
This is a case study of an interior renovation in Aoba Ward, Yokohama City, not an exterior renovation.
Kakeru Koumuten Co., Ltd. also handles interior painting and interior work!
In this case, the customer
replaced the bathroom and re-laid the flooring!
目次
- 1 Interior Work Procedure in Aoba Ward, Yokohama City
- 2 Guidelines for Interior Renovation
- 2.0.1 1. Wallpaper (Cross) Renovation
- 2.0.2 2. Flooring Renovation
- 2.0.3 3. Toilet Renovation
- 2.0.4 4. Kitchen and Bathroom Renovation
- 2.0.5 5. Lighting and Outlet Renovation
- 2.0.6 6. Door and Window Renovation
- 2.0.7 7. Air Conditioning Equipment (Air Conditioner and Heating) Renovation
- 2.0.8 8. Overall Renovation (Updating Entire Interior)
- 2.1 Points to Consider When Deciding on Renovation Timing
- 3 Leave Your Interior Renovation in Aoba Ward, Yokohama City to Kakeru Koumuten Co., Ltd.!
Interior Work Procedure in Aoba Ward, Yokohama City
Bathroom Replacement Work
1. Demolition of Existing Bathroom
2. Preliminary Plumbing
3. Installation of Insulation Material
4. Installation of New Bathroom
There are five main steps in assembling the new unit bath.
① Assembly of the floor, bathtub, walls, ceiling, and entrance door
② Connection of water supply, drainage, hot water supply, and reheating
③ Connection of ventilation fans and lighting
④ Installation of the bathroom entrance frame
⑤ Trial operation and leak check
※ When replacing the bathroom entrance frame, the wallpaper in the washroom may also be affected, so
there is a possibility that the wallpaper in the washroom will also be replaced in the same work.
Bathroom Replacement Before
Bathroom Replacement After
Traditional Method
This is an old-fashioned tiled bath. Since it is built on-site, it can be prone to leaks as it ages.
Unit Bath
This is a bath made by assembling factory-made floor, walls, and bathtub on-site. It is less prone to leaks and easier to clean.
Floor Replacement Work
Western Room ① Before
Western Room ① After
・The durability of carpet is approximately 7 to 10 years.
・The durability of flooring is approximately 10 to 20 years.
Western Room ② Before
Western Room ② After

The durability of flooring is approximately 10 to 20 years.
☞ As the durability period passes, the flooring may start to warp or show dirt more prominently.
Kitchen Before
Kitchen After
The durability of cushion floor (CF) is approximately 8 to 10 years.
☞ As the durability period passes, the cushion floor may start to peel or show dirt more prominently.
Materials Used
| Materials Used |
Bathroom Flooring Material |
|---|
Guidelines for Interior Renovation
1. Wallpaper (Cross) Renovation
- 10 to 15 years
Wallpaper deteriorates depending on usage frequency and environment, so it is advisable to consider replacement every 10 to 15 years. Especially in humid areas like kitchens and bathrooms, or in places with strong sunlight, fading, dirt, and mold can develop more quickly.
2. Flooring Renovation
- 10 to 15 years
Flooring tends to show wear and scratches, so it is good to consider renovation every 10 to 15 years. Particularly in households that frequently move heavy furniture or have pets, wear can progress more quickly. It is important to not only repair the surface of the flooring but also check the condition underneath and renovate as necessary.
3. Toilet Renovation
- 10 to 15 years
Toilets generally have a replacement guideline of about 10 years.
4. Kitchen and Bathroom Renovation
- 10 to 20 years
Kitchens and bathrooms are used frequently, so their equipment can become outdated or deteriorate. Especially, sinks, stoves, and bathtubs can deteriorate quickly, so it is advisable to consider renovation every 10 to 20 years. Additionally, replacing with the latest equipment can improve usability and energy efficiency.
5. Lighting and Outlet Renovation
- 10 to 20 years
Replacing lighting fixtures and outlets is typically done when they look old or their functionality declines. Incorporating the latest LED lighting and smart features can enhance convenience and energy efficiency.
