Leave Skylight Repair and Replacement in Sakae-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
If you are looking for a
skylight construction contractor
in Kakeru Koumuten
Kakeru Koumuten Co., Ltd. is a company that performs
everything from temporary scaffolding installation to
roof construction and skylight work with complete in-house construction.
We have received numerous requests for skylight repairs and replacements in Aoba-ku, Yokohama.
We respond quickly to urgent skylight repairs, such as leaks from skylights (top lights),
and emergency measures as well.
“About subsidies available for skylight construction in Aoba-ku”
“About the costs of skylight repairs and replacements”
“Reasons why Kakeru Koumuten is chosen in Aoba-ku”
If you live in Aoba-ku and are considering a skylight replacement,
this information will definitely be helpful, so please take a look!
To conclude, the most important thing when considering skylight construction is
“getting multiple estimates”!
Let’s obtain at least three estimates from skylight repair contractors that cover Aoba-ku!
Reasons why Kakeru Koumuten is chosen for skylight construction in Aoba-ku, Yokohama

Regarding why we can be entrusted with skylight repairs in Aoba-ku,
one reason is that “Kakeru Koumuten is a roofing company in Yokohama,” but
“Our unique approach to skylight replacement work that cannot be imitated by other companies”
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 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, 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, 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 manages sales and construction, smooth communication is possible.
We can handle everything from temporary scaffolding installation to exterior painting, roofing work, and exterior cover work completely in-house!
Skylight installation involves dismantling or removing roofing materials, so by performing it simultaneously with roof replacement or cover work, you can significantly reduce costs!
3. Various Permits Obtained & 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, 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 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 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 leaks from skylights!
6. Human Resource Development
To improve our skills, we create various roof models and conduct practical training.
Since different sites require various processing techniques and skills, we regularly provide technical training to ensure that all staff can respond effectively.
Subsidies and Grants Available for Skylight Construction in Aoba-ku, Yokohama
In Aoba-ku, Yokohama, there are potential subsidies available when conducting skylight construction!
For details, please contact our company or your local government!
Kanagawa Prefecture Existing Housing Energy Efficiency Renovation Subsidy
Eligible Applicants
The eligible applicants for this subsidy are owners of existing homes located in Kanagawa Prefecture who reside in those homes on a daily basis. The eligible homes must be residences where the owner themselves lives, regardless of whether they are single-family homes or apartments.
Eligible Construction and Conditions
To receive the subsidy, the following requirements must be met. First, the renovation must target existing homes in the prefecture and utilize products with insulation performance specified by the national government, such as windows, glass, and insulation materials for energy-efficient renovation work. Additionally, the home must ensure seismic performance, and a preliminary application must be submitted before starting the construction, with work commencing only after receiving a grant decision. Eligible construction includes insulation renovations for windows, floors, walls, and ceilings.
Subsidy Amount
The maximum amount for this subsidy is up to 200,000 yen per residence. This is the total subsidy provided when eligible energy-efficient renovation work is carried out, and no more than this amount can be received.
Subsidy Rate
The burden ratio of the subsidy is **one-third (approximately 33%) of the eligible construction costs**. However, even if the calculated amount based on the subsidy rate exceeds the maximum of 200,000 yen, the amount provided will be “up to the maximum limit.”
For more details, please click here!
Child-Rearing Green Housing Support Project
Eligible Applicants
Households with children (households with children under 18) and young couples are eligible for new construction or purchase of homes with high energy efficiency performance, or for energy-efficient renovations of existing homes. For new construction, the builder or purchaser is eligible, while for renovations, the contractor is the eligible applicant.
Requirements
For new homes, it is necessary to meet high energy efficiency performance standards set by the government, such as exceeding ZEH standards. For renovations, it is required to carry out work that improves the energy efficiency of the home, such as insulation renovations or the introduction of energy-efficient equipment. In both cases, it is necessary to contract with a registered business and complete the work within the specified period.
Subsidy Limit Amount
For new constructions, the maximum subsidy per unit is between 400,000 yen and 1,600,000 yen, depending on the performance category of the house. For renovations, the maximum subsidy per unit is between 400,000 yen and 600,000 yen, depending on the content of the work. In either case, even if multiple works are carried out, the subsidy cannot exceed this limit.
Subsidy Rate
This program does not provide a subsidy based on a certain percentage of the construction cost, but rather offers a predetermined “fixed subsidy” based on the type of work and performance category. Therefore, in effect, the government covers part of the construction cost.
For more details, please click here!
Advanced Window Renovation Project
Eligible Participants
Homeowners of existing houses (single-family homes and multi-family dwellings) who are conducting 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
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 commence and be completed within the specified construction period.
Subsidy Limit Amount
The maximum subsidy is 2,000,000 yen per unit. Even if multiple windows are renovated, the total subsidy that can be received for the same house 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 (interior window, exterior 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!
| Renovation and Repair Methods | Warranty | Cost |
| Skylight Replacement / Cover (Using products from Velux Japan) |
Manufacturer’s 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 Warranty: 3 Years and Up (Varies by method) |
Approximately 60,000 yen and up (Varies by method) |
| Skylight Removal | Construction Warranty: 3 Years and Up (Varies by method) |
Approximately 60,000 yen and up (Varies by method) |
※Costs and warranty 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 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 natural light allows you to save on electricity costs. Since you will need to turn on the lights less 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 is also enhanced.
