"Fixing a Crack in Your Bedroom Wall: A Step-by-Step Guide"

Nicole Jun 21, 2026

Discovering a crack in your bedroom wall can be disconcerting, but don't let it keep you up at night just yet. This article will guide you through understanding, assessing, and addressing this common household issue. Let's dive in.

Understanding Wall Cracks: Causes and Types

Wall cracks are not uncommon in homes, and they can occur due to various reasons. Understanding the cause can help you determine the best course of action.

Common Causes of Wall Cracks

  • Settlement: Over time, foundations can settle, causing walls to shift and crack.
  • Moisture: Excessive moisture can lead to expansion and contraction of walls, resulting in cracks.
  • Structural Issues: Problems with the home's structure, such as damaged framing or improperly supported walls, can cause cracks.
  • Shrinkage: Newer homes may experience cracks due to shrinkage as the building materials dry and settle.

Types of Wall Cracks

  • Horizontal Cracks: These are often indicative of structural issues and should be addressed promptly.
  • Vertical Cracks: These are usually caused by settlement or shrinkage and are typically less severe.
  • Diagonal Cracks: These can be caused by various issues, including settlement, moisture, or structural problems.

Assessing the Damage: When to Worry

Not all wall cracks are created equal. While some may be purely cosmetic, others could indicate serious underlying issues. Here's how to tell the difference:

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Cosmetic Cracks vs. Structural Cracks

Cosmetic Cracks Structural Cracks
Narrow (hairline) and short Wide and long
Random and irregular Straight and consistent
No visible signs of movement Widening over time

If you notice any signs of movement or widening, it's crucial to have your home professionally inspected.

Repairing Wall Cracks: DIY vs. Professional

Small, cosmetic cracks can often be repaired using DIY methods. However, larger or structural cracks should always be addressed by a professional.

DIY Wall Crack Repair

  • Clean the crack using a wire brush and vacuum.
  • Apply a flexible patching compound, following the manufacturer's instructions.
  • Allow the compound to dry, then sand and paint as needed.

When to Call a Professional

  • If the crack is wide or long (more than 1/4 inch or 6mm).
  • If the crack is horizontal or diagonal.
  • If the crack is accompanied by other signs of damage, such as bulging walls or sticking doors.
  • If you're unsure about the cause or severity of the crack.

Professional repair methods may include using epoxy injections, carbon fiber strips, or even replacing damaged sections of wall. They will also be able to determine the underlying cause and address it appropriately.

Lighting, Home Decor, Home Décor
Lighting, Home Decor, Home Décor

Preventing Wall Cracks in the Future

While you can't prevent your home from settling, there are steps you can take to minimize the risk of wall cracks:

  • Ensure your home's foundation is in good condition.
  • Keep your home's moisture levels in check.
  • Address any structural issues promptly.
  • Consider using flexible joint tape when finishing drywall to accommodate minor movement.

Regular home maintenance can help you catch potential issues early, saving you time, money, and stress in the long run.

When Should You Worry About Cracks in Your Walls?
When Should You Worry About Cracks in Your Walls?
a hole in the wall that has been torn open
a hole in the wall that has been torn open
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How To Patch A Crack So It Doesn't Come Back
a white wall with cracks in it
a white wall with cracks in it
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How to Fix Wall Cracks: Simple Repairs for Smooth, Clean Walls
the corner of a room that has been torn off with white paint and chipping
the corner of a room that has been torn off with white paint and chipping
(3) Instagram Instagram
(3) Instagram Instagram
Repair Wall Crack
Repair Wall Crack
725K views · 1.7K reactions | I got hate… …from a few decorators for sharing something like this before but then I thought, maybe someone out there could do with learning this too so I decided to do it anyway!  Here is a step by step DIY guide on how to fill a crack in a wall or ceiling. You can use this method for both plaster board cracks and solid walls.  Here are the product used:  1. Dig out - the @hamilton_decorating_tools precision scraper creates the perfect v groove.  2. Dust - remove the loose bits. I used the @flex_tools_uk VCE 33 M class extractor  3. Seal - @zinsseruk peel stop is amazing stuff!  4. Filler - the @toupretuk walls and ceilings filler is amazing stuff and doesn’t flash through. 5.  Mixing - with the @axusdecor flexi bowl. Let the filler dry and squash it to make it clean!  6.  Applying filler - @woosterbrushcompany flexi filling knives filled with eases  7. Scrim tape - this bonds the joints and this super thin stuff from @theglassfabriccompany is genuinely awesome  8. Re fill 9. Sand - I used the @flex_tools_uk battery powered 125 random orbit sander with 120grit  10. Paint - @johnstones_trade Perfect Matt is just durable the opacity is great and only 2% sheen too! Applied with the @prodecdecorating ice fusion 9” sleeve 11: admire - here I used my hand which unfortunately you can’t buy online 😂 but you can book a consultation with me and I can walk you through interior decor and panelling guides. | Panelling Perfect | Facebook
725K views · 1.7K reactions | I got hate… …from a few decorators for sharing something like this before but then I thought, maybe someone out there could do with learning this too so I decided to do it anyway! Here is a step by step DIY guide on how to fill a crack in a wall or ceiling. You can use this method for both plaster board cracks and solid walls. Here are the product used: 1. Dig out - the @hamilton_decorating_tools precision scraper creates the perfect v groove. 2. Dust - remove the loose bits. I used the @flex_tools_uk VCE 33 M class extractor 3. Seal - @zinsseruk peel stop is amazing stuff! 4. Filler - the @toupretuk walls and ceilings filler is amazing stuff and doesn’t flash through. 5. Mixing - with the @axusdecor flexi bowl. Let the filler dry and squash it to make it clean! 6. Applying filler - @woosterbrushcompany flexi filling knives filled with eases 7. Scrim tape - this bonds the joints and this super thin stuff from @theglassfabriccompany is genuinely awesome 8. Re fill 9. Sand - I used the @flex_tools_uk battery powered 125 random orbit sander with 120grit 10. Paint - @johnstones_trade Perfect Matt is just durable the opacity is great and only 2% sheen too! Applied with the @prodecdecorating ice fusion 9” sleeve 11: admire - here I used my hand which unfortunately you can’t buy online 😂 but you can book a consultation with me and I can walk you through interior decor and panelling guides. | Panelling Perfect | Facebook
Repairing Plaster Walls and Attaching Things to Plaster Walls - The Handyguys
Repairing Plaster Walls and Attaching Things to Plaster Walls - The Handyguys
a man holding a paint roller in front of a wall that has been torn off
a man holding a paint roller in front of a wall that has been torn off
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3K views · 25 reactions | How to repair drywall crack. #drywallcrack #drywallrepair #diy #howto #homerepair #handyman #artist #parker #lonetree #colorado | Haus Plans | Facebook
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crack in bedroom wall
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a hole in the wall that has been torn open
a hole in the wall that has been torn open
a hole in the wall that has been torn open
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5 Types Of Cracks In Walls [What Homeowners Need To Know] - uooz.com
5 Types Of Cracks In Walls [What Homeowners Need To Know] - uooz.com
hole in bedroom wall. Feb 2024
hole in bedroom wall. Feb 2024
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How To Fix A Hairline Crack On A Plaster Wall So It Doesn't Come Back — MELANIE LISSACK INTERIORS
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How To Fill A Crack Like A Pro