How to Replace a Sliding Door Lock | Easy DIY Fix!

If your sliding door won’t lock properly or is difficult to close, the issue could be a worn-out handle lock or a misaligned keeper. In this guide, I’ll walk you through replacing the sliding door lock set, including unboxing, removal, installation, and adjustment. This fix is perfect for aluminium or standard household sliding doors.

Replace a sliding door lock

🪛Step-by-Step Instructions

Step 1:📦Unboxing the New Sliding Door Lock Set

Start by unboxing your new sliding door lock set. It typically includes:

Sliding door lock set.

• 1 × Handle Lock (inside + outside)
• 1 × Lock Keeper (strike plate)
• 2 × Keys

Step 2:🔧Removing the Old Lock Handle

1. Using a Phillips screwdriver, remove the two screws holding the old handle lock in place.
   
   

   

   Remove 2 screws.

   
   
2. Once loose, gently pry off the front and back handles using a flathead screwdriver.
   
   

   

   Pry the lock using screwdriver.

   
   
3. Remove the old lock and set it aside — you’ll immediately notice if it’s worn or damaged.
   
   

   

   Damaged old lock.

   
   

Step 3:🧰Installing the New Handle Lock

1. Take the new handle lock and remove the packaging screws.
   
   

   

   Remove 2 screws at new handle lock.

   
   
2. Align the new handle on the sliding door where the old one was positioned.
   
   

   

   Align the new handle.

   
   
3. Insert and tighten the two screws — make sure both sides are secured properly.
   
   

   

   Secured both screw. 

   
   
4. Now, test the sliding door — open and close it, and try locking it from both sides. It should move smoothly and lock without resistance.
   
   

   

   Test the sliding door open and close.

   
   

Step 4:🔁Replacing the Lock Keeper (Strike Plate)

1. Unscrew the old keeper mounted on the door frame.
   
   

   

   Remove old keeper.

   
   
2. Align the new keeper in the same position, then secure it using the supplied screws.
   
   
   

   

   Install new keeper.

   
   
3. Close the door and test the locking. If the lock doesn’t catch easily, the keeper may need to be adjusted.
   
   

   

   Check the locking mechanism.

   
   

Step 5:⚙️Adjusting the Keeper for Smooth Operation

Sometimes, the keeper alignment isn’t perfect out of the box. If you:

• Can’t lock the door easily
• Find it hard to close
  

Align the keeper.

Then the keeper may need to be lifted slightly or repositioned. Loosen the screws, adjust the height, and retighten. Re-test until the door closes and locks smoothly.

Step 6:✅Final Test

Do a full function test:

Lock and unlock from the outside using the key.

Use the internal thumb turn to lock/unlock from inside.

Ensure the sliding motion is smooth and the lock engages easily.

🎉Conclusion

Replacing a sliding door lock is a simple yet effective way to restore security and ease of use to your home. With just a few tools and some patience, you can fix your door without calling a professional.

Tools and components

Shopee:

1. Sliding Door Lock Set
2. Screwdriver Set

Lazada:

1. Sliding Door Lock Set
2. Screwdriver Set

TikTok:

1. Sliding Door Lock Set
2. Screwdriver Set

Aliexpress:

1. Sliding Door Lock Set
2. Screwdriver Set

🎥Video

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