Leave Skylight Repair and Replacement in Itabashi-ku, Tokyo to Kakeru Koumuten Co., Ltd.!
If you are looking for
skylight contractors in
Kakeru Koumuten
Kakeru Koumuten is a company that handles
everything from temporary scaffolding installation to
roof work and skylight installation with complete in-house construction.
We have received numerous requests for skylight repairs and replacements in Itabashi-ku, Tokyo.
We will promptly respond to urgent skylight repairs, such as leaks from skylights (top lights),
and emergency measures.
“About subsidies available for skylight work in Itabashi-ku, Tokyo”
“About the costs of skylight repairs and replacements”
“Reasons why Kakeru Koumuten is chosen in Itabashi-ku, Tokyo” and more
For customers living in Itabashi-ku, Tokyo, who are considering skylight replacements,
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 obtain at least three estimates from skylight repair contractors covering Itabashi-ku, Tokyo!
Reasons why Kakeru Koumuten is chosen for skylight work in Itabashi-ku, Tokyo

The reasons why you can trust us with skylight repairs in Itabashi-ku, Tokyo
include the fact that “Kakeru Koumuten is a roofing company in Tokyo,”
but also “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. 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 five bases 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 set up 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, we can purchase materials at a lower cost!
Additionally, we always have stock available, allowing us to respond 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, we can significantly cut waste disposal costs by separating and recycling the waste materials.
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 handle everything from the estimate to project completion.
Since the same person is in charge, whether it’s sales or construction management, smooth communication is possible.
We can handle everything from temporary scaffolding setup 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 construction industry licenses and industrial waste collection and transportation permits!
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 pre-investigations.
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 conduct inspections 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 that each staff member can respond effectively.
Possible subsidies and grants for skylight construction in Itabashi-ku, Tokyo
In Itabashi-ku, Tokyo, there are potential subsidies available when undertaking 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 buyer is eligible, and for renovations, the contractor who orders 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 levels. 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 construction, the maximum subsidy per unit ranges from 400,000 yen to 1,600,000 yen, depending on the performance classification of the home. For renovations, the maximum subsidy per unit ranges from 400,000 yen to 600,000 yen, depending on the content of the 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 granted based on the content of the work and performance classification. 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 undertaking 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 subsidies are fully refunded to the homeowners through discounts on construction costs.
Requirements
The eligible works include window renovation projects 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 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 received for the same residence will be 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 method of skylight repair!
(工法によりことなります)
(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 guarantee periods vary depending on the shape, quantity, condition of the substrate, whether it involves roof overlay work 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 enters the room, it creates a sense of openness, making you feel more comfortable.
Energy Savings

This is related to their high light transmission, as natural light allows you to save on electricity costs. Since you will use less electric light during the day, skylights are great for energy conservation.
Good Ventilation

