Leave Waterproofing Work in Kohoku-ku, Yokohama to Kakeru Koumuten Co., Ltd.!
If you are looking for a waterproofing contractor in Aoba-ku, Yokohama
Contact Kakeru Koumuten
Kakeru Koumuten is a company specializing in exterior renovations based in Yokohama.
We receive many requests for waterproofing work in Aoba-ku, Yokohama, ranging from single-family homes to apartment buildings.
“Reasons why Kakeru Koumuten is chosen in Aoba-ku”
“About the costs of waterproofing work”
“How to choose a waterproofing contractor”
“Subsidies and grants available for waterproofing work in Aoba-ku”
We will explain the above four points!
This will definitely be helpful for customers considering waterproofing work in Aoba-ku, Yokohama, so
please take a look!
Reasons why Kakeru Koumuten is chosen for waterproofing work in Aoba-ku, Yokohama
The reasons why our company is entrusted with waterproofing work by customers in Aoba-ku, Yokohama
One reason is that we have a base in Yokohama. However,
“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 be grateful 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 exterior renovations such as waterproofing at lower costs and faster speeds.
We have established five 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 reduce the costs associated with scaffolding work.
Since everything is done 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
In waterproofing work, various waste materials are generated.
Most contractors dispose of them all together, but by sorting and recycling 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 color tones.
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 qualified professionals on staff, and we are confident in our construction techniques.
We are capable of handling large-scale waterproofing projects such as factories!
4. Warranty and Aftercare
Waterproofing work comes with a guarantee!
Depending on the type of waterproofing work, we provide a 5 to 10-year leak warranty.
If you have any questions about the warranty, 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 annually, and we will send you a DM reminder for aftercare maintenance every 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 roof 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 problems, so we maintain a system where the representative does not change.
6. Human Resource Development
To enhance our skills, we create models of various buildings and conduct practical training.
We regularly provide technical training so that each staff member can handle various types of buildings.
Subsidies and Grants Related to Waterproofing Work in Kohoku-ku, Yokohama
If damage from natural disasters is recognized, it may be covered by fire insurance.
For waterproofing, potential damages considered as 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!
Property Tax Reduction System for Condominiums with Major Repairs (Condominium Longevity Promotion Tax System)
To promote the longevity of condominiums, for those that meet certain requirements, if major repairs contributing to longevity are conducted between April 1, 2023, and March 31, 2027, and necessary documents are submitted to the Tax Division of the Ward Office within three months of the completion of the work, there is a system that reduces the property tax amount for the following fiscal year by half for the relevant condominium.
Condominium Longevity Promotion Tax System
Yokohama City Official Website
About the Costs of Waterproofing Work
⇧Construction Menu｜For information on waterproofing costs, click here
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 buffer 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 roof, so I am worried about leaks. ・I would like 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. |
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 roof.
If urethane waterproofing is applied using a direct adhesion 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 installing the urethane waterproofing.
By applying the ventilation buffer sheet first, the air rising from the building is suppressed by the ventilation sheet and discharged through the “ventilation pipe.”
This can prevent the most common problem in waterproofing, which is bulging of 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 Have Already Occurred
If leaks have already occurred, it is necessary to address them promptly before the damage spreads.
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 area 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 accumulated 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 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 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 that involves applying liquid polyurethane resin onto 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, which is a significant advantage.
It can be widely applied to balconies, rooftops, and more.
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, which, like rubber sheet waterproofing, is applied to the surface to prevent water intrusion.
Like rubber sheets, it is not suitable for complex shapes. Although the cost is higher than rubber sheets and urethane waterproofing, its long durability is a significant advantage.
For more details on the advantages, disadvantages, and maintenance methods of PVC sheet waterproofing, please refer to the article below.
For waterproofing work | Click here for PVC sheet waterproofing work!
4. Long Sheet Waterproofing
Long sheet waterproofing, officially known as “anti-slip vinyl flooring sheet,” is commonly used in shared areas and stairs of apartments where people walk.
