Leave Waterproofing Work in Chuo-ku, Tokyo to Kakeru Koumuten Co., Ltd.!
If you are looking for a waterproofing contractor in Chuo-ku, Tokyo
please contact Kakeru Koumuten
Kakeru Koumuten specializes in exterior renovations.
We receive many requests for waterproofing work in Chuo-ku, Tokyo, ranging from single-family homes to apartment buildings.
“Reasons why Kakeru Koumuten is chosen in Chuo-ku”
“About the costs of waterproofing work”
“How to choose a waterproofing contractor”
“Subsidies and grants available for waterproofing work in Chuo-ku”
We will explain the above four points!
This will definitely be helpful for customers considering waterproofing work in Chuo-ku, Tokyo, so please take a look!
Reasons why Kakeru Koumuten is chosen for waterproofing work in Chuo-ku, Tokyo
Regarding the reasons why our company is entrusted with waterproofing work by customers in Chuo-ku, Tokyo,
“Our strengths in waterproofing work that cannot be imitated by other companies”
have received high praise from many customers.
“Cost,” “Quality,” “Plan” are our absolute strengths, 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．Specialized equipment for exterior renovations
At Kakeru Koumuten Co., Ltd., we have organized the following warehouses and material storage areas to provide more affordable and faster exterior renovations such as waterproofing work.
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 performing scaffolding work with our own scaffolding team instead of outsourcing, we can also cut costs associated with scaffolding work.
Since everything is done in-house, we can significantly reduce costs through shortened construction periods!
We have enough scaffolding materials for approximately 50 houses!
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 canprocure materials at a lower cost!
Additionally, we always have waterproofing components in stock, allowing us torespond quickly to emergency waterproofing work!
In-house waste separation
In waterproofing work, various waste materials are generated.
Most contractors dispose of them all together, but by sorting and recycling the waste materials, significant cost reductions in 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 structure 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 construction industry permits and permits for industrial waste collection and transportation!
We also have national 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
Waterproofing work comes with a guarantee! Depending on the type of waterproofing work, we offer 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 respond accordingly!
Additionally, aftercare maintenance is available every year, and we will send you a DM notification 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 can cause problems, so we maintain a system where the representative remains the same.
6. Human Resource Development
To enhance skills, we create models of various buildings and conduct practical training.
We regularly provide skill enhancement education so that each staff member can handle various types of buildings.
Subsidies and Grants That May Apply to Waterproofing Work in Chuo-ku, Tokyo
Currently, there are no subsidies or grants available for waterproofing work in Chuo-ku, Tokyo.
If damage from natural disasters is recognized, it may be covered by fire insurance.
Examples of damage considered under waterproofing due to natural disasters include “holes in waterproof sheets caused by flying objects or falling debris due to wind damage.”
If you are unsure whether your fire insurance applies, please feel free to contact us!
About the Cost of Waterproofing Work
⇧ For the construction menu | Click here for information on 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)!
Waterproofing Work Case Studies
| Construction Details |
| Urethane Waterproofing Ventilated Cushion 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 Ventilation 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, causing concerns about leaks. ・Please provide an estimate for a complete waterproof renovation, not just partial repairs or a top coat. ・I learned that urethane waterproofing has high waterproofing properties, so I would like an estimate for urethane waterproofing. ・Since this is my first waterproofing project, I would like to compare estimates from multiple companies. |
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 project” for the rooftop.
If urethane waterproofing is applied using a direct adhesion method, air rising from the building can cause bulges in the waterproof layer. Therefore, we proposed the “urethane waterproofing ventilation buffer method.”
The ventilation buffer method involves applying a ventilation buffer sheet across the entire area before installing the 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 tube.”
This method can prevent the most common issue with waterproofing, which is bulging of the waterproof layer!
After explaining the materials and methods, we were entrusted with the project among four competing estimates!
Timing for Waterproofing Work
Already Experiencing Leaks
If leaks have already occurred, it is necessary to address the issue promptly before the damage spreads.
If left unattended, it can negatively impact the interior and underlying structures, so it is essential to stop the leaks quickly.
Bulging or Cracking of 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.
Growth of Moss or Mold
Moss or mold can develop due to the accumulation of moisture or rainwater.
This can be caused by inadequate drainage or sinking of the waterproof layer due to aging.
Exceeding the Durability Period
Generally, the durability period for waterproofing work is between 10 to 20 years.
Of course, the durability 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 type of waterproofing that involves applying liquid polyurethane resin to the waterproofing surface.
Since it is liquid before curing, it can be applied to complex shapes, and unlike sheet waterproofing, it can be installed without seams, which is a significant advantage.
It can be widely applied to 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 is a waterproofing method that 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, which, like rubber sheet waterproofing, 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, as well as 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 “anti-slip 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 capability.
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, as well as 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 hardening glass mat with epoxy resin to prevent rainwater intrusion.
It is commonly applied on 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 construction on large areas, making it less ideal for rooftops.
For more details on the advantages and disadvantages of FRP waterproofing, as well as 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 details 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 Chuo-ku, Tokyo. Among the numerous contractors, I believe there are many who feel “I don’t know who to ask for help…”. Choosing the right contractor can be challenging at first, so I will explain 5 points to consider when requesting waterproofing work.
