If you are looking for a waterproofing contractor in Shibuya-ku, Tokyo
please contact Kakeru Koumuten
Kakeru Koumuten specializes in exterior renovations.
We receive many requests for waterproofing work for both single-family homes and apartment buildings in Shibuya-ku, Tokyo.
“Reasons why Kakeru Koumuten is chosen in Shibuya-ku”
“Costs of waterproofing work”“
“How to choose a waterproofing contractor”
“Subsidies and grants available for waterproofing work in Shibuya-ku”
We will explain the above four points!
This will definitely be helpful for customers considering waterproofing work in Shibuya-ku, Tokyo, so please take a look!
Reasons why Kakeru Koumuten is chosen for waterproofing work in Shibuya-ku, Tokyo
Regarding why our company is entrusted with waterproofing work by customers in Shibuya-ku, Tokyo,
“Our strengths in waterproofing work that cannot be imitated by other companies” have received high praise from many customers.
We have absolute confidence in “cost,” “quality,” and “plans,” so we would appreciate it if you could compare our estimates with those of other companies.
Because we are confident, we welcome competitive estimates!
1.Facilities Specialized in Exterior Renovation
Kakeru Koumuten Co., Ltd. has prepared the following warehouses and material storage areas to provide more affordable and faster waterproofing and other exterior renovation services.
We have established 5 bases centered around Aoba-ku, Yokohama for material storage and showrooms.
In-House Scaffolding Materials
We own the scaffolding materials necessary for temporary scaffolding required for waterproofing work, allowing us to assemble temporary scaffolding in-house.
By conducting scaffolding work with our own scaffolding team instead of outsourcing, we can also reduce the costs associated with scaffolding work.
Since everything is handled in-house, we can significantly reduce costs by shortening the construction period!
We have enough scaffolding materials for approximately 50 single-family homes!
Storage of materials in our large in-house warehouse
We store roofing materials and waterproofing components.
By ordering a large quantity of materials at once, we can purchase materials at a lower cost!
Additionally, we always have waterproofing components in stock, allowing us to respond quickly to emergency waterproofing work!
In-house sorting of waste materials
Various waste materials are generated during waterproofing work.
Most contractors dispose of them all together, but by sorting and recycling the waste materials, significant cost savings on waste disposal can be achieved.
Exterior Renovation Dedicated Showroom
In our showroom, not only can you have meetings, but you can also directly check the actual structures and colors.
2．Complete In-House Construction
One of Kakeru Koumuten’s major strengths is complete in-house construction.
From inquiry to project completion, everything is handled by Kakeru Koumuten Co., Ltd. This allows us to keep costs down while providing high-quality waterproofing work.
Additionally, one representative will assist you from the estimate to the completion of the work.
Since the same person will handle sales and construction management, smooth communication is possible.
We are confident in our construction plans and costs, so we welcome competitive estimates!
3. Various Permits and Skilled Workers
We have obtained permits for construction work and industrial waste collection and transportation!
We also have qualified personnel on staff, and we are confident in our construction techniques.
We are capable of handling large-scale waterproofing projects such as those for factories!
4. Warranty and Aftercare Maintenance
Waterproofing work comes with a guarantee!
Depending on the type of waterproofing work, we provide a 5 to 10-year leak guarantee.
If you have any questions about the guarantee, please click on the image above!
In the unlikely event that leaks are not resolved after the waterproofing work, we will take responsibility and address the issue!
Additionally, aftercare maintenance is available every year, and we will send you a DM reminder for aftercare maintenance once a year.
During aftercare maintenance, we will check the entire waterproofing system and assess the condition of any deterioration.
5. Flexible and Prompt Response
Our company is equipped to handle various troubles and situations.
If we cannot access the rooftop for waterproofing checks, we will utilize drones to assess the condition.
During leak investigations, we can also conduct inspections using thermal imaging cameras.
We will respond according to your wishes.
We also accept emergency measures for sudden leaks!
Since our sales and construction management are not separated, one dedicated representative will handle everything from the estimate to the completion of the work!
Changing representatives frequently can lead to miscommunication regarding the details and precautions of the work, which could cause issues, so we maintain a system where the representative remains the same.
