Bathroom Renovation Vol.20: Vanity Installation Pt.1

u270fufe0f Originally published: 2016-12-12 / ud83dudd04 Rewritten: May 8, 2026

u270fufe0f 2026 Update from DIY Dad: Finishing Touches on the Bathroom/Laundry Room

We’re in the finishing stretch of the bathroom/laundry room renovation u2014 wallpaper up, vanity being installed. This is the phase that demands the most precision.

Wallpaper Tips for Wet Areas

Unlike the rest of the house, wet areas need mold- and moisture-resistant wallpaper u2014 no exceptions.

DIY Dad’s wallpaper selection criteria

• Anti-mold and antibacterial treatment (listed on the label for brand-name products)
• Wipeable surface (vinyl wallpaper is ideal)
• Light color u2014 white to light gray (feels clean, makes the room look larger)
• At least 1.0mm thick (thin wallpaper telegraphs every bump in the substrate)

Vanity Installation Steps

The three essentials: level, connect, caulk.

1. Place the unit in position and check for level front-to-back and side-to-side
2. Connect supply lines to hot and cold shutoff valves (braided flex hose or shower hose)
3. Connect the drain trap (S-trap or P-trap)
4. Screw the unit to the wall
5. Apply caulk along the gap between vanity and wall
6. Run water and check for leaks

The most common problem is a drain trap mismatch. Check the existing drain type (floor drain vs. wall drain) before purchasing your vanity u2014 you may need an adapter.

Finishing with the Washing Machine and Storage Shelf

Washing machine: connect drain hose to drain pan, earth the appliance. Storage shelf: screw into studs or solid backing u2014 never drywall alone.

Landlord’s Perspective: Cost vs. Return

Total materials cost: approximately 250,000 yen. Contractor price for the same work: 800,000 to 1,200,000 yen. DIY Dad considers every renovation project an investment.

ud83dudebf For Anyone Considering a Vanity or Wet Area Renovation

Confirm pipe types and dimensions before you start u2014 that’s the most important step.

Hi, it’s DIY Dad! Continuing the first-floor bathroom/laundry room renovation u2014 after finishing the wallpaper, it’s time to install the vanity.

Tools and materials: vanity unit, impact driver, utility knife, water pump pliers, thread seal tape.

The back panel and shelf floor of this vanity have no pre-cut holes for supply lines or drain. I need to make those openings myself. First I position the vanity, mark the supply and drain locations, then cut the openings with a utility knife.

With the cutouts done, installation begins. The vanity base goes in first.

I open the cabinet doors and drive screws through the back panel into the wall blocking. Then I wrap thread seal tape around the threaded supply fittings u2014 about five clockwise wraps, keeping it taut. Next, I attach the supply valve handles and water supply nozzles.

Hot and cold supply hoses connected. The drain pipe slides into the drain outlet and the gap is sealed with a rubber gasket.

Drain connection.

Vanity installed. For pricing and specs on this vanity, see the DIY Dad Equipment Guide u2014 Bathroom/Laundry Room Edition. That’s all for today u2014 see you next time!

同じカテゴリの記事を読む

8棟自主管理の経験から書いた関連記事 — まとめて読むと理解が深まります

▸ English

Apt.1 Staircase Repair Vol.2: Finishing

▸ English

Tools & Materials Vol.1: Wallpaper Installation

▸ English

How Depreciation Works for Rental Properties in Japan (Tax Benefits Explained)

▸ English

Wood-Frame (u6728u9020) vs. Reinforced Concrete (RC): Which Is Better for Investors?

▸ English

Refinancing Your Investment Property in Japan: When and How

▸ English

Apt.1 Toilet Vol.6: Silicone Caulking & Finish