目次
- 1 If you are looking for a skylight contractor in Kakeru Koumuten
- 2 Reasons why Kakeru Koumuten is chosen for skylight work in Aoba-ku, Yokohama
- 3 Possible subsidies and grants for skylight construction in Tachikawa City, Tokyo
- 4 Skylight Repair and Replacement Price List
- 5 Customer Feedback
- 6 Advantages and Disadvantages of Skylights
- 7 Examples of Skylight Repairs
- 8 Skylight Glass Replacement Work – Construction Steps
- 9 How to Choose a Skylight Contractor
- 10 If you are looking for a skylight replacement contractor in Tachikawa City, Tokyo, please contact Kakeru Koumuten Co., Ltd.
If you are looking for a
skylight contractor in
Kakeru Koumuten
Kakeru Koumuten is an exterior renovation company that performs
complete in-house construction from temporary scaffolding installation to roof work and skylight installation.
We have received numerous requests for skylight repairs and replacements in Aoba-ku, Yokohama.
In case of emergencies such as leaks from skylights (top lights), we will respond quickly for repairs and
temporary measures.
“About subsidies available for skylight work in Aoba-ku, Yokohama”
“About the costs of skylight repairs and replacements”
“Reasons why Kakeru Koumuten is chosen in Aoba-ku, Yokohama”
and more
For customers living in Aoba-ku, Yokohama who are considering skylight replacement,
this will definitely be helpful, so please take a look!
To conclude, the most important thing when considering skylight work is
“multiple estimates”!
Let’s get at least three estimates from skylight repair contractors covering Aoba-ku, Yokohama!
Reasons why Kakeru Koumuten is chosen for skylight work in Aoba-ku, Yokohama

The reasons why we can be entrusted with skylight repairs in Aoba-ku, Yokohama
include the fact that “Kakeru Koumuten is a roofing company in Tokyo,”
and our unique approach to skylight replacement work that cannot be imitated by other companies,
which has received high praise from many customers.
“cost,” “quality,” and “plans” are our absolute strengths,
1. Facilities Specialized in Exterior Renovation
Kakeru Koumuten Co., Ltd. has prepared the following warehouses and material storage areas to provide low-cost, high-quality exterior renovations such as skylight installation.
We have established 5 bases centered around Yokohama City for material storage and showrooms.
In-house Scaffolding Materials
We own the scaffolding materials necessary for temporary scaffolding required for skylight installation, allowing us to assemble scaffolding in-house.
By performing scaffolding work with our own scaffolding team instead of outsourcing, we can cut costs on scaffolding work and respond quickly in emergencies.
We have approximately enough scaffolding materials for 50 single-family homes!
Storage of Materials in Our Large Warehouse
We store materials used for exterior renovations.
By ordering a large quantity of materials at once, we canprocure materials at a lower cost!
Additionally, we always have stock available, allowing us torespond quickly in emergencies!
In-house Waste Separation
During skylight construction, various waste materials such as roofing materials, glass, and wood are generated.
While most contractors dispose of them all together, by separating and recycling waste materials, we can significantly cut down on waste disposal costs.
Showroom Dedicated to Exterior Renovations
In our showroom, not only can you have meetings, but you can also
directly check the actual roofing materials and colors.
You can also perform color simulations for exterior painting and check heat insulation properties using a heat insulation testing machine!
2. Complete in-house construction for skylight installation
One of Kakeru Koumuten’s major strengths is our complete in-house construction.
From inquiries to project completion, everything is handled by Kakeru Koumuten in a consistent manner, allowing us to keep costs down while providing high-quality skylight installations.
Additionally, one representative will assist you from the estimate to the completion of the project.
Since the person in charge does not change, whether it’s the sales representative or the construction management representative, smooth communication is possible.
We can handle everything from the installation of temporary scaffolding to exterior painting, roofing work, and exterior cover work completely in-house!
Since skylight installation involves dismantling or peeling off roofing materials, it can be significantly more cost-effective when done simultaneously with roof replacement or cover work!
3. Various permits obtained and skilled workers on staff
We have obtained permits for construction work and industrial waste collection and transportation!
We have nationally certified sheet metal workers and painting technicians on staff, and we are confident in our construction techniques.
We are also capable of handling large-scale roofing projects such as those for factories!
