DIY Renovation Gone Wrong? How to Fix Common Mistakes
From bad drywall patches to crooked trim, here's how to fix the most common DIY renovation mistakes and when to call a professional.
Nookmaster Team
From bad drywall patches to crooked trim, here's how to fix the most common DIY renovation mistakes and when to call a professional.
Nookmaster Team
YouTube makes it look so easy. A weekend project, a few hundred dollars, and your bathroom will look like it belongs in a magazine. But somewhere between the tutorial and reality, things went wrong.
If your DIY renovation didn’t turn out the way you hoped, you’re not alone. We fix DIY projects gone wrong regularly, and there’s no shame in it. Here’s how to assess what went wrong and determine the best path to fixing it.
Drywall looks simple but requires real skill to finish well. Common problems:
Visible seams and tape lines What happened: The mud wasn’t feathered out enough, or too few coats were applied. How to fix it: Skim coat the entire area with a thin layer of joint compound, then sand smooth. For severe cases, the tape may need to be replaced.
Bumpy texture or orange peel What happened: The texture was applied inconsistently or the wall wasn’t prepared properly. How to fix it: Skim coat to smooth, then either leave smooth or reapply texture consistently.
Cracks in patches What happened: The patch wasn’t properly supported, or different materials are moving at different rates. How to fix it: Cut out the cracked area, install proper backing, and redo the patch with mesh tape.
Paint seems like the easiest DIY task, but mistakes are common:
Brush marks and roller lines What happened: Wrong applicator, paint too thick, or working on dried edges. How to fix it: Sand the area smooth and repaint with proper technique, maintaining a wet edge.
Peeling or bubbling What happened: Surface wasn’t cleaned or primed, or paint was applied over moisture. How to fix it: Scrape all loose paint, address any moisture issues, prime, and repaint.
Uneven sheen or color variation What happened: Paint wasn’t mixed well, or coats were applied inconsistently. How to fix it: Apply one more coat evenly across the entire wall (not just the bad spots).
Trim installation requires precision that’s hard to achieve without practice:
Gaps at corners What happened: Measurements were off, or the walls aren’t perfectly square (they rarely are). How to fix it: Caulk can hide small gaps. Larger gaps require re-cutting the trim or using a coping technique.
Trim that’s not level What happened: The trim was installed to a floor or ceiling that isn’t level, rather than to a level line. How to fix it: Remove and reinstall, splitting the difference between level and following the room’s lines.
Nail holes showing What happened: Holes weren’t filled properly, or filler shrank. How to fix it: Fill with proper wood filler, sand, and repaint. Use non-shrinking filler.
Flooring installation has little margin for error:
Gaps between planks What happened: Planks weren’t locked together properly, or there’s a humidity issue. How to fix it: For minor gaps, some can be fixed with colored filler. Major issues may require removing and reinstalling sections.
Uneven transitions What happened: No transition strip installed, or the wrong type was used. How to fix it: Install appropriate transition strips, which may require cutting into existing flooring.
Squeaks and movement What happened: Subfloor wasn’t properly prepared, or floating floor is too tight against walls. How to fix it: Identify the source of the squeak and address it. For floating floors, check that expansion gaps are adequate.
Before calling a professional, honestly assess:
Here’s something to consider: fixing a DIY mistake often costs more than if a professional had done it from the start.
Why? Because now there’s additional work:
For example, a poorly installed backsplash might cost $500 to remove, $100 to repair the drywall behind it, and then $800 to install correctly. The total $1,400 is more than the $1,000 it would have cost originally.
This isn’t to discourage DIY. Many projects are perfectly appropriate for homeowners. It’s just worth considering the full picture before starting.
When homeowners call us to fix DIY projects, here’s our approach:
1. No judgment We’ve seen it all, and we respect that you tried. DIY is a valuable skill, and not every project works out.
2. Honest assessment We’ll tell you exactly what went wrong and what it takes to fix it. Sometimes that’s less work than you fear. Sometimes it’s more.
3. Clear options You might have choices: a quick fix that’s good enough, or a complete redo that’s perfect. We’ll explain both.
4. Fair pricing We quote what the repair actually requires, not a premium for “fixing someone else’s work.”
Here’s what we fix most often:
| Project | Common Issue | Typical Solution |
|---|---|---|
| Drywall | Visible patches | Skim coat and repaint section |
| Paint | Roller marks/drips | Sand and repaint |
| Trim | Gaps and unlevel | Re-install with proper techniques |
| Flooring | Gaps, squeaks | Section repair or transition fixes |
| Accent wall | Uneven slats | Remove and rebuild properly |
| Cabinet painting | Brush marks, drips | Sand and respray |
If you’re in the middle of a DIY project and things are going sideways, don’t be afraid to pause. Sometimes the best decision is to stop before you make it worse.
Signs it’s time to call a professional:
There’s no shame in getting help. Professional finishers have years of practice and specialized tools. Matching that with YouTube tutorials and a weekend isn’t always realistic.
If your DIY project didn’t work out the way you hoped, reach out to us. We’ll give you an honest assessment and clear quote to get your project finished properly.
No judgment. Just solutions.
Stuck in the middle of a DIY project? Contact us for advice or a repair quote.
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If you have questions about finishing work or need help with your project, we're happy to chat.