As the name suggests, it is slip-resistant and highly durable and abrasion-resistant, 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 apartment rooftops where people do not frequently enter.
For more details on the advantages, disadvantages, and maintenance methods of long sheet waterproofing, please refer to the article below.
For waterproofing work | Click here for long sheet waterproofing work!
5. FRP Waterproofing
FRP waterproofing involves creating a waterproof layer by solidifying glass mat with epoxy resin to prevent rainwater intrusion.
It is commonly used in single-family home balconies, with an overwhelmingly short construction period, often completed in just 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 surface areas, making it less appropriate for rooftops.
For more details on the advantages, disadvantages, and maintenance methods of FRP waterproofing, please refer to the article below.
Waterproofing Work | Click here for information on 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 type of waterproofing is used in large buildings 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 detailed explanations on the advantages, disadvantages, and maintenance methods of asphalt waterproofing, please refer to the article below.
Waterproofing Work | Click here for information on asphalt waterproofing!
How to Choose a Waterproofing Contractor
There are many waterproofing contractors available in Kohoku-ku, Yokohama.
Among the numerous contractors, I believe many people feel “I don’t know who to ask…”.
Choosing the right contractor can be challenging at first, so I will explain 5 points to be careful about when requesting waterproofing work.
● Have extensive experience in waterproofing work
● Confirm the presence of aftercare and warranty
● Obtain estimates from multiple contractors (at least 3 companies)
● Check if they perform waterproofing work in-house
● Carefully review the contents 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 reliable contractor with experience!
It is necessary 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 refer to review sites to look for waterproofing companies!
The review site we particularly recommend is “Google”.
Since contractors cannot delete low ratings on their own, it provides trustworthy 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 warranties tend to be more confident in their work, making them more trustworthy companies!
If waterproofing work is done, make sure to have photos taken of hidden areas during the process for confirmation!
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 detect issues early, confirm whether they will conduct thorough aftercare maintenance!
If a non-specialized contractor is involved, they may not notice signs of trouble, so having a specialized contractor perform regular aftercare maintenance can help prevent issues before they arise!
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-sales 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
Confirm whether they perform waterproofing work in-house!
If a sales company investigates and then requests a subcontractor, it will incur extra time and costs.
Moreover, there may be cases where customer requests are not 100% communicated to the subcontractor, leading to troubles.
By having one company handle everything from sales to construction, responsible waterproofing work can be done quickly and cost-effectively. Kakeru Koumuten handles everything from on-site surveys to actual construction in-house!
Furthermore, if leaks or troubles occur, a company that employs its own craftsmen can respond to and resolve issues quickly!
Carefully Check the Details of Waterproofing Estimates, Processes, and Materials
Even for the same waterproofing work, there are various types such as “methods,” “materials,” and “processes,” and it is necessary to carry out the work using the most suitable method and materials depending on the construction site 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 details are appropriate for the location!
It is important not to judge solely by cost, but to carefully check whether “the method is appropriate for the base material?” and “are the materials suitable?”
So, if the materials used are only “urethane waterproofing materials,” let’s confirm the product name and check what kind of materials they are!
If you are looking for a waterproofing contractor in Aoba-ku, Yokohama, please contact Kakeru Koumuten Co., Ltd.
Our company has handled many waterproofing projects in Aoba-ku, Yokohama.
Our greatest strength is that we can carry out everything from proposals to the installation of temporary scaffolding and waterproofing work in-house!
Kakeru Koumuten Co., Ltd. promises “high-quality waterproofing work at low cost”, and we have received great feedback from many customers.
We continue to update our construction performance every year, and we will strive to improve quality so that even more customers can be satisfied in the future.
We are happy to accommodate even small partial works!
In addition to waterproofing work, we can carry out all exterior renovations, including roofing work, exterior wall painting, and exterior wall overlay methods, in-house.