6. Human Resource Development
We create various building models to enhance our skills and conduct practical training.
To ensure that each staff member can handle various buildings, we regularly provide technical training.
Subsidies and Grants That May Apply to Waterproofing Work in Shibuya-ku, Tokyo
Tax Reduction for Promoting Longevity of Condominiums (Property Tax Reduction)
Requirements for Tax Reduction for Promoting Longevity of Condominiums
Condominiums over 20 years old
Total number of units: 10 or more
Completion of longevity improvement work at least once in the past + completion of the second or subsequent work between April 1, 2023, and March 31, 2027
Condominiums with a management plan certification or those that have established or reviewed long-term repair plans with advice and guidance from the municipality
The residential floor area of the exclusive portion occupies more than 50% of the total
Details of Tax Reduction
Applicable: Property tax on the building portion imposed in the fiscal year following the completion of the work.
Maximum Reduction: Up to the equivalent of 100㎡ per unit
Tax Reduction Rate: The tax amount within the above range is reduced by 1/2 (50%)
Others
If damage caused by natural disasters is recognized, it may be covered by fire insurance.
In terms of waterproofing, examples of damage from natural disasters include “holes in the waterproof sheet caused by flying objects or falling debris due to wind damage.”
If you are unsure whether it is covered by fire insurance, please feel free to contact us!
About the Costs of Waterproofing Work
⇧ For our construction menu | Click here for waterproofing costs
Customer Testimonials
カテゴリ ‘voice’ は見つかりません
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customer reviews
Asao-ku, Kawasaki City | We received reviews about the ridge cap and rain gutter replacement work!
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customer reviews
Kohoku-ku, Yokohama | We received reviews about the roof overlay (cover method)!
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customer reviews
Kohoku-ku, Yokohama | We Received Reviews About Exterior Painting!
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customer reviews
Aoba-ku, Yokohama | We received reviews about our exterior fence construction!
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customer reviews
Tsurumi-ku, Yokohama | We received reviews about roof and exterior wall painting, as well as metalwork and rain gutter replacement work!
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customer reviews
Higashiyamato City, Tokyo | We received reviews about exterior painting and roof overlay (cover method)!
Examples of Waterproofing Work
| Construction Details |
| Urethane waterproofing ventilation cushioning method / High-strength urethane type Existing waterproofing: PVC sheet waterproofing |
| Materials Used |
| Waterproofing: AGC polymer building materials / Saracene A (high-strength urethane) Ventilation sheet: QV sheet Vent pipe: Stainless steel Replaced with renovation drain |
| Price Range |
| 700,000 to 800,000 yen |
| Construction Period |
| Approximately 2 weeks |
| Completion Month |
| May 2024 |
| Inquiry Details |
| We have received the following inquiries from our customer: ・There are wrinkles and bulges in the waterproof sheet on the rooftop, so we are worried about leaks. ・We would like an estimate for a complete waterproofing renovation, not just partial repairs or a top coat. ・We learned that urethane waterproofing has high waterproofing properties, so we would like an estimate for urethane waterproofing. ・Since this is our first waterproofing project, we would like to compare estimates. |
Our Proposal
Since you expressed a desire to renovate using a long-lasting method rather than protective agents like top coats, we proposed a complete “urethane waterproofing work” for the rooftop.
If urethane waterproofing is applied using a bonding method, air rising from the building can cause bulges in the waterproof layer, so we proposed the “urethane waterproofing ventilation buffer method.”
The ventilation buffer method involves applying a ventilation buffer sheet over the entire area before conducting urethane waterproofing.
By applying the ventilation buffer sheet first, the air rising from the building is suppressed by the ventilation sheet and expelled through a “ventilation pipe.”
This method can prevent the most common trouble of bulging in the waterproof layer!
After explaining the materials and methods, you entrusted the work to us among the four estimates!
Timing for Waterproofing Work
If Leaks Are Already Occurring
If leaks have already occurred, it is necessary to address the issue promptly before the damage expands.
If left unattended, it can adversely affect the interior and underlying structures, so it is essential to stop the leaks quickly.
Bulges or Cracks in the Waterproof Layer
If the waterproof section is cracked, it can lead to rainwater intrusion.