By installing a skylight, you can open and close it, improving ventilation.
Warm air rises, which enhances airflow.
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, 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 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 Glazed Glass |
| Price Range |
| 50,000 – 100,000 yen |
| Construction Period |
| 1 Day |
| Background to the Construction |
| 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 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.
We will take measures to ensure that no debris falls indoors.
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 glass of the skylight, 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 were holding 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 check that the fasteners are securely in place.
Waterproofing treatment will be done around the frame with sealing.
How to Choose a Skylight Contractor
There are many skylight contractors in Tokyo, and it can be confusing to decide which one to choose.
Therefore, when requesting skylight replacement work or leak repairs, let’s check the following 5 points.
● 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 companies)
● Confirm if they perform roof renovations in-house
By confirming the above 5 points, you will be able to choose a reliable contractor.
Extensive Experience in Skylight Work
Skylight contractors often have websites where they 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 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.
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 or restoration of the roof, performing roof overlay work or re-roofing simultaneously can significantly reduce costs!
Our company specializes in roofing work, so we will 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!
Warranty periods vary by contractor and the nature of the work, but it is common to have a 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.
We also provide simple repairs, such as partial sealing, at no charge.
Obtain estimates from multiple contractors (at least 3 companies)
When requesting skylight work, be sure to obtain estimates from multiple contractors.
Even for the same repair or replacement work, costs can vary between contractors, as well as warranties and after-sales services.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired contractor at a lower price, obtaining estimates from multiple contractors is essential.
When comparing estimates, consider not only the costs, but also
“Items in the estimate”
“Materials and quality, such as glass”
“Confirmation of the process”
and make a detailed comparison! If the quality of the auxiliary materials is low or if processes are skipped, costs can be reduced, so avoid making decisions based solely on price!
Confirm whether 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 subcontracts 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 proposed skylight replacements that incur higher expenses, even though partial repairs would suffice.
Additionally, since they investigate and then request subcontractors, it can lead to extra time and costs.
By having knowledge and experience and performing the work in-house, we can provide responsible construction while keeping costs down.
Moreover, with contractors that subcontract completely, 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 Itabashi-ku, Tokyo, please contact Kakeru Koumuten Co., Ltd.
Our company handles many roofing and exterior painting projects in Itabashi-ku, Tokyo. We are happy to assist with skylight replacements, roof overlays, roof re-roofing, exterior painting, exterior cladding, rain leak repairs, and other partial roof repairs!
In urgent cases like rain leak repairs or when emergency measures can be taken without scaffolding, 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 as low 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 construction to roofing and exterior painting completely in-house.
We are confident that our costs, quality, and organization for exterior work are unmatched compared to other companies!
We welcome competitive estimates!
Exterior Renovation Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
Itabashi-ku, Tokyo Area List
Aioicho, Itabashi-ku, Tokyo / Akatsuka, Itabashi-ku, Tokyo / Akatsuka Shinmachi, Itabashi-ku, Tokyo / Azusazawa, Itabashi-ku, Tokyo / Izumicho, Itabashi-ku, Tokyo / Itabashi, Itabashi-ku, Tokyo / Inaridai, Itabashi-ku, Tokyo / Ohara-cho, Itabashi-ku, Tokyo / Otaniguchi, Itabashi-ku, Tokyo / Otaniguchi Kamimachi, Itabashi-ku, Tokyo / Otaniguchi Kitamachi, Itabashi-ku, Tokyo / Oyamakanai-cho, Itabashi-ku, Tokyo / Oyamahigashi-cho, Itabashi-ku, Tokyo / Oyamanishi-cho, Itabashi-ku, Tokyo / Oyamacho, Itabashi-ku, Tokyo / Kaga, Itabashi-ku, Tokyo / Kamitabashi, Itabashi-ku, Tokyo / Kumano-cho, Itabashi-ku, Tokyo / Komokone, Itabashi-ku, Tokyo / Saiwaicho, Itabashi-ku, Tokyo / Eitamachi, Itabashi-ku, Tokyo / Sakashita, Itabashi-ku, Tokyo / Sakuragawa, Itabashi-ku, Tokyo / Shimizucho, Itabashi-ku, Tokyo / Shimura, Itabashi-ku, Tokyo / Shinkawagishi, Itabashi-ku, Tokyo / Daimon, Itabashi-ku, Tokyo / Takashimadaira, Itabashi-ku, Tokyo / Higashishinmachi, Itabashi-ku, Tokyo / Tokiwadai, Itabashi-ku, Tokyo / Tokumaru, Itabashi-ku, Tokyo / Nakaitabashi, Itabashi-ku, Tokyo / Nakajuku, Itabashi-ku, Tokyo / Nakadai, Itabashi-ku, Tokyo / Nakacho, Itabashi-ku, Tokyo / Nakamaru-cho, Itabashi-ku, Tokyo / Narimasu, Itabashi-ku, Tokyo / Nishidai, Itabashi-ku, Tokyo / Hasunecho, Itabashi-ku, Tokyo / Hasune, Itabashi-ku, Tokyo / Hikawacho, Itabashi-ku, Tokyo / Higashisakashita, Itabashi-ku, Tokyo / Higashiyamacho, Itabashi-ku, Tokyo / Fujimimachi, Itabashi-ku, Tokyo / Futabacho, Itabashi-ku, Tokyo / Funado, Itabashi-ku, Tokyo / Honcho, Itabashi-ku, Tokyo / Maenocho, Itabashi-ku, Tokyo / Misono, Itabashi-ku, Tokyo / Minamimachi, Itabashi-ku, Tokyo / Minamijokadai, Itabashi-ku, Tokyo / Miyamoto-cho, Itabashi-ku, Tokyo / Mukohara, Itabashi-ku, Tokyo / Yamatocho, Itabashi-ku, Tokyo / Yayoicho, Itabashi-ku, Tokyo / Yotsuba, Itabashi-ku, Tokyo / Wakaki, Itabashi-ku, Tokyo
・Trust Kakeru Koumuten for exterior wall painting in Itabashi, Tokyo!
・Trust Kakeru Koumuten for roof renovations in Itabashi, Tokyo!
・Trust Kakeru Koumuten for exterior renovations in Itabashi, 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 key comparison points!
・Trust Kakeru Koumuten for leak repairs in Itabashi, Tokyo!
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株式会社翔工務店へ
株式会社翔工務店は平均年齢20代後半の若い会社ですが、技術はどこにも負けていません。
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!