We have qualified asbestos supervisors and asbestos surveyors on staff, so we can handle asbestos-containing roofing materials and conduct preliminary surveys.
4. Warranty and Aftercare

The skylight replacement work comes with a warranty!
Aftercare is available every year, and we send out notification DM each year.
5. Flexible and Prompt Response
Our company is equipped to handle various troubles and situations related to skylights.
Even if you cannot access the roof at high altitudes, we can respond using a drone!
During leak investigations, we can also use a thermal imaging camera, which helps in identifying the cause of leaks!
We will respond according to your wishes.
We also accept emergency repairs for sudden leaks from skylights!
6. Human Resource Development
We are creating various roof models to improve our skills and conducting practical training.
Since different processing and techniques are required depending on the site, we regularly provide skill enhancement education so that each staff member can respond effectively.
Possible subsidies and grants for skylight construction in Tachikawa City, Tokyo
In Tachikawa City, Tokyo, there are potential subsidies available when carrying out skylight construction!
For details, please contact our company or your local government!
Child-rearing Green Housing Support Project
Eligible Participants
Households with children (households with children under 18) and young couples are eligible for new construction or purchase of energy-efficient homes, or energy-saving renovations of existing homes. For new construction, the builder or purchaser is eligible, while for renovations, the contractor ordering the work is eligible for the subsidy.
Requirements
For new homes, it is necessary to meet high energy efficiency standards set by the government, such as ZEH standards. For renovations, it is required to carry out work that improves the energy efficiency of the home, such as insulation upgrades or the introduction of energy-saving equipment. In both cases, it is necessary to contract with a registered business and complete the work within the specified period.
Maximum Subsidy Amount
For new homes, the maximum subsidy amount ranges from 400,000 yen to 1,600,000 yen per unit, depending on the performance classification of the home. For renovations, the maximum subsidy amount ranges from 400,000 yen to 600,000 yen per unit, depending on the scope of work. In either case, even if multiple works are carried out, the total subsidy cannot exceed these maximum amounts.
Subsidy Rate
This project does not provide a subsidy based on a certain percentage of the construction cost; instead, a predetermined “fixed subsidy” is provided based on the scope of work and performance classification. Therefore, in effect, the government covers part of the construction cost.
For more details, please see here!
Advanced Window Renovation Project
Eligible Participants
Homeowners and others who carry out insulation renovation work on windows and openings in existing homes (single-family homes and apartment buildings) are eligible. The actual subsidy application process is carried out by registered “window renovation contractors” with the government, and the granted subsidies are fully refunded to the homeowners through discounts on construction costs.
Requirements
The eligible renovations include the installation of interior windows, replacement of exterior windows, and glass replacements aimed at improving insulation performance in existing homes. It is necessary to use products that meet the insulation performance standards set by the government and to enter into a construction contract with a registered window renovation contractor. Additionally, the total subsidy amount must be 50,000 yen or more, and work must commence and be completed within the specified construction period.
Maximum Subsidy Amount
The maximum subsidy is 2 million yen per household. Even if multiple windows are renovated, the total subsidy that can be received for the same residence will be up to this maximum amount.
Subsidy Rate
The subsidy rate is approximately equivalent to half of the construction costs. The actual subsidy amount is set at a fixed rate based on the type of window (inner window, outer window, glass), size, and insulation performance category, resulting in a total that is approximately 50% of the construction costs.
For more details, please click here!
Skylight Repair and Replacement Price List
This is the warranty and cost for each method of skylight repair!
(工法により異なります)
(工法により異なります)
(工法により異なります)
(工法により異なります)
(Varies by method)
(Varies by method)
(Varies by method)
(Varies by method)
※Costs and warranty periods vary depending on the shape, quantity, condition of the base, whether it is related to roof overlay work or complete roof replacement, type of existing roofing material, and type of materials used.
If you would like a detailed estimate, please feel free to contact us!
Estimates are completely free of charge.
For information on the costs of Kakeru Koumuten’s skylight repair and replacement plans, click here!
Customer Feedback
Advantages and Disadvantages of Skylights
Advantages of Skylights
High Light Transmission
First, the advantage of skylights is their high light transmission.
When natural light enters the room abundantly, it creates a sense of openness, making you feel more comfortable.