If the waterproof layer is bulging, it indicates that moisture is accumulating within the layer.
Bulging can lead to cracks, which can result in leaks, so early detection and action are necessary.
Moss or Mold Growth
Moss or mold can develop due to the accumulation of moisture or rainwater.
This can be caused by poor drainage or sinking of the waterproof layer due to aging.
If the Durability Period Has Been Exceeded
Generally, the durability period for waterproofing work is between 10 to 20 years.
Of course, the durability period can vary depending on the construction method and materials, but for some types of waterproofing, it is recommended to apply only the surface protective agent (top coat) approximately every 8 years (such as urethane waterproofing or FRP waterproofing).
We recommend conducting regular inspections starting from 5 years after construction.
Understanding the types of waterproofing and performing appropriate maintenance is essential.
If you are unsure about the type of waterproofing, please send us a photo via email or LINE, and we will help you determine it!
Types of Waterproofing Work
1. Urethane Waterproofing
Urethane waterproofing is a method where liquid polyurethane resin is applied in layers to the waterproofing surface.
Before curing, it is in liquid form, allowing it to be applied to complex shapes and, unlike sheet waterproofing, it can be installed without seams. This makes it suitable for a wide range of applications, such as balconies and rooftops.
For more details on the advantages, disadvantages, and maintenance methods of urethane waterproofing, please refer to the article below.
For more on waterproofing work | Urethane waterproofing, click here!
2. Rubber Sheet Waterproofing
Rubber sheet waterproofing involves adhering synthetic rubber sheets to the surface to prevent water intrusion.
This type of waterproofing is commonly used on large areas such as rooftops.
Compared to urethane waterproofing, it has the advantage of faster installation since there is no waiting for drying, but it is not suitable for complex surfaces.
For more details on the advantages, disadvantages, and maintenance methods of rubber sheet waterproofing, please refer to the article below.
For more on waterproofing work | Rubber sheet waterproofing, click here!
3. PVC Sheet Waterproofing
PVC sheet waterproofing is a waterproof sheet made of polyvinyl chloride, and like rubber sheet waterproofing, it is applied to the surface to prevent water intrusion.
Similar to rubber sheets, it is not suitable for complex shapes. Although it is more expensive than rubber sheets and urethane waterproofing, its long durability is a significant advantage.
For more details on the advantages and disadvantages of PVC sheet waterproofing and maintenance methods, please refer to the article below.
For waterproofing work | Click here for information on PVC sheet waterproofing!
4. Long Sheet Waterproofing
Long sheet waterproofing, officially known as “slip-resistant vinyl flooring sheet,” is commonly applied in shared areas and staircases of apartments where people walk.
As the name suggests, it is slip-resistant and has high durability and abrasion resistance, making it suitable for walking areas.
Additionally, it comes in various designs, excelling in aesthetic appeal.
However, it tends to be more expensive, and since it does not overlap seams like rubber sheets or PVC sheets, it may give a slightly lower impression of waterproofing.
It is rarely used in areas like rooftops of apartments where people do not frequently enter.
For more details on the advantages and disadvantages of long sheet waterproofing and maintenance methods, please refer to the article below.
For waterproofing work | Click here for information on long sheet waterproofing!
5. FRP Waterproofing
FRP waterproofing involves creating a waterproof layer by solidifying glass mat with epoxy resin to prevent rainwater intrusion.
It is commonly applied in single-family home balconies, and the construction period is remarkably short, often completed in as little as one day.
Due to its lightweight and low cost, it seems that about 80% of single-family home balconies use FRP waterproofing.
However, it is not suitable for installation on large areas, making it less appropriate for rooftops.
For more details on the advantages and disadvantages of FRP waterproofing and maintenance methods, please refer to the article below.
Waterproofing Work | Click here for FRP Waterproofing!
6. Asphalt Waterproofing
Asphalt waterproofing is a waterproof sheet that has asphalt permeated into synthetic fiber non-woven fabric.
The waterproofing shown in the photo is a method where asphalt waterproofing is pressed down with cinder concrete.
This waterproofing is used in buildings with large areas, such as rooftops of schools and commercial facilities.
There are various methods of asphalt waterproofing, each with its own advantages and disadvantages, but a significant advantage is its high durability.
