How to Fix Bubbling, Peeling, and Cracking Drywall Tape

Drywall tape plays a crucial role in creating smooth, seamless walls and ceilings. When properly installed, it reinforces drywall joints and helps prevent visible seams from appearing over time. However, bubbling, peeling, and cracking drywall tape can develop due to moisture, poor installation techniques, structural movement, or aging materials. These issues not only affect the appearance of your walls but can also lead to more extensive drywall damage if left untreated.
At London Drywallers, we help homeowners and businesses throughout London, Ontario restore damaged drywall and achieve professional-quality finishes. Understanding the causes of drywall tape failure and the proper repair methods can help you maintain beautiful, durable walls.
What Causes Drywall Tape to Bubble?
Bubbling drywall tape occurs when sections of tape separate from the drywall surface, creating raised areas or air pockets beneath the tape. This problem is often caused by:
- Insufficient joint compound applied beneath the tape during installation
- Air trapped under the tape during application
- Poor adhesion due to dusty or dirty surfaces
- Moisture exposure that weakens the bond between the tape and drywall
While small bubbles may seem like a minor cosmetic issue, they often indicate underlying installation problems that should be addressed promptly.
Why Drywall Tape Peels Away
Peeling drywall tape is a more advanced form of tape failure. In this situation, the tape begins lifting away from the wall or ceiling entirely.
Common causes include:
Excess Moisture
Bathrooms, kitchens, basements, and other high-humidity areas can contribute to tape deterioration over time. Water leaks and condensation are particularly damaging.
Poor Initial Installation
If the tape was not properly embedded into the joint compound, it may eventually lose adhesion and begin peeling.
Aging Materials
Older drywall repairs may naturally deteriorate after years of exposure to temperature changes, humidity fluctuations, and building movement.
Understanding Cracked Drywall Tape
Cracks often appear along drywall seams when the underlying tape or joint compound can no longer accommodate movement within the building structure.
Common causes include:
- Seasonal expansion and contraction
- Foundation settling
- Improper framing movement
- Insufficient joint compound coverage
- Low-quality installation methods
Cracked drywall tape can make even recently painted walls appear worn and neglected.
How to Repair Bubbling Drywall Tape
The repair process depends on the extent of the damage.
Step 1: Remove the Damaged Area
Using a utility knife, carefully cut away the bubbled section of tape. Remove all loose material to create a stable repair surface.
Step 2: Prepare the Surface
Sand the surrounding area lightly and remove any dust or debris. A clean surface helps ensure proper adhesion.
Step 3: Apply New Joint Compound
Spread a thin layer of joint compound over the damaged seam.
Step 4: Install New Tape
Embed new drywall tape into the wet compound and smooth out any air pockets.
Step 5: Finish and Sand
Apply additional coats of joint compound, allowing each coat to dry completely before sanding. Once smooth, prime and paint the repaired area.
How to Fix Peeling Drywall Tape
When tape has begun peeling significantly, spot repairs are often ineffective. The best approach is usually to remove the affected section entirely and reinstall new tape.
This process involves:
- Removing all loose tape
- Inspecting for moisture damage
- Repairing any underlying drywall issues
- Retaping the joint
- Applying multiple finishing coats
- Sanding and repainting
Professional repairs help ensure the problem does not return shortly after completion.
Repairing Cracked Drywall Tape
For cracked seams, simply applying more compound over the crack rarely provides a long-term solution.
Instead, professionals typically:
- Remove the cracked section.
- Assess the cause of movement.
- Reinforce the seam with new tape.
- Apply fresh joint compound.
- Finish and sand for a smooth appearance.
Addressing the root cause of the crack is essential for lasting results.
Preventing Future Drywall Tape Problems
Preventive measures can significantly extend the life of drywall finishes.
Control Indoor Humidity
Maintaining proper humidity levels helps reduce moisture-related tape failures.
Address Leaks Quickly
Even minor plumbing or roof leaks can compromise drywall tape over time.
Use Quality Materials
High-quality tape and joint compounds typically provide stronger adhesion and greater durability.
Ensure Proper Installation
Correct taping techniques are critical to preventing bubbling, peeling, and cracking. Professional drywall finishing often saves time and money in the long run.
When to Call a Professional
While some minor drywall tape repairs can be handled by experienced DIY homeowners, larger repairs often require professional expertise. Matching existing textures, achieving invisible seams, and addressing underlying structural or moisture issues can be challenging without the proper tools and experience.
Professional drywall contractors can quickly identify the cause of tape failure and provide repairs that blend seamlessly with the surrounding wall.
Trust London Drywallers for Expert Drywall Repairs
Bubbling, peeling, and cracking drywall tape can diminish the appearance of your home or business and may signal deeper issues that need attention. Whether you need a small repair or extensive drywall restoration, London Drywallers provides reliable drywall repair and finishing services throughout London, Ontario.
Our experienced team delivers smooth, durable results that restore the beauty and integrity of your walls and ceilings. Contact London Drywallers today to learn more about our professional drywall repair solutions.









