目次
- 1 If you are looking for skylight construction contractors in Kakeru Koumuten
- 2 Reasons why Kakeru Koumuten is chosen for skylight construction in Yokosuka City
- 3 Subsidies and Grants Available for Skylight Construction in Yokosuka City
- 4 Skylight Repair and Replacement Price List
- 5 Customer Testimonials
- 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 Yokosuka City, please contact Kakeru Koumuten Co., Ltd.
If you are looking for
skylight construction contractors in
Kakeru Koumuten
Kakeru Koumuten is a company that performs
complete in-house construction from temporary scaffolding installation to
roof work and skylight construction.
We receive numerous requests for skylight repairs and replacements in Yokosuka City.
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 Yokosuka City”
“About the costs of skylight repairs and replacements”
“Reasons why Kakeru Koumuten is chosen in Yokosuka City”
If you live in Yokosuka City 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
“multiple estimates”!
Let’s obtain estimates from at least three companies that handle skylight repairs in Yokosuka City!
Reasons why Kakeru Koumuten is chosen for skylight construction in Yokosuka City

The reasons why we are entrusted with skylight repairs in Yokosuka City
include that “Kakeru Koumuten is a roofing company within Kanagawa Prefecture,”
but also our “efforts in skylight replacement construction 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
At Kakeru Koumuten Co., Ltd., we have 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 assemble scaffolding in-house.
By performing scaffolding work with our own scaffolding team instead of outsourcing, we can reduce scaffolding costs 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 thermal insulation properties using a thermal 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 inquiry 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 person in charge does not change, whether it’s sales or construction management, smooth communication is possible.
We can fully handle everything from temporary scaffolding setup to exterior painting, roofing work, and exterior covering work in-house!
Since skylight installation involves dismantling or removing roofing materials, it can significantly reduce costs when done simultaneously with roof replacement or covering work!
3. Various Permits Obtained & 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 for factories and other facilities!
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 altitudes, we can respond using a drone!
During leak investigations, we can also conduct surveys using a thermal imaging camera, which helps identify 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 create various roof models and conduct practical training.
Since different sites require various processing and techniques, we regularly provide skill enhancement education to ensure that all staff can respond effectively.
Subsidies and Grants Available for Skylight Construction in Yokosuka City
In Yokosuka City, there are potential subsidies available when carrying out 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, it is necessary to conduct energy efficiency renovation work using products such as windows or glass with specified insulation performance and insulation materials designated by the national government, targeting existing homes within the prefecture. 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 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 “up to the maximum limit.”
For more details, please see here!
Child-Rearing Green Housing Support Project
Eligible Applicants
This program targets child-rearing households (households with children under 18) and young couples, focusing on the construction or purchase of new homes with high energy efficiency performance, or energy-efficient renovations of existing homes. For new constructions, the builder or purchaser is eligible, while for renovations, the contractor placing the order is eligible for the subsidy.
Requirements
For new homes, it is necessary to meet high energy efficiency performance standards set by the government, such as ZEH standards or higher. For renovations, it is required to carry out work that improves the energy efficiency performance of the home, such as insulation renovations or the introduction of energy-saving equipment. In both cases, it is necessary to contract with a registered business and carry out the work within the specified period.
Subsidy Maximum Amount
For new constructions, the maximum amount per unit is between 400,000 yen and 1,600,000 yen, depending on the performance category of the housing. For renovations, the maximum amount 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 maximum amount.
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 category. Therefore, in effect, the government covers part of the construction cost.
For more details, please click here!
Advanced Window Renovation Project
Eligible Participants
Owners of existing homes (single-family homes and apartment buildings) who are conducting insulation renovation work on windows and openings are eligible. The actual application process for the subsidy 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 start and be completed within the specified construction period.
Subsidy Maximum Amount
The maximum subsidy amount is 2,000,000 yen per unit. 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 (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!
(Using products from Velux Japan)
(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 warranty periods vary depending on the shape, quantity, condition of the substrate, whether it is related to roof overlay work or re-roofing work, the type of existing roofing material, and the 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 Testimonials
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, 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 conducive to energy savings.
Good Ventilation

By installing a skylight, you can open and close it, which improves ventilation.
Warm air rises, so airflow becomes better.
High Privacy
In areas where houses are closely packed together, installing large windows may 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. After all, since the roof is opened for installation, there is 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 bothersome, 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, the sound may be clearly heard during heavy rain or typhoons.
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 |
| The skylight glass was broken, so we received a request for its replacement. In conjunction 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 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 will conclude the work.
How to Choose a Skylight Contractor
There are many skylight contractors in Yokosuka, and you may be unsure which one to choose.
Therefore, when requesting skylight replacement work or leak repairs, make 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 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 where they 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 adequately, choose one with extensive repair experience.
It is also effective to refer to reviews on Google and review sites to look at 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 Roofing Work
Since skylights are installed on the roof, roofing work is often involved as well.
If the contractor lacks knowledge about roofs or cannot handle roofing work, it may lead to issues such as leaks after construction or high construction costs.
Additionally, since skylight replacement or removal may require partial dismantling of the roof and restoration, performing roof overlay work or re-roofing together 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 aftercare services
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, 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.
Moreover, 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.
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, costs and warranties or aftercare 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, obtaining estimates from multiple contractors is essential.
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 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 costly projects like skylight replacement, even though 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 that keeps costs down.