For more detailed information on the advantages, disadvantages, and maintenance methods of asphalt waterproofing, please refer to the article below.
Waterproofing Work | Click here for Asphalt Waterproofing!
How to Choose a Waterproofing Contractor
There are many waterproofing contractors available in Shibuya-ku, Tokyo.
Among the numerous contractors, many people may feel, “I don’t know who to ask…”.
Choosing the right contractor can be challenging at first, so I will explain the 5 points to consider when requesting waterproofing work.
● Have extensive experience in waterproofing work
● Check for aftercare and warranty availability
● Obtain estimates from multiple contractors (at least 3 companies)
● Confirm whether they perform waterproofing work in-house
● Carefully review the details of the waterproofing estimate, including processes and materials used
By confirming the above 5 points, you will be able to choose a reliable contractor.
Check for Extensive Experience in Waterproofing Work
About 10-20% of waterproofing work troubles are caused by construction defects during the installation.
To prevent troubles, it is important to hire a contractor who is experienced and trustworthy!
You need to refer to the contractor’s website for their construction achievements and reviews to make a judgment.
There are also contractors who showcase their achievements on social media platforms like Instagram, so checking those can be effective!
It is also effective to look at waterproofing companies on review sites for reference!
A particularly recommended review site is “Google”.
Since contractors cannot arbitrarily delete low ratings, it provides reliable reviews.
If there are many negative reviews or no reviews at all, it may be wise to refrain from making a request.
Check if there is aftercare maintenance and construction warranty
In case any construction defects or issues occur after the work, let’s confirm if they provide a “construction warranty“!
Contractors who offer a warranty are usually confident in their work, making them more trustworthy!
If waterproofing work is done, make sure to have photos taken of hidden areas and check them!
Check for leaks during rainy weather after the waterproofing work, and if there are any issues, contact the contractor immediately as it will facilitate smooth communication shortly after the work is completed!
Also, to ensure early detection of any issues that may arise, confirm whether they conduct thorough aftercare maintenance!
Since non-specialized contractors may not notice early signs of problems or troubles, having a specialized contractor perform regular aftercare maintenance can help prevent issues before they occur!
Our company sends out aftercare maintenance DM every year, so if desired, annual aftercare maintenance is possible!
Obtain estimates from multiple contractors (at least 3)
When requesting waterproofing work, be sure to obtain estimates from multiple contractors.
We recommend obtaining estimates from at least 3 companies.
Even for the same waterproofing work, costs may vary between contractors, and warranties and after-services may differ as well.
Additionally, obtaining multiple estimates makes it easier to negotiate prices. To request at the lowest possible cost, it is essential to get estimates from several contractors.
When comparing estimates, check not only the costs but also the details such as “types of materials used” and “construction methods”!
Confirm if they perform waterproofing work in-house
Let’s confirm whether we handle waterproofing work in-house!
If a sales company investigates and then requests a subcontractor, it can take more time and incur additional costs.
Moreover, there may be cases where your requests are not fully communicated to the subcontractor, leading to potential troubles.
By having one company manage everything from sales to construction, we can ensure responsible waterproofing work that is quick and cost-effective. Kakeru Koumuten Co., Ltd. conducts everything from on-site surveys to actual construction in-house!
Additionally, in the unlikely event of a leak or trouble, a company that employs its own craftsmen can respond to and resolve issues quickly!
Carefully check the details of the waterproofing estimate, process, and materials used
Even with the same waterproofing work, there are various types such as “methods,” “materials,” and “processes,” and it is necessary to use the optimal method and materials based on the construction location and existing substrate.
For example, even with the same urethane waterproofing, there are different types of processes such as “adhesion method” and “ventilated buffer method,” and there are various types of urethane waterproofing materials, including “high-strength specifications,” “heat-insulating specifications,” and “anti-slip specifications.” Therefore, it is essential to confirm whether the construction content is appropriate for the location!
It is important not to judge solely based on cost, but to carefully check whether “the method is appropriate for the substrate?” and “are the materials suitable?”
Thus, if the materials used are only “urethane waterproofing materials,” make sure to check the product name and understand what kind of materials they are!