High Privacy
In areas where houses are closely packed together, 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. Since it involves opening up the roof for installation, there is always some 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 surface can easily be transmitted indoors, which is a disadvantage. In particular, during heavy rain or typhoons, the sound can be quite noticeable.
However, this is not the case for 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 Replacement Work |
| New Materials Used |
| Japan Velux/FCM Fixed Type |
| Price Range |
| 400,000〜500,000 |
| Construction Period |
| 1 Day |
| Background to the Work |
| Due to a broken skylight glass, we received a request for skylight replacement. Along with the skylight replacement, we also replaced the surrounding roofing materials. |
Skylight Replacement Work – Construction Procedure
1. Preparation
2. Skylight Demolition and Roof Material Removal Around Skylight
3. Wooden Frame Assembly
4. Waterproof Sheet Installation Around Skylight
This is an important task to prevent water leaks.
5. Metal Work Around Skylight and New Roof Material Installation
If the skylight is not properly sealed, there is a high risk of water leaks. Therefore, it is essential to proceed with caution.
6. New Skylight Installation
By properly sealing against rain and performing regular maintenance, you can prevent leaks.
7. Cleaning
This concludes the work.
How to Choose a Skylight Contractor
There are many skylight contractors in Yokohama, and you may be unsure which one to choose.
Therefore, when requesting skylight replacement work or leak repairs, be sure to check the following 5 points:
● Have extensive experience in skylight work
● Confirm if they can also handle roof 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 checking the above 5 points, you can choose a reliable contractor.
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 when you actually request repairs.
If you are concerned about whether the contractor you are about to hire will respond adequately, choose one with extensive 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, so we receive many requests for skylight replacement work.
Confirm if They Can Handle Roof Work
Since skylights are installed on roofs, roof work is often involved as well.
If the contractor lacks knowledge about roofs or cannot handle roof work, it may lead to problems such as leaks after installation or high construction costs.
Moreover, since skylight replacement or removal may require partial roof dismantling and restoration, performing roof overlay work or re-roofing at the same time 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 demonstrate confidence in their work, making it 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 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 work, obtain estimates from multiple contractors.
Even for the same repair or replacement work, costs and warranties or after-sales services can vary by contractor.
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 several contractors.
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 work is performed 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 wishes.
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, which can be expensive, even though partial repairs would suffice.
Additionally, since they need to investigate and then request a subcontractor, both time and costs can increase.
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, tends to be delayed.
If you are looking for a skylight replacement contractor in Aoba-ku, Yokohama, please contact Kakeru Koumuten Co., Ltd.
Our company also handles many roofing and exterior painting projects in Aoba-ku, Yokohama. 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 such as leak repairs, we may also be able to provide emergency measures without scaffolding, so please feel free to consult with us!
“I want it to last long with one renovation”, “I want to keep costs as low as possible”, “I want to improve insulation performance because the indoors are hot”, we will provide the best solutions for your specific requests.
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 for exterior work!
We welcome competitive estimates as we are confident in our services!
Exterior Renovation Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
List of Areas in Aoba-ku, Yokohama
Aoba-ku, Yokohama Iijima-cho / Aoba-ku, Yokohama Inuyama-cho / Aoba-ku, Yokohama Otsuki / Aoba-ku, Yokohama Kasama-cho / Aoba-ku, Yokohama Kasama / Aoba-ku, Yokohama Kajigaya-cho / Aoba-ku, Yokohama Kajigaya / Aoba-ku, Yokohama Katsuradai Kita / Aoba-ku, Yokohama Katsuradai Naka / Aoba-ku, Yokohama Katsuradai Nishi / Aoba-ku, Yokohama Katsuradai Higashi / Aoba-ku, Yokohama Katsuradai Minami / Aoba-ku, Yokohama Katsura-cho / Aoba-ku, Yokohama Kanai-cho / Aoba-ku, Yokohama Kamigo-cho / Aoba-ku, Yokohama Kamino-cho / Aoba-ku, Yokohama Kamei-cho / Aoba-ku, Yokohama Kouta-cho / Aoba-ku, Yokohama Kosugegaya-cho / Aoba-ku, Yokohama Kosugegaya / Aoba-ku, Yokohama Koyamadai / Aoba-ku, Yokohama Shodō / Aoba-ku, Yokohama Tayata-cho / Aoba-ku, Yokohama Nakano-cho / Aoba-ku, Yokohama Nagao-dai-cho / Aoba-ku, Yokohama Nagakura-cho / Aoba-ku, Yokohama Naganuma-cho / Aoba-ku, Yokohama Nonanazato / Aoba-ku, Yokohama Kashiyou / Aoba-ku, Yokohama Higashi Kamigo-cho / Aoba-ku, Yokohama Hongodai / Aoba-ku, Yokohama Moto Ohashi / Aoba-ku, Yokohama Wakatake-cho
・Leave your exterior wall painting in Aoba-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
・Leave your roof renovation in Aoba-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
・Leave your exterior renovation in Aoba-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
・Kakeru Koumuten Co., Ltd.施工実績
・Kakeru Koumuten Co., Ltd. After Maintenance
・Kakeru Koumuten Co., Ltd.施工メニュー・料金表
・Kakeru Koumuten Co., Ltd. Staff Blog & Announcements
・We explain the importance of getting multiple estimates and points to compare!
・Leave your water leak repairs in Aoba-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
Consultations via LINE are also very welcome◎
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!