● Have extensive experience in waterproofing work
● Confirm the existence of aftercare and warranty
● Obtain estimates from multiple contractors (at least 3 companies)
● Confirm whether they perform waterproofing work in-house
● Carefully check 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 if they have 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.
Some contractors showcase their achievements on social media platforms like Instagram, so checking those can also 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 is done, let’s confirm if they provide a “construction warranty“!
Contractors who offer a warranty are usually confident in their work, making them more trustworthy companies!
If waterproofing work is done, make sure to take photos of the 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 if they will conduct thorough aftercare maintenance!
Since non-specialized contractors may not notice signs of problems or troubles, having specialized contractors perform regular aftercare maintenance can help prevent issues before they occur!
Our company sends out aftercare maintenance DM every year, so if you wish, annual aftercare maintenance is possible!
Obtain estimates from multiple contractors (at least three)
When requesting waterproofing work, always get estimates from multiple contractors.
We recommend obtaining estimates from at least three 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 “types of materials used” and “construction methods” to compare the finer details!
Check if they perform waterproofing work in-house
Let’s confirm whether we carry out waterproofing work in-house!
If a sales company investigates and then requests a subcontractor, it can lead to extra time and costs.
Additionally, there may be instances where customer requests are not fully communicated to the subcontractor, which can lead to troubles.
By having one company handle everything from sales to construction, we can provide responsible waterproofing work that is both quick and cost-effective. Kakeru Koumuten Co., Ltd. conducts everything from on-site surveys to actual construction in-house!
Moreover, in the unlikely event of leaks or troubles, 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 for 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 for the same urethane waterproofing, there are different processes such as “adhesion method” and “ventilation 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 confirm what kind of materials they are!
If you are looking for a waterproofing contractor in Chuo-ku, Tokyo, please contact Kakeru Koumuten
Our company has handled many waterproofing projects in Chuo-ku, Tokyo.
Our greatest strength is that we can handle everything from proposals to temporary scaffolding setup 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 construction performance every year, and we will strive to improve quality to satisfy even more customers in the future.
We are also happy to handle small partial projects!
In addition to waterproofing work, we can carry out roofing work, exterior painting, and exterior cover methods, all 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 our company is found to be inferior to others, you are welcome to decline!
For information on exterior renovations in Chuo-ku, Tokyo, click here!
For information on exterior wall painting in Chuo-ku, Tokyo, click here!
For information on roof renovations in Chuo-ku, Tokyo, click here!
For information on leak repairs in Chuo-ku, Tokyo, click here!
Features of Chuo-ku, Tokyo
Chuo-ku is located in the heart of Tokyo and is known as an area where history and modernity blend together. During the Edo period, the urban infrastructure was developed under Tokugawa Ieyasu, and remnants of this history can still be seen in place names such as Nihonbashi and Kyobashi. Additionally, Chuo-ku is home to many long-established companies that continue to innovate while preserving tradition.
In modern times, Chuo-ku continues to develop as a center for commerce and finance. It is home to the Bank of Japan’s head office and the Tokyo Stock Exchange, playing a central role in economic activities. Furthermore, areas like Ginza and Tsukiji attract many tourists from both Japan and abroad.
Transportation is also very convenient, with multiple subway and JR lines intersecting, making access to various parts of the city easy. Thus, Chuo-ku is an attractive area that combines historical background with modern convenience.
Our company offers a wide range of waterproofing services in Chuo-ku. We can handle all exterior renovations, including waterproofing, roofing, and exterior painting, with our own staff.
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 Chuo-ku, Tokyo
Chuo-ku Akashicho / Chuo-ku Irifune / Chuo-ku Kachidoki / Chuo-ku Kyobashi / Chuo-ku Ginza / Chuo-ku Shinkawa / Chuo-ku Shintomi / Chuo-ku Tsukishima / Chuo-ku Tsukiji / Chuo-ku Tsukuda / Chuo-ku Toyoma-cho / Chuo-ku Nihonbashi / Chuo-ku Nihonbashi Odenma-cho / Chuo-ku Nihonbashi Kakigaracho / Chuo-ku Nihonbashi Kabuto-cho / Chuo-ku Nihonbashi Kayabacho / Chuo-ku Nihonbashi Koamicho / Chuo-ku Nihonbashi Kodenma-cho / Chuo-ku Nihonbashi Kobunacho / Chuo-ku Nihonbashi Tomizawa-cho / Chuo-ku Nihonbashi Nakasu / Chuo-ku Nihonbashi Ningyo-cho / Chuo-ku Nihonbashi Hakozaki-cho / Chuo-ku Nihonbashi Hamacho / Chuo-ku Nihonbashi Bakuro-cho / Chuo-ku Nihonbashi Hisamatsu-cho / Chuo-ku Nihonbashi Horidome-cho / Chuo-ku Nihonbashi Hon-cho / Chuo-ku Nihonbashi Muromachi / Chuo-ku Nihonbashi Yokoyama-cho / Chuo-ku Hatchobori / Chuo-ku Hamarikyu Gardens / Chuo-ku Harumi / Chuo-ku Higashi-Nihonbashi / Chuo-ku Minato / Chuo-ku Yaesu
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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！
