目次
- 1 If you are looking for skylight construction contractors in Kakeru Koumuten Co., Ltd.
- 2 Reasons why Kakeru Koumuten Co., Ltd. is chosen for skylight construction in Musashino City, Tokyo
- 3 Possible Subsidies and Grants for Skylight Construction in Musashino City, Tokyo
- 4 Skylight Repair and Replacement Price List
- 5 Customer Feedback
- 6 Advantages and Disadvantages of Skylights
- 7 Skylight Repair Case Studies
- 8 Skylight Glass Replacement Work – Construction Procedure
- 9 How to Choose a Skylight Contractor
- 10 If you are looking for a skylight replacement contractor in Musashino City, Tokyo, please contact Kakeru Koumuten Co., Ltd.
If you are looking for
skylight construction contractors in
Kakeru Koumuten Co., Ltd.
Kakeru Koumuten Co., Ltd. is an exterior renovation company that performs
complete in-house construction from temporary site setup to roof work and skylight construction.
We have received numerous requests for skylight repairs and replacements in Musashino City, Tokyo.
We will promptly respond to urgent skylight repairs, such as leaks from skylights (top lights),
and emergency measures.
“About subsidies available for skylight construction in Musashino City, Tokyo”
“About the costs of skylight repairs and replacements”
“Reasons why Kakeru Koumuten Co., Ltd. is chosen in Musashino City, Tokyo”
and more
For customers living in Musashino City, Tokyo, who are considering skylight replacements,
this information will definitely be helpful, so please take a look!
To conclude, the most important thing when considering skylight construction is
“multiple estimates”!
Let’s obtain estimates from at least three companies that handle skylight repairs in Musashino City, Tokyo!
Reasons why Kakeru Koumuten Co., Ltd. is chosen for skylight construction in Musashino City, Tokyo

The reasons why we can be entrusted with skylight repairs in Musashino City, Tokyo,
include the fact that “Kakeru Koumuten Co., Ltd. is a roofing company in Tokyo,”
but also our “unique initiatives in skylight replacement work that cannot be imitated by other companies”
, which have received high praise from many customers.
“costs,” “quality,” and “plans” are our absolute strengths,
1. Equipment Specialized for 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 installations.
We have established five 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 installations, 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 scaffolding materials for approximately 50 single-family homes!
Storage of Materials in Our Large In-House 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 thermal insulation properties using a thermal 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 handle everything from the estimate to project completion.
Since the person in charge does not change, whether it’s sales or construction management, 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 removing roofing materials, doing it simultaneously with roof replacement or cover work can significantly reduce costs!
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 places, we can utilize a drone to assist!
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 measures for sudden leaks from skylights!
6. Human Resource Development
We create various roof models to enhance our skills and conduct practical training.
Since different sites require various processing and techniques, we regularly provide skill enhancement education to ensure all staff can respond effectively.
Possible Subsidies and Grants for Skylight Construction in Musashino City, Tokyo
In Musashino 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 exceeding ZEH standards. For renovations, the work must improve the energy efficiency of the home through insulation upgrades or the introduction of energy-saving equipment. In both cases, it is required to contract with a registered business and complete the work within the specified period.
Maximum Subsidy Amount
For new homes, the maximum subsidy per unit ranges from 400,000 to 1,600,000 yen depending on the performance category of the home, while for renovations, the maximum subsidy per unit ranges from 400,000 to 600,000 yen depending on the work content. 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 amount subsidy” is granted based on the work content and performance category. Therefore, in effect, the government bears part of the construction cost.
For more details, please see here!
Advanced Window Renovation Project
Eligible Participants
Owners of existing homes (single-family homes and apartment buildings) who are carrying out insulation renovation work on windows and openings are eligible. The actual subsidy application process is conducted by registered “window renovation contractors” with the government, and the granted subsidies are fully refunded to the homeowners through discounts on construction costs.
Requirements
Eligible works include window renovation aimed at improving insulation performance, such as installing interior windows, replacing exterior windows, and replacing glass 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 the work must start 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 cost. 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 cost.
For more details, please click here!
Skylight Repair and Replacement Price List
This is the warranty and cost for each skylight repair method!
| Renovation & Repair Methods | Warranty | Cost |
| Skylight Replacement & Cover (Using products from Velux Japan) |
Manufacturer Warranty Up to 20 Years | Approximately 250,000 yen~ (Varies by method) |
| Skylight Glass Replacement | Construction Warranty 3 Years~ (Varies by method) |
Approximately 60,000 yen~ (Varies by method) |
| Skylight Leak Repair (Sealing & Waterproof Tape) |
None | Approximately 10,000 yen~ (Varies by method) |
| Skylight Metal Replacement | Construction Guarantee: 3 years and up (Varies by method) |
Approximately 60,000 yen and up (Varies by method) |
| Skylight Removal | Construction Guarantee: 3 years and up (Varies by method) |
Approximately 60,000 yen and up (Varies by method) |
※Costs and guarantee periods vary depending on the shape, quantity, condition of the substrate, whether it is a roof overlay or replacement work, 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 good.
Energy Savings