Moreover, with contractors that outsource completely, one of the drawbacks 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 Yokosuka City, please contact Kakeru Koumuten Co., Ltd.
Our company handles many roofing and exterior painting projects in Yokosuka City. 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 like 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 down as much as possible” “I want to improve insulation performance because the room is 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 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 Tokyo.
Yokosuka City Area List
Akiya, Yokosuka City / Ashina, Yokosuka City / Abekura, Yokosuka City / Awata, Yokosuka City / Anjindai, Yokosuka City / Ikegami, Yokosuka City / Ikedacho, Yokosuka City / Inaokacho, Yokosuka City / Furuidocho, Yokosuka City / Iwato, Yokosuka City / Uchikawa, Yokosuka City / Uchikawa Shinden, Yokosuka City / Uraga, Yokosuka City / Uragaoka, Yokosuka City / Urakamidai, Yokosuka City / Uragomachi, Yokosuka City / Kamimachi, Yokosuka City / Otakawa, Yokosuka City / Otaki, Yokosuka City / Otsucho, Yokosuka City / Oyabe, Yokosuka City / Ogawacho, Yokosuka City / Ogino, Yokosuka City / Oihama Higashimachi, Yokosuka City / Oihama Minamimachi, Yokosuka City / Oihama Honmachi, Yokosuka City / Oihama Machi, Yokosuka City / Obara Dai, Yokosuka City / Kanaya, Yokosuka City / Kamoi, Yokosuka City / Kinugasa Eicho, Yokosuka City / Kinugasa Machi, Yokosuka City / Kogomachi, Yokosuka City / Kusunokigawamachi, Yokosuka City / Kubiri, Yokosuka City / Kumura, Yokosuka City / Kurihama, Yokosuka City / Kurihama Dai, Yokosuka City / Green Heights, Yokosuka City / Kofudai, Yokosuka City / Koyasu, Yokosuka City / Oyabe, Yokosuka City / Sakamotocho, Yokosuka City / Sakuragaoka, Yokosuka City / Sazima, Yokosuka City / Sazima no Oka, Yokosuka City / Sanocho, Yokosuka City / Sawara, Yokosuka City / Sarushima, Yokosuka City / Shioiricho, Yokosuka City / Shiomidai, Yokosuka City / Shonan Kokusai Mura, Yokosuka City / Shonan Takatore, Yokosuka City / Shinminatocho, Yokosuka City / Shinmeicho, Yokosuka City / Sugarayama, Yokosuka City / Tanaura Izumicho, Yokosuka City / Tanaura Daisakucho, Yokosuka City / Tanaura Minatocho, Yokosuka City / Tanaura Machi, Yokosuka City / Takatore, Yokosuka City / Take, Yokosuka City / Tanatodai, Yokosuka City / Tsukui, Yokosuka City / Tsurugaoka, Yokosuka City / Tomari, Yokosuka City / Nagai, Yokosuka City / Nagaura Machi, Yokosuka City / Nagasaka, Yokosuka City / Nagasawa, Yokosuka City / Nagase, Yokosuka City / Natsushima Machi, Yokosuka City / Nishi Uraga, Yokosuka City / Nishi Itsukimi, Yokosuka City / Negishi, Yokosuka City / Nobi, Yokosuka City / Highland, Yokosuka City / Hakozaki Machi, Yokosuka City / Hashirimizu, Yokosuka City / Hamamidai, Yokosuka City / Hayashi, Yokosuka City / Higashi Uraga, Yokosuka City / Higashi Itsukimi, Yokosuka City / Hikari no Oka, Yokosuka City / Hinodecho, Yokosuka City / Heisaku, Yokosuka City / Fukatadaidai, Yokosuka City / Fujimimachi, Yokosuka City / Futaba, Yokosuka City / Funakura, Yokosuka City / Funakoshimachi, Yokosuka City / Heiseicho, Yokosuka City / Heiwadai, Yokosuka City / Itsukimi ga Oka, Yokosuka City / Bouyou Dai, Yokosuka City / Honmachi, Yokosuka City / Umabori Kaigan, Yokosuka City / Umabori Machi, Yokosuka City / Midorigaoka, Yokosuka City / Minato ga Oka, Yokosuka City / Minami Uraga, Yokosuka City / Miharu Machi, Yokosuka City / Miyukihama, Yokosuka City / Morizaki, Yokosuka City / An’yura Machi, Yokosuka City / Yamashina Dai, Yokosuka City / Yamanaka Machi, Yokosuka City / Yoshii, Yokosuka City / Yoshikura Machi, Yokosuka City / Komegahamadori, Yokosuka City / Wakamatsu Machi, Yokosuka City / Wakamiya Dai
・Leave your exterior wall painting in Yokosuka, Kanagawa to Kakeru Koumuten Co., Ltd.!
・Leave your roof renovation in Yokosuka, Kanagawa to Kakeru Koumuten Co., Ltd.!
・Leave your exterior renovation in Yokosuka, Kanagawa to Kakeru Koumuten Co., Ltd.!
・Kakeru Koumuten Co., Ltd. Project Achievements
・Kakeru Koumuten Co., Ltd. After Maintenance
・Kakeru Koumuten Co., Ltd. Construction 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 Yokosuka to Kakeru Koumuten Co., Ltd.!
We welcome consultations 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!





