding. Nonetheless, completing these jobs may not yet warrant help from industry professionals.

So keep reading to gain insights on how to complete these processes, especially if you’re about to go through them:

What You’ll Need

  • Siding unlock tool
  • Crowbar
  • Hammer
  • Utility knife

Step-By-Step Guide

  1. Unhook the lower lip of the siding panel above the old unit.
  2. Insert a crowbar or similar tool into the new opening and glide it across the panel.
  3. Remove the nails securing the old panel with the claw part of your hammer.
  4. Use your utility knife to score the top portion of the new aluminum panel twice.
  5. Fold the panel’s flange outward so the upper trim bends.
  6. Wiggle the flange repeatedly until you can remove it from the board.
  7. Lay the new panel into the same position as the old unit.
  8. Push the new siding panel in, then push it up. You should hear a clicking sound to tell you that it’s now in place.
  9. Drive nails into the panel’s upper trim to secure it.

You can also watch this video to learn additional tips that may help you in removing and replacing old aluminum siding:

How Much Does It Cost To Repair Loose Siding?

Taking advantage of professional labor to repair loose siding may demand overhead costs that range from about $50 to $5,000. These expenses may differ depending on certain factors, such as the location of the property and the materials to use.

How Many Years Does Siding Last?

House contractor checking the house siding if its properly laid

A siding’s lifespan often depends on its material. For instance, wood siding may last about 15 to 40 years with proper maintenance. On the other hand, cedar siding can last up to 30 years, and it might require less frequent care than other wooden siding options. You can also find out how long aluminum siding lasts by reading our post on this particular topic.

Is Replacing Siding Worth It?

Replacing bad siding is essential to help prevent certain problems for the property. With proper siding installed, your house and its residents can experience different benefits:

  • Increase curbside value. Repairing a house’s siding may boost the property’s value by about 76%.
  • Hide structural damage. You can hide patch jobs to the exterior wall by replacing worn-looking siding panels.
  • Enhance energy efficiency. Siding panels, particularly those with foam backing, can help reduce energy leaks that might otherwise become reasons for skyrocketing utility bills.
  • Preserve paint jobs. New siding panels can help protect exterior wall paint finishes.

Final Thoughts

Construction equipment's used for installing house siding

You might be able to keep the siding from falling off by putting it back into its original position. If the problem occurs regularly, it might be better to replace the offending siding panel than place it back. Remember, you should repair loose or fallen siding to help prevent issues, such as exposing structural damage to your home's exterior wall.

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