We are confident that we will not be outdone by other companies in terms of cost, quality, and efficiency in 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!
Click here for exterior renovations in Aoba-ku, Yokohama!
Click here for exterior wall painting in Aoba-ku, Yokohama!
Click here for roofing renovations in Aoba-ku, Yokohama!
Click here for exterior wall overlay work in Aoba-ku, Yokohama!
Click here for leak repairs in Aoba-ku, Yokohama!
Features of Aoba-ku, Yokohama
Aoba-ku is located in the northeastern part of Yokohama City, an area where vibrant urban functions coexist with a rich living environment.
This area is particularly developed within Yokohama City, and its balance of transportation access, commercial facilities, educational environment, and residential neighborhoods makes it popular among a wide range of generations. In terms of transportation, multiple railway lines run through the area, providing convenient access to the city center and major areas within Yokohama, and with major expressways also well-maintained, traveling by car is comfortable.
Regarding commercial facilities, there are large shopping malls and local shopping streets that are well-equipped, allowing for a wide range of shopping experiences from daily necessities to trendy items. Additionally, Kohoku Ward has many educational institutions, making it an ideal environment for families raising children.
Furthermore, the ward is home to many lush parks and walking paths, offering the charm of experiencing nature while enjoying urban conveniences. Historically, it thrived as a post town along the old highway, and there are various landscapes and facilities that evoke the region’s culture and traditions.
The residential areas offer a diverse range of apartments and single-family homes, accommodating various lifestyles from young generations to the elderly. The presence of a culturally diverse population is also a characteristic feature, allowing residents to enjoy a global atmosphere. Thus, Kohoku Ward is an attractive area where urban convenience, nature, history, and diversity blend together, making it an ideal place to live or visit.
If you live in Kohoku Ward and have any concerns regarding waterproofing work or issues related to your home, please feel free to contact us!
Waterproofing Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
List of Areas in Kohoku Ward, Yokohama
Kikuna, Kohoku Ward, Yokohama / Kishinecho, Kohoku Ward, Yokohama / Kozukuecho, Kohoku Ward, Yokohama / Shinoharakita, Kohoku Ward, Yokohama / Shinoharadai, Kohoku Ward, Yokohama / Shinoharacho, Kohoku Ward, Yokohama / Shinoharanishimachi, Kohoku Ward, Yokohama / Shinohara Higashi, Kohoku Ward, Yokohama / Shimodacho, Kohoku Ward, Yokohama / Shin-Yokohama, Kohoku Ward, Yokohama / Shin-Yoshida, Kohoku Ward, Yokohama / Takadacho, Kohoku Ward, Yokohama / Tarumachi, Kohoku Ward, Yokohama / Tsunashima Kamimachi, Kohoku Ward, Yokohama / Tsunashima Dai, Kohoku Ward, Yokohama / Tsunashima Nishi, Kohoku Ward, Yokohama / Tsunashima Higashi, Kohoku Ward, Yokohama / Toriyamacho, Kohoku Ward, Yokohama / Nakatehara, Kohoku Ward, Yokohama / Nishinagaoka, Kohoku Ward, Yokohama / Shin-Hane, Kohoku Ward, Yokohama / Hiyoshi, Kohoku Ward, Yokohama / Hiyoshi Honcho, Kohoku Ward, Yokohama / Fujizuka, Kohoku Ward, Yokohama / Mameidocho, Kohoku Ward, Yokohama / Minowa, Kohoku Ward, Yokohama / Morioka, Kohoku Ward, Yokohama / Ozone, Kohoku Ward, Yokohama / Ozone Dai, Kohoku Ward, Yokohama / Takada Higashi, Kohoku Ward, Yokohama / Takada Nishi, Kohoku Ward, Yokohama / Shin-Yoshida Higashi, Kohoku Ward, Yokohama / Kita Shin-Yokohama, Kohoku Ward, Yokohama / Okurayama, Kohoku Ward, Yokohama
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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！
