目次
- 1 If you are looking for a skylight contractor in Aiko-gun (Aikawa Town, Kiyokawa Village), Kakeru Koumuten is here for you
- 2 Reasons why Kakeru Koumuten is chosen for skylight work in Aiko-gun
- 3 Subsidies and Grants That May Be Applicable for Skylight Construction in Aiko District
- 4 Skylight Repair and Replacement Price List
- 5 Customer Feedback
- 6 Advantages and Disadvantages of Skylights
- 7 Examples of skylight repair work
- 8 Skylight Replacement Work – Construction Procedure
- 9 How to Choose a Skylight Contractor
- 10 If you are looking for a skylight replacement contractor in Aiko-gun, Kanagawa Prefecture, please contact Kakeru Koumuten Co., Ltd.
If you are looking for a
skylight contractor in
Aiko-gun (Aikawa Town, Kiyokawa Village), Kakeru Koumuten is here for you
Kakeru Koumuten is a home improvement company that performs
everything from temporary scaffolding setup to
roof work and skylight installation with complete in-house construction.
We have received numerous requests for skylight repairs and replacements in Aiko-gun.
We respond quickly to urgent skylight repairs, such as leaks from skylights (top lights),
and provide emergency measures as needed.
“About subsidies available for skylight work in Aiko-gun”
“About the costs of skylight repairs and replacements”
“Reasons why Kakeru Koumuten is chosen in Aiko-gun”
For customers living in Aiko-gun who are considering skylight replacements,
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 at least three estimates from skylight repair contractors covering Aiko-gun!
Reasons why Kakeru Koumuten is chosen for skylight work in Aiko-gun

Regarding why we are entrusted with skylight repairs in Aiko-gun,
one reason is that “Kakeru Koumuten is a roofing company within Kanagawa Prefecture,”
but we also have “initiatives in skylight replacement work that cannot be imitated by other companies”
which have 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 approximately enough scaffolding materials for 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 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 everything 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 the completion of the work.
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 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, it can be done simultaneously with roof replacement or cover work, significantly reducing 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 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 will send out a 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 utilize drones to assist!
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
To enhance our skills, we are creating various roof models 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 Aiko District
In Aiko District, there are potential subsidies available when performing skylight construction!
For details, please contact our company or your local municipality!
Kanagawa Prefecture Existing Housing Energy Efficiency Renovation Subsidy
Eligible Applicants
The eligible applicants for this subsidy are owners of existing homes 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, it is necessary to target existing homes in the prefecture and conduct energy efficiency renovation work using products such as windows or glass with specified insulation performance and insulation materials designated by the national government. Additionally, the home must ensure seismic performance, and a pre-application must be submitted before starting the work, with the condition that construction begins only after receiving a grant decision. Eligible construction work 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 efficiency renovation work is carried out, and no more than this amount can be received.
Subsidy Rate
The burden ratio for 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 granted will be limited to “up to the maximum amount.”
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 energy efficiency 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 national government, such as ZEH standards or higher. For renovations, it is required to conduct work that improves the energy efficiency performance 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 carry out 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 classification of the house. For renovations, the maximum subsidy per unit is between 400,000 yen and 600,000 yen, depending on the nature of the work. In both cases, 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; instead, it offers a predetermined “fixed subsidy” based on the nature of the work and performance classification. Therefore, in effect, the government covers a portion of the construction costs.
For more details, please click here!
Advanced Window Renovation Project
Eligible Participants
Owners of existing houses (single-family homes and apartment buildings) 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” recognized by the government, and the granted subsidies are fully refunded to the homeowners through discounts on 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 start 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 received for the same house will not exceed this limit.
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, exterior, glass), size, and insulation performance classification, resulting in a total that is approximately 50% of the construction costs.
For more details, please click here!
[Aikawa Town]
[Kiyokawa Village] Housing Renovation Subsidy System
Kiyokawa Village is conducting a program to subsidize a portion of the costs for residents who use local contractors for individual housing renovation work, aimed at revitalizing the local economy and improving living spaces.