6. Door and Window Renovation
- 15 to 20 years
Door and window renovations are considered when there are difficulties in opening and closing or when insulation performance declines. Particularly, replacing insulation materials or double windows can significantly improve energy efficiency.
7. Air Conditioning Equipment (Air Conditioner and Heating) Renovation
- 10 to 15 years
Air conditioning and heating equipment may experience a decline in performance after about 10 years, so it is recommended to replace or maintain them every 10 to 15 years. Especially, air conditioners tend to accumulate dirt in filters and interiors, leading to reduced efficiency.
8. Overall Renovation (Updating Entire Interior)
- 20 to 30 years
Renovating the entire interior of the house (walls, flooring, ceilings, equipment, etc.) is typically done every 20 to 30 years.
Points to Consider When Deciding on Renovation Timing
Changes in Lifestyle
It is good to create opportunities to review the interior according to changes in family structure or work and hobbies.
Equipment or Functionality Issues
For example, if heating and cooling are not effective, or if the usability of the kitchen or bathroom has declined, these are signs that it may be time for renovation.
Aesthetics and Comfort
If dirt, scratches, or fading become noticeable, or if the interior feels outdated, it is a good time to consider renovation.
Leave Your Interior Renovation in Aoba Ward, Yokohama City to Kakeru Koumuten Co., Ltd.!
Our company is based in Yokohama City, Kanagawa Prefecture, and we also receive requests for interior renovations in Aoba Ward, Yokohama City.
While we specialize in exterior renovations, we also have extensive experience in interior renovations.
If you have any concerns or questions such as “I just want to know the estimate for renovation” or “I want to at least make it look nice since it has aged”, please feel free to contact us!
Summary
These are the case studies of interior renovations in Aoba Ward, Yokohama City.
Our company primarily handles exterior renovations such as roofing work, but we also frequently respond to interior renovations and repair work due to water leakage damage.
Additionally, repair work for interior damage caused by water leakage may be covered by fire insurance if you are enrolled in a fire insurance policy.
Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exterior walls, or exterior structures, please consult Kakeru Koumuten Co., Ltd. in Aoba Ward, Yokohama City!
We are also happy to assist with interior matters! Since our main work is exterior renovation, it may require consultation, but we hope to be of help if you are in need!!
Kakeru Koumuten Co., Ltd. conducts everything from temporary scaffolding work to roofing and exterior painting work completely in-house.
We are confident that we do not fall short in terms of “cost, quality, and efficiency” compared to other companies!
Since we are confident, we also welcome competitive estimates!
We offer comprehensive construction guarantees and aftercare, and we have received positive feedback for our appropriate proposals that match our customers’ future life plans and cost performance!
“I’m glad I asked them!” We take every request seriously to ensure you feel this way.
We also have information on roofing costs and pricing plans for roof overlay (cover method), so please take a look if you are interested!
We look forward to your inquiries. Thank you very much.
・【Asao Ward, Kawasaki City】|Interior Renovation|This is a case study of interior wooden frame painting work!
・【Aoba Ward, Yokohama City】|Interior Renovation|This is a case study of wallpaper replacement and flooring replacement!
・【Fujisawa City, Kanagawa Prefecture】|Roof Ridge Tile Plaster|This is a case study of leak prevention work through re-plastering of tile roofs!
・【Fujisawa City, Kanagawa Prefecture】|This is a case study of leak prevention work using the roof overlay (cover method)!
・Painting DIY Plan! A must-see for those who want to try painting roofs and exterior walls themselves! We will only set up the scaffolding!
・What is the cost range for roof renovations? Types of work and how to choose a contractor!
・Latest! Grants and subsidies available for renovations, and reduction systems!
・How much does it cost to fix the roof? We will introduce the cost range!
・What is Kasagi? We will explain the role and repair methods of Kasagi in detail!
・Renovation store in Yokohama City, Kanagawa Prefecture | What is roof overlay (cover method)?
・Exterior wall cleaning construction plan without the need for temporary scaffolding!
Useful information about exterior renovations can be found here!
LINE consultations are also very welcome◎
AAA is a young company with an average age in the early 20s, but our technology is second to none.
One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!
We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!