If you are looking for a waterproofing contractor in Shibuya-ku, Tokyo, please contact Kakeru Koumuten Co., Ltd.
Our company has handled many waterproofing projects in Shibuya-ku, Tokyo.
Our greatest strength is our ability to perform everything from proposals to temporary scaffolding installation and waterproofing work in-house!
Kakeru Koumuten Co., Ltd. promises “high-quality waterproofing work at low cost”, and we have received positive feedback from many customers.
We continue to update our annual construction performance records and will strive to improve quality to satisfy even more customers in the future.
We are happy to handle even small partial projects!
Not only waterproofing work but also roofing work, exterior painting, and exterior cover methods can all be performed in-house.
We are confident that we will not be outdone by other companies in terms of cost, quality, and organization for exterior work!
We welcome competitive estimates with confidence!
Estimates are completely free, and if you find our company lacking compared to others, feel free to decline!
For information on exterior renovations in Shibuya-ku, Tokyo, click here!
For information on exterior painting in Shibuya-ku, Tokyo, click here!
For information on roof renovations in Shibuya-ku, Tokyo, click here!
For information on leak repairs in Shibuya-ku, Tokyo, click here!
Features of Shibuya-ku, Tokyo
Shibuya-ku, Tokyo, is located in the central western part of the 23 wards of Tokyo, covering an area of approximately 15.11 square kilometers, which is slightly smaller than average. However, it has a population of about 243,000, with a daytime population swelling to around 539,000, showcasing the characteristics of a bustling urban area.
The area around Shibuya Station is known for the famous scramble crossing and the statue of Hachiko, attracting many visitors from both Japan and abroad as a hub of youth culture. Additionally, the Harajuku area, including Takeshita Street and Omotesando, is popular for its unique fashion and high-end brands.
In terms of transportation, multiple lines such as the JR Yamanote Line, Saikyo Line, Shonan-Shinjuku Line, Tokyo Metro lines, Tokyu Corporation, and Keio Electric Railway radiate from Shibuya Station, providing very convenient access to both within and outside the city.
Furthermore, Shibuya-ku has the highest number of large retail stores among the 23 wards, and ongoing redevelopment is expected to significantly transform the area in the future. On the other hand, the area offers a relatively spacious urban park area per resident, ranking in the middle among the 23 wards, creating a harmonious living environment that balances nature and urban life.
Thus, Shibuya-ku is an attractive region where tradition and cutting-edge culture blend, making it a beloved destination for both tourism and residence.
Our company offers a wide range of waterproofing services in Shibuya-ku. We can handle all exterior renovations, including waterproofing, roofing, and exterior painting, with our own skilled workforce.
If you have any concerns, please feel free to consult us!
Areas Covered for Waterproofing Services
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
List of Areas in Shibuya-ku, Tokyo
Uehara, Shibuya-ku / Uguisudani-cho, Shibuya-ku / Udagawacho, Shibuya-ku / Ebisu Nishi, Shibuya-ku / Ebisu Minami, Shibuya-ku / Ebisu, Shibuya-ku / Oyama-cho, Shibuya-ku / Kamiyama-cho, Shibuya-ku / Sakuragaoka-cho, Shibuya-ku / Sasazuka, Shibuya-ku / Sarugakucho, Shibuya-ku / Shibuya, Shibuya-ku / Shoto, Shibuya-ku / Shinsen-cho, Shibuya-ku / Jingumae, Shibuya-ku / Jinnan, Shibuya-ku / Sendagaya, Shibuya-ku / Daikanyama-cho, Shibuya-ku / Tomigaya, Shibuya-ku / Dogenzaka, Shibuya-ku / Minamidai-cho, Shibuya-ku / Nishihara, Shibuya-ku / Hatagaya, Shibuya-ku / Hachiyama-cho, Shibuya-ku / Hatsudai, Shibuya-ku / Higashi, Shibuya-ku / Hiroo, Shibuya-ku / Honmachi, Shibuya-ku / Maruyama-cho, Shibuya-ku / Moto-Yoyogi-cho, Shibuya-ku / Yoyogi Kamiyama-cho, Shibuya-ku / Yoyogi, Shibuya-ku
Consultations via LINE are also very welcome◎
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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!