◎ About the Housing Renovation Subsidy System
◎ Kiyokawa Village Housing Renovation Subsidy Guidelines (PDF)
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)
(株式会社翔工務店施工)
(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 depending on the shape, quantity, condition of the base, whether it involves roof overlay or re-roofing 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 more comfortable.
Energy savings
This also contributes to high light transmission, allowing you to save on electricity costs due to the presence of natural light. As a result, you will use less electricity during the day, making it suitable for energy conservation.
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 where houses are closely packed together, 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 certainly some risk of water leakage.
However, with proper installation and regular maintenance, the risk can be minimized significantly.
Regular maintenance is necessary
Skylights require maintenance 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 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 can easily be transmitted indoors. This can be particularly 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 Replacement Work |
| New Materials Used |
| Japan Velux/FCM Fixed Type |
| Price Range |
| 400,000〜500,000 |
| Construction Period |
| 1 Day |
| Background to the Construction |
| 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 Framework
4. Waterproof Sheet Installation Around Skylight
This is an important task to prevent leaks.
5. Metal Work Around Skylight and New Roof Material Installation
If the skylight is not properly sealed, there is a high risk of 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 Aikou-gun, 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 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 checking the above 5 points, you will be able to choose a reliable contractor.
Have Extensive Experience in Skylight Work
Skylight contractors often have websites showcasing 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 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 can also be effective to look at skylight contractors based on reviews from Google and review sites!
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, there is a possibility of issues arising after installation, such as leaks or high construction costs.
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 Warranty and Aftercare Services
When choosing a skylight contractor, make sure to check for warranty availability.
If a leak occurs after the skylight installation, having a leak warranty from the contractor ensures that repairs can be done at no cost, providing peace of mind!
Additionally, companies that offer a warranty are often confident in their work, making it 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 aftercare services in addition to warranties, so be sure to check if the contractor you are considering has warranties and aftercare services.
Kakeru Koumuten Co., Ltd. sends out annual DM for aftercare maintenance, allowing for yearly inspections.
We also provide free assistance for simple repairs like partial sealing.
Obtain Estimates from Multiple Contractors (at least 3)
When requesting skylight installation, make sure to obtain estimates from multiple contractors.
Even for the same repair or replacement work, costs and warranty or aftercare services can vary between contractors.
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 multiple contractors.
When comparing estimates, consider not just the cost, but also
“Items in the estimate”
“Materials and quality of glass”
“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 plans for skylight repair work, 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 a partial repair that would suffice.
Additionally, since the contractor will investigate and then request a subcontractor, both time and costs will increase.
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 work, one of the disadvantages is that response times during emergencies, such as post-construction troubles, tend to be slow.
If you are looking for a skylight replacement contractor in Aiko-gun, Kanagawa Prefecture, please contact Kakeru Koumuten Co., Ltd.
Our company handles many roofing and exterior painting projects in Aiko-gun. We are happy to assist with skylight replacements, roof overlays, roof re-roofing, exterior painting, exterior cladding, and partial roof repairs, as well as other repairs!
In urgent cases such as water leakage work, we may also be able to 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 performance because the indoors are hot”, we will provide the best solutions.
We perform everything from temporary scaffolding work to roofing and exterior painting entirely in-house.
We are confident that our costs, quality, and organization are unmatched compared to other companies in 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 Aiko-gun (Aikawa Town, Kiyokawa Village)
Aikawa Town / Kiyokawa Village
・For exterior wall painting in Aikou-gun, Kanagawa (Aikawa Town and Kiyokawa Village), trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Aikou-gun, Kanagawa (Aikawa Town and Kiyokawa Village), trust Kakeru Koumuten Co., Ltd.!
・For exterior renovations in Aikou-gun, Kanagawa (Aikawa Town and Kiyokawa Village), trust 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!
・For leak repairs in Aikou-gun, Kanagawa (Aikawa Town and Kiyokawa Village), trust Kakeru Koumuten Co., Ltd.!
We welcome inquiries 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!





