Leave Skylight Repair and Replacement in Kunitachi City, Tokyo to Kakeru Koumuten Co., Ltd.!
If you are looking for
skylight contractors in
Kakeru Koumuten
Kakeru Koumuten is a home renovation company that performs
complete in-house construction from temporary scaffolding installation to roofing and skylight work.
We have received numerous requests for skylight repairs and replacements in Kunitachi City, Tokyo.
We will promptly respond to urgent skylight repairs, such as leaks from skylights (top lights), and provide emergency measures.
“About subsidies available for skylight work in Kunitachi City, Tokyo”
“About the costs of skylight repairs and replacements”
“Reasons why Kakeru Koumuten is chosen in Kunitachi City, Tokyo”
and more
For customers living in Kunitachi City, Tokyo, who are considering skylight replacement,
this information will definitely be helpful, so please take a look!
To conclude, the most important thing when considering skylight work is
“multiple estimates”!
Let’s obtain estimates from at least three companies that handle skylight repairs in Kunitachi City, Tokyo!
Reasons why Kakeru Koumuten is chosen for skylight work in Kunitachi City, Tokyo

The reasons why you can trust us with skylight repairs in Kunitachi City, Tokyo,
include the fact that “Kakeru Koumuten 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 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 scaffolding materials for approximately 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, you can purchase materials at a lower cost!
Additionally, we always have stock available, allowing for swift responses 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, separating and recycling waste materials can lead to significant cost reductions in waste disposal fees.
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 heat insulation testing equipment!
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 same person is responsible for sales and construction management, smooth communication is possible.
We can handle everything from temporary scaffolding setup to exterior painting, roofing work, and exterior covering work completely in-house!
Skylight installation involves dismantling or removing roofing materials, so by performing it simultaneously with roof replacement or covering work, you can significantly reduce costs!
3. Various permits obtained and skilled workers on staff
We have obtained construction industry licenses and permits for industrial waste collection and transportation!
We have 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, allowing us to 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 annual notification DM.
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 conduct surveys using 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 sites require various processing and techniques, we regularly provide skill enhancement education to ensure all staff can respond effectively.
Subsidies and Grants That May Be Applicable for Skylight Construction in Kunitachi City, Tokyo
In Kunitachi 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-saving performance standards set by the government, such as ZEH standards. For renovations, it is required to carry out work that improves the energy-saving performance 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 construction, 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 content of the work. In either case, even if multiple works are carried out, the total subsidy cannot exceed this maximum amount.
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 provided based on the content of the 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
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 carried out by registered “window renovation contractors” with the government, and the granted subsidy is fully refunded to the homeowners through discounts on the construction costs.
Requirements
The eligible renovations include the installation of interior windows, replacement of exterior windows, and glass replacement 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 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 is limited 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 skylight repair method!
(Using Velux Products)
(Varies by method)
(Varies by method)
(Varies by method)
(Sealing & Waterproof Tape)
(Varies by method)
(Varies by method)
(Varies by method)
(Varies by method)
(Varies by method)
※Costs and guarantee periods may vary depending on the shape, quantity, condition of the substrate, whether it is a roof overlay or complete 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 comes into the room, it creates a sense of openness, which I believe makes you feel good.
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 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, so airflow also improves.
High privacy
In areas where houses are closely packed together, installing large windows can make the inside of your home visible. 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. After all, since it involves opening up the roof, there is some risk of water leakage.
However, with proper installation and regular maintenance of modern skylights, this risk can be minimized significantly.
Regular maintenance is necessary
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 can be bothersome
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. In particular, the sound can be quite noticeable during heavy rain or storms.
However, this is not something that is strongly felt with all skylights. By choosing double-glazed glass or products with high sound insulation, the noise from rain can be reduced.
Examples of skylight repair work
| 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 |
| Due to cracks in the skylight glass, we received a request to replace the skylight glass along with the roof overlay work. |
Skylight Glass Replacement Work – Construction Procedure
1. Remove the components around 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 be careful to ensure that the glass does not break during installation, just as we were during 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 confirm that the hardware is securely fastened, as not using the appropriate installation method for the skylight can 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 Kunitachi 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.
● 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.
Have Extensive Experience in Skylight Work
Skylight contractors often have websites that showcase their work history.
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 concerned about whether the contractor you are about to hire will respond properly, choose one with extensive repair experience.
It is also effective to look at reviews of skylight contractors on Google and review sites!
If there are many negative reviews or no reviews at all, it may be wise to refrain from hiring them.
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 may lead to leaks after installation or high construction costs, resulting in potential troubles.
Furthermore, 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 made at no cost, providing peace of mind!
Additionally, companies that offer warranty periods are often confident 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 separate from warranties, so be sure to check if the contractor you are considering has warranties andafter-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)
When requesting skylight installation, let’s obtain estimates from multiple contractors.
Even for the same repair or replacement work, the repair costs may vary by contractor, as well as the warranties and after-sales services offered.
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, be sure to look at more than just the cost,
“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 processes are skipped, costs can be reduced, so avoid making decisions based solely on price!
Check if the work is done in-house
There are various construction methods for skylight repair plans, including full replacement, roof overlay (cover method), and partial repairs!
The plan details 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. There are cases where customers who want to keep costs down are suggested to replace the skylight instead of just a partial repair, which can be more expensive.
Additionally, since the contractor needs to investigate and then request a subcontractor, both time and costs can increase unnecessarily.
By having the knowledge and experience to perform the work in-house, we can provide 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, can be delayed.
If you are looking for a skylight replacement contractor in Kunitachi City, Tokyo, please contact Kakeru Koumuten Co., Ltd.
Our company handles many roofing and exterior painting projects in Kunitachi 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 entirely in-house.
We are confident that our costs, quality, and efficiency in exterior work surpass those of other companies!
We welcome competitive estimates!
Exterior Renovation Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
Kunitachi City, Tokyo Area List
Aoyagi, Kunitachi City / Ishida, Kunitachi City / Izumi, Kunitachi City / Kita, Kunitachi City / Naka, Kunitachi City / Nishi, Kunitachi City / Higashi, Kunitachi City / Fujimidai, Kunitachi City / Yagawa, Kunitachi City / Yahō, Kunitachi City
・Trust Kakeru Koumuten Co., Ltd. for exterior wall painting in Kunitachi, Tokyo!
・Trust Kakeru Koumuten Co., Ltd. for roof renovations in Kunitachi, Tokyo!
・Trust Kakeru Koumuten Co., Ltd. for exterior renovations in Kunitachi, 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 getting multiple estimates and points to compare!
・Trust Kakeru Koumuten Co., Ltd. for leak repairs in Kunitachi, Tokyo!
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いちばんの強みは、足場工事、屋根工事、塗装工事とすべて自社で行えること。一般には分業されるこの業界にあって、一式で頼めるので管理に手間がかからず、コストも抑えることが出来ます。何より、トラブルがあればすぐにかけつけます!
自信をもって、宣言できます。私たちは、神奈川で一番若くて親切なリフォーム屋です!




