Renovating a bathroom is one of the best ways to improve comfort, boost home value, and modernize your space.
But bathroom projects are also one of the most commonly mishandled home renovations — especially in the Seattle & Eastside areas, where moisture, layout, and ventilation are critical.

Here are the top bathroom renovation mistakes homeowners make — and how to avoid each one.

1. Ignoring Proper Waterproofing

Bathrooms deal with constant moisture.
If waterproofing is done incorrectly, it leads to:

• Mold growth

• Soft drywall

• Rotted studs

• Tile failure

• Costly repairs

How to avoid it:
✔ Use cement board (not drywall) in wet areas
✔ Apply waterproof membranes behind tile
✔ Seal all gaps around tubs, niches, and valves
✔ Hire a contractor experienced in moisture control (very important in the PNW)

2. Choosing the Wrong Flooring

Not all flooring works well in bathrooms.

Common mistakes:

• Using LVP that’s not fully waterproof

• Installing hardwood in wet areas

• Choosing polished tile (slippery when wet)

How to avoid it:
✔ Choose tile, waterproof LVP, or porcelain
✔ Select non-slip finishes for safety
✔ Ensure proper subfloor leveling before installation

3. Poor Ventilation

Seattle’s humidity makes ventilation a must.

Signs of poor ventilation:

• Foggy mirrors

• Moisture on walls

• Peeling paint

• Mild musty smell

How to avoid it:
✔ Install a bathroom fan with the correct CFM rating
✔ Use timers or humidity-controlled switches
✔ Keep ducts clean and properly vented outside

4. Not Planning the Layout Correctly

Many homeowners design based on looks instead of function.

Common layout problems:

• Toilet too close to vanity

• Shower door hitting obstacles

• Poor lighting placement

• Not enough storage

How to avoid it:
✔ Measure everything carefully
✔ Consider door swings and traffic flow
✔ Add recessed shelves or niches
✔ Place lighting on both sides of the mirror (not overhead)

5. Cheap Fixtures and Materials

Trying to save on fixtures can lead to problems later.

Mistakes include:

• Low-quality shower valves

• Cheap faucets that leak

• Thin shower glass

• Weak vanity finishes

How to avoid it:
✔ Invest in durable, moisture-resistant materials
✔ Choose well-known brands with warranties
✔ Pick solid wood or high-quality MDF vanities

6. Forgetting Storage

Bathrooms always need more storage than you think.

Common issues:

• No drawers

• No towel space

• Not enough counter area

How to avoid it:
✔ Use floating shelves
✔ Choose vanities with drawer storage
✔ Add recessed niches

7. Overlooking Lighting

Lighting affects how the bathroom feels and functions.

Common lighting mistakes:

• Only using overhead lights

• Dark shower areas

• Harsh or blue-toned lighting

How to avoid it:
✔ Install vanity lights at face height
✔ Add recessed lighting in the shower
✔ Use warm, soft LED bulbs

8. DIY Plumbing or Electrical Work

Bathroom remodels involve major plumbing and electrical changes.
DIY mistakes often cause:

• Leaks

• Poor drainage

• Electrical issues

• Failed inspections

How to avoid it:
✔ Always hire licensed professionals
✔ Make sure work meets WA State and local city codes
✔ Pull permits when required

9. Underestimating the Budget

Bathroom projects often cost more than expected due to:

• Hidden water damage

• Outdated plumbing

• Electrical upgrades

• Moisture issues

How to avoid it:
✔ Set a realistic budget with a 10–20% buffer
✔ Get a detailed estimate from your contractor
✔ Plan ahead to avoid mid-project changes

10. Rushing the Project

Bathrooms require precise installation and drying times.
Rushing can cause:

• Tile failure

• Paint issues

• Leaks

• Poor workmanship

How to avoid it:
✔ Work with contractors you trust
✔ Allow proper drying times
✔ Avoid scheduling back-to-back trades too tightly

How Eastside Home Expert Helps You Avoid These Mistakes

When we renovate bathrooms, we focus on:

✔ Waterproofing & moisture management
✔ Quality materials built for PNW climate
✔ Correct plumbing & electrical work
✔ Clean, professional tile installation
✔ Smooth scheduling & communication
✔ One-year labor warranty

Serving Bellevue, Redmond, Kirkland, Sammamish, and all Seattle/Eastside areas.

Ready to Renovate Your Bathroom?

📞 Office: (425) 600-2000
📱 Cell: (425) 598-1189
📧 info@eastsidehomeexpert.com
🌐 www.eastsideexpert.com

We’ll help you upgrade your bathroom the right way — with no mistakes and no stress.