Leave your skylight repairs and replacements in Bunkyo-ku, Tokyo to Kakeru Koumuten Co., Ltd.!
If you are looking for a
skylight contractor in
Bunkyo-ku, Tokyo,
Kakeru Koumuten Co., Ltd. provides
complete in-house construction from temporary scaffolding setup to
roof work and skylight installation.
We have received numerous requests for skylight repairs and replacements in Bunkyo-ku, Tokyo.
In case of emergencies such as leaks from skylights (top lights), we will respond promptly for repairs and
temporary measures.
“About subsidies available for skylight work in Bunkyo-ku, Tokyo”
“About the costs of skylight repairs and replacements”
“Why Kakeru Koumuten is chosen in Bunkyo-ku, Tokyo” and more
For customers living in Bunkyo-ku, Tokyo, who are considering skylight replacement,
this information will definitely be helpful, so please take a look!
To conclude, the most important thing to consider when planning skylight work is
“multiple estimates”!
Let’s obtain estimates from at least three companies for skylight repair services in Bunkyo-ku, Tokyo!
Reasons why Kakeru Koumuten is chosen for skylight work in Bunkyo-ku, Tokyo

The reasons why you can trust us with skylight repairs in Bunkyo-ku, 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.
“cost, quality, and plans” for skylight replacement work in Bunkyo-ku, Tokyo,
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 houses!
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 installation.
Additionally, one representative will handle everything from the estimate to project completion.
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 fully handle everything from temporary scaffolding installation to exterior painting, roofing work, and exterior cover work with in-house construction!
Since skylight installation involves dismantling or removing roofing materials, performing it simultaneously with roof replacement or cover work can significantly reduce costs!
3. Various Permits Obtained & Skilled Workers on Staff
We have obtained construction industry licenses and permits for industrial waste collection and transportation!
We have qualified professionals such as national certified sheet metal workers and painting technicians, 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, 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 respond using a drone!
During rain 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 measures for sudden rain 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 techniques and skills, we regularly provide technical training to ensure all staff can respond effectively.
Subsidies and Grants Available for Skylight Construction in Bunkyo-ku, Tokyo
In Bunkyo-ku, 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 yen 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 yen to 600,000 yen depending on the work content. In either case, even if multiple works are carried out, the total subsidy cannot exceed this maximum amount.
Subsidy Rate
This program does not provide a subsidy based on a certain percentage of construction costs; instead, a predetermined “fixed subsidy” is granted based on the work content and performance category. Therefore, in effect, the government covers part of the construction costs.
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 subsidies are fully refunded to the homeowners through discounts on construction costs.
Requirements
Eligible works include window renovation projects aimed at improving insulation performance, such as installing interior windows, replacing exterior windows, and exchanging 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 up to this maximum amount.
Subsidy Rate
The subsidy rate is approximately 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 about 50% of the construction cost.
For more details, please click here!
【Bunkyo-ku】 Bunkyo-ku New Energy and Energy-Saving Equipment Installation Subsidy Program
In Bunkyo-ku, to promote the use of equipment that effectively reduces greenhouse gas emissions contributing to global warming, a portion of the expenses related to the installation of new energy and energy-saving equipment will be subsidized.
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 warranty periods vary based on 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 enters the room abundantly, it creates a sense of openness, making you feel more comfortable.
Energy Savings

This is also related to the high light transmission, as having natural light allows you to save on electricity costs. It reduces the need to turn on lights during the day, making it 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 with closely spaced houses, 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 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 to be maintained every 5 to 10 years to prevent leaks. While maintenance may seem bothersome, it is recommended to do 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 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.
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 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.
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 can lead to leaks. We will check that the fittings are securely fastened.
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, 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 checking 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 showcasing 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 abundant repair experience.
It is also 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 hiring them.
Kakeru Koumuten Co., Ltd. specializes in exterior work, and 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 may lead to leaks after installation or high construction costs, resulting in potential troubles.
Additionally, 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 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 warranty periods are often confident in their work, making this a key 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.
Furthermore, 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 free support for simple repairs such as partial sealing.
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 costs and warranties or after-sales services can vary between contractors.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at the best possible price, it is essential to obtain estimates from multiple contractors.
When comparing estimates, be sure to look at not just the costs, but also
“Items in the estimate”
“Materials and quality such as glass”
“Confirmation of processes”
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 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 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 proposed skylight replacements that incur higher expenses, even when partial repairs would suffice.
Additionally, since they investigate and then request subcontractors, both time and costs can increase unnecessarily.
By having knowledge and experience and performing the work in-house, we can provide responsible construction while keeping costs down.
Moreover, with contractors that outsource completely, one disadvantage is that their response to post-construction troubles or emergencies tends to be delayed.
If you are looking for a skylight replacement contractor in Bunkyo-ku, Tokyo, please contact Kakeru Koumuten Co., Ltd.
Our company handles many roofing and exterior painting projects in Bunkyo-ku, Tokyo. We are happy to assist with skylight replacements, roof overlays, roof re-roofing, exterior painting, exterior cladding replacements, and partial roof repairs, as well as other repairs!
In urgent cases such as water leakage repairs, we may also be able to provide emergency measures without scaffolding, so 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 carry out everything from temporary scaffolding work to roofing and exterior painting entirely in-house.
We are confident that our costs, quality, and organization for exterior work are unmatched compared to other companies!
We welcome competitive estimates with confidence!
Exterior Renovation Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
Bunkyo-ku, TokyoArea List
Otsuka, Bunkyo-ku / Otowa, Bunkyo-ku / Kasuga, Bunkyo-ku / Koishikawa, Bunkyo-ku / Korakuen, Bunkyo-ku / Kohinata, Bunkyo-ku / Suidobashi, Bunkyo-ku / Sekiguchi, Bunkyo-ku / Sengoku, Bunkyo-ku / Sendagi, Bunkyo-ku / Nishikata, Bunkyo-ku / Nezu, Bunkyo-ku / Hakusan, Bunkyo-ku / Honkomagome, Bunkyo-ku / Hongo, Bunkyo-ku / Mukogaoka, Bunkyo-ku / Mejirodai, Bunkyo-ku / Yayoi, Bunkyo-ku / Yushima, Bunkyo-ku
・Leave your exterior wall painting in Bunkyo-ku, Tokyo to Kakeru Koumuten Co., Ltd.!
・Leave your roof renovation in Bunkyo-ku, Tokyo to Kakeru Koumuten Co., Ltd.!
・Leave your exterior renovation in Bunkyo-ku, Tokyo to Kakeru Koumuten Co., Ltd.!
・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!
・Leave your leak repairs in Bunkyo-ku, Tokyo to Kakeru Koumuten Co., Ltd.!
We welcome inquiries via LINE◎
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!