This also contributes to high light transmission, allowing you to save on electricity bills due to the presence of natural light. It reduces the need to turn on electric lights during the day, making it energy-efficient.
Good Ventilation

By installing a skylight, you can open and close it, improving ventilation.
Warm air rises, enhancing airflow as well.
High Privacy

In areas with closely built houses, large windows can expose the interior of your home. However, with skylights, since they are installed on the roof, your 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 up the roof for installation, there is a certain risk of leaks.
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 do it regularly to avoid damage to the interior and wooden parts caused by leaks.
Noise from Rain

Since skylights are installed directly on the roof, the sound of raindrops hitting the glass can easily be transmitted indoors. This can be particularly noticeable during heavy rain or storms.
However, this is not strongly felt with all skylights. By choosing double-glazed glass or products with high sound insulation, the sound of rain can be reduced.
Skylight Repair Case Studies
| 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 Work |
| Cracks had developed in the skylight glass, so we received a request to replace the skylight glass in conjunction with the roof overlay work. |
Skylight Glass Replacement Work – Construction Procedure
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. We will carefully install it to avoid breaking, just as we did during the removal.
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 method used is appropriate for 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 Musashino City, and it can be confusing to decide which one to choose.
Therefore, when requesting skylight replacement work or leak repairs, it is important to check the following 5 points.
● They have extensive experience in skylight work
● Confirm if they can also handle roofing work
● Check for warranties and aftercare services
● Obtain estimates from multiple contractors (at least 3)
● Confirm if they perform roof renovations in-house
By confirming the above 5 points, you will be able to choose a reliable contractor.
They have extensive experience in skylight work
Skylight contractors often have websites that showcase their work experience.
Additionally, if they provide detailed explanations of repair work with photos, it can give you peace of mind as a reference when you request repairs.
If you are unsure whether the contractor you are considering will handle your request properly, choose one with abundant repair experience.
It can also be effective to refer to reviews on Google or 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 making a request.
Kakeru Koumuten Co., Ltd. specializes in exterior work, so we receive many requests for skylight replacement work.
Confirm if they can handle roofing work
Since skylights are installed on roofs, 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 high construction costs, resulting in 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, let’s confirm the availability of 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 demonstrate confidence in their work, which can serve as a criterion for selecting a contractor!
The warranty period varies by contractor and the nature of the work, but it is generally set between 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.
We provide free support for simple repairs such as partial sealing.
Obtain estimates from multiple contractors (at least 3)
When requesting skylight installation, be sure to obtain estimates from multiple contractors.
Even for the same repair or replacement work, the repair costs and warranties or after-sales services may vary between contractors.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at a lower price, obtaining estimates from multiple contractors is essential.
When comparing estimates, consider not only the cost but also
“Items in the estimate”
“Materials and quality of glass, etc.”
“Confirmation 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 content of the plan will vary 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 work.
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, requesting a subcontractor after an investigation can incur extra time and costs.
By having the knowledge and experience to perform the work in-house, we can provide responsible construction while keeping costs down.
Moreover, contractors that outsource work may have delayed responses during emergencies or issues after construction, which is one of the disadvantages.
If you are looking for a skylight replacement contractor in Musashino City, Tokyo, please contact Kakeru Koumuten Co., Ltd.
Our company handles many roofing and exterior painting projects in Musashino 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, we can also provide emergency measures without scaffolding, so please feel free to consult with us!
For specific requests such as “I want it to last long with one renovation”, “I want to keep costs down as much as possible”, “I want to improve insulation because the indoors are hot”, we will provide the best solutions.
We carry out everything from temporary scaffolding work 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 work!
We welcome competitive estimates with confidence!
Exterior Renovation Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
Musashino City, Tokyo Area List
Kichijoji Honcho, Musashino City / Kichijoji Higashimachi, Musashino City / Kichijoji Minamimachi, Musashino City / Kichijoji Kitamachi, Musashino City / Sakaiminami, Musashino City / Gotenyama, Musashino City / Sakae, Musashino City / Sakuradai, Musashino City / Sekimae, Musashino City / Nakacho, Musashino City / Nishikubo, Musashino City / Midorimachi, Musashino City / Yahatacho, Musashino City
・Trust Kakeru Koumuten Co., Ltd. for exterior wall painting in Musashino, Tokyo!
・Trust Kakeru Koumuten Co., Ltd. for roof renovations in Musashino, Tokyo!
・Trust Kakeru Koumuten Co., Ltd. for exterior renovations in Musashino, 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
・Explaining the importance of comparative estimates and points to consider!
・Trust Kakeru Koumuten Co., Ltd. for leak repairs in Musashino, 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!