Energy Savings
This also contributes to high light transmission, as the presence of natural light allows you to save on electricity costs. Since you will reduce the need to turn on electric lights during the day, it is suitable for energy conservation.
Good Ventilation

By installing a skylight, you can open and close it, which improves ventilation.
Warm air rises, enhancing airflow as well.
High Privacy
In areas where houses are closely packed together, installing large windows can make the interior visible. In such cases, skylights are installed on the roof, ensuring privacy is maintained.
Disadvantages of Skylights
Risk of Leaks
The biggest concern when installing a skylight is the risk of leaks. Since it involves opening the roof for installation, there is always some risk of water leakage.
However, with proper installation and regular maintenance, the risk can be minimized significantly.
Regular Maintenance Required
Skylights need maintenance every 5 to 10 years to prevent leaks. While maintenance may seem troublesome, it is recommended to perform it regularly to avoid damage to the interior and wooden structures caused by leaks.
Noise from Rain
Since skylights are installed directly on the roof, the sound of raindrops hitting the glass surface can easily be transmitted indoors, which is a disadvantage. This sound can be particularly noticeable during heavy rain or storms.
However, this is not a strong issue with all skylights. By choosing double-glazed glass or products with high sound insulation, the noise from rain can be reduced.
Examples of Skylight Repairs
| Construction Details |
| Skylight Glass Replacement Work |
| New Materials Used |
| Double Glazing |
| Price Range |
| 50,000 – 100,000 yen |
| Construction Period |
| 1 day |
| Background to the Construction |
| Cracks had developed in the skylight glass, so we received a request to replace the skylight glass along with the roof overlay work. |
Skylight Glass Replacement Work – Construction Steps
1. Remove the surrounding materials of the skylight
First, we will remove the cover materials and securing materials around the skylight. These materials will be reused, so we will take them off carefully.
2. Protection
We will protect the area around the skylight indoors.
This is to ensure that no debris falls inside.
3. Removal of Existing Glass
Next, after removing the cover materials, we will take out the existing glass.
4. Installation of New Glass
Once the existing glass is removed, we will install the new glass. Just like during removal, we will be careful to avoid breaking the glass during installation.
5. Waterproofing Treatment
When replacing the skylight glass, waterproofing treatment may be necessary.
We will perform waterproofing around the glass using butyl tape and other materials.
6. Restoration of Materials and Sealing
We will reattach the covers and fasteners that held the glass in place.
It is important to ensure that the installation method matches the type of skylight being used, as improper installation could lead to leaks.
We will perform waterproofing treatment around the frame with sealing.
How to Choose a Skylight Contractor
There are many skylight contractors in Tachikawa City, and you may be unsure which one to choose.
Therefore, when requesting skylight replacement work or leak repairs, please check the following 5 points.
● Extensive experience in skylight work
● Confirm whether they can also handle roofing work
● Check for warranties and aftercare services
● Obtain estimates from multiple contractors (at least 3 companies)
● Confirm whether they perform roof renovations in-house
By checking these 5 points, you will be able to choose a reliable contractor.
Extensive Experience in Skylight Work
Skylight contractors often have websites showcasing their work experience.
Additionally, if they provide detailed explanations of repair work with photos, it can give you peace of mind when you decide to request repairs.
If you are concerned about whether the contractor you are considering will respond adequately, choose one with extensive repair experience.
It can also be effective to refer to reviews on Google and review sites when looking for skylight contractors!
If there are many negative reviews or no reviews at all, it may be wise to refrain from requesting their services.
Kakeru Koumuten Co., Ltd. specializes in exterior work, so we receive many requests for skylight replacement work.
Confirm Whether They Can Handle Roofing Work
Since skylights are installed on the roof, roofing work is often involved as well.
If the contractor lacks knowledge about roofs or cannot handle roofing work, it could lead to leaks after installation or result in high construction costs, leading to potential troubles.
Moreover, since skylight replacement or removal may require partial dismantling of the roof and restoration, performing roof overlay work or re-roofing simultaneously can significantly reduce costs!
Our company specializes in roofing work, so we can propose the optimal plan tailored to your needs for roofing work associated with skylight installation.
Check for warranties and after-sales maintenance
When choosing a skylight contractor, make sure to check for warranties.
If a leak occurs after the skylight installation, having a leak warranty from the contractor ensures that repairs can be done free of charge, providing peace of mind!
Additionally, companies that offer a warranty are often confident in their work, which can serve as a criterion for selecting a contractor!
Warranty periods vary by contractor and the nature of the work, but typically range from 1 to 10 years.
Emergency repairs or partial fixes often do not come with a leak warranty.
Moreover, some contractors offer after-sales services in addition to warranties, so be sure to check if the contractor you are considering has warranties and after-sales services.
Kakeru Koumuten Co., Ltd. sends out annual DM for after-sales maintenance, allowing for yearly inspections.
For simple repairs like partial sealing, we provide services free of charge.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting skylight work, get estimates from multiple contractors.
Even for the same repair or replacement work, costs can vary between contractors, as can warranties and after-sales services.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired contractor at a lower price, it is essential to obtain estimates from multiple companies.
When comparing estimates, consider not just the costs, but also
“Items in the estimate”
“Materials and quality of glass”
“Verification of the process”
and make a detailed comparison! If the quality of auxiliary materials is low or if steps are skipped, costs can be reduced, so avoid making decisions based solely on price!
Check if the contractor performs the work in-house
There are various construction methods for skylight repair plans, including full replacement, roof overlay (cover method), and partial repairs!
The plan details may change depending on the actual state of deterioration and the customer’s preferences.
If you choose a contractor that completely outsources skylight repair work, they may lack knowledge and experience, leading to proposals for repairs in the wrong areas or unnecessary construction.
Customers who want to keep costs down may be suggested to replace the skylight, which can be expensive, even when partial repairs would suffice.
Additionally, since they need to investigate and then request a subcontractor, both time and costs can increase unnecessarily.
By having knowledge and experience and performing the work in-house, we can offer responsible construction while keeping costs down.
Moreover, with contractors that outsource work, one of the disadvantages is that their response to emergencies, such as post-construction troubles, tends to be slow.
If you are looking for a skylight replacement contractor in Tachikawa City, Tokyo, please contact Kakeru Koumuten Co., Ltd.
Our company handles many roofing and exterior painting projects in Tachikawa City, Tokyo. We are happy to assist with skylight replacements, roof overlays, roof re-roofing, exterior painting, exterior cladding, leak repairs, and other partial roof repairs!
In urgent cases like leak repairs or when emergency measures can be taken without scaffolding, please feel free to consult us!
We provide optimal solutions for specific requests such as “I want it to last long with one renovation”, “I want to keep costs down as much as possible”, and “I want to improve insulation performance because the indoors are hot”.
We perform everything from temporary scaffolding construction to roofing and exterior painting completely in-house.
We are confident that we will not be outdone in terms of cost, quality, and efficiency compared to other companies in exterior construction!
We welcome competitive estimates with confidence!
Exterior Renovation Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
Tachikawa City, Tokyo Area List
Akechi-cho, Tachikawa City / Izumi-cho, Tachikawa City / Ichiban-cho, Tachikawa City / Kashiwamachi, Tachikawa City / Kamisuna-cho, Tachikawa City / Saiwai-cho, Tachikawa City / Sakae-cho, Tachikawa City / Shibasaki-cho, Tachikawa City / Sunagawa-cho, Tachikawa City / Takamatsu-cho, Tachikawa City / Nishisuna-cho, Tachikawa City / Hagoromo-cho, Tachikawa City / Fujimi-cho, Tachikawa City / Midori-cho, Tachikawa City / Wakaba-cho, Tachikawa City
・Trust Kakeru Koumuten Co., Ltd. for exterior wall painting in Tachikawa, Tokyo!
・Trust Kakeru Koumuten Co., Ltd. for roof renovations in Tachikawa, Tokyo!
・Trust Kakeru Koumuten Co., Ltd. for exterior renovations in Tachikawa, Tokyo!
・Kakeru Koumuten Co., Ltd. Project Achievements
・Kakeru Koumuten Co., Ltd. Aftercare Services
・Kakeru Koumuten Co., Ltd. Service Menu and Price List
・Kakeru Koumuten Co., Ltd. Staff Blog and Announcements
・We explain the importance of getting multiple estimates and points to compare!
・Trust Kakeru Koumuten Co., Ltd. for leak repairs in Tachikawa, Tokyo!
We welcome consultations via LINE◎
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!




