If you are looking for a waterproofing contractor in Kanazawa-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 Kanazawa-ku, from single-family homes to apartment buildings.
“Reasons why Kakeru Koumuten is chosen in Kanazawa-ku”
“About the costs of waterproofing work”
“How to choose a waterproofing contractor”
“About subsidies and grants available for waterproofing work in Kanazawa-ku”
We will explain the above four points!
This will definitely be helpful for customers considering waterproofing work in Kanazawa-ku, Yokohama, so
please take a look!
目次
- 1 Reasons why Kakeru Koumuten is chosen for waterproofing work in Kanazawa-ku, Yokohama
- 2 Subsidies and Grants for Waterproofing Work in Kanazawa-ku, Yokohama
- 3 About the Costs of Waterproofing Work
- 4 Customer Testimonials
- 5 Waterproofing Work Case Studies
- 6 Timing for Waterproofing Work
- 7 Types of Waterproofing Work
- 8 How to Choose a Waterproofing Contractor
- 8.1 Check if they have extensive experience in waterproofing work
- 8.2 Check if there is aftercare maintenance and construction warranty
- 8.3 Obtain estimates from multiple contractors (at least three)
- 8.4 Confirm if they perform waterproofing work in-house
- 8.5 Carefully Check the Details of the Waterproofing Estimate, Process, and Materials
- 9 If you are looking for a waterproofing contractor in Kanazawa-ku, Yokohama, please contact Kakeru Koumuten Co., Ltd.
- 10 Features of Kanazawa-ku, Yokohama
Reasons why Kakeru Koumuten is chosen for waterproofing work in Kanazawa-ku, Yokohama
The reasons why our company is entrusted with waterproofing work by customers in Kanazawa-ku, Yokohama include
one reason being that we have a base in Yokohama,
and our unique strengths in waterproofing work that cannot be imitated by other companies, which have received high praise from many customers.
We are absolutely confident 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 organized the following warehouses and material storage areas to provide exterior renovations such as waterproofing at lower costs and faster speeds.
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
In waterproofing work, various waste materials are generated.
Most contractors dispose of them all together, but by sorting and recycling 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 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 project 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 as well as 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 those for 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 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 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 our company has a system in place to maintain the same representative.
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 for Waterproofing Work in Kanazawa-ku, Yokohama
Currently, there are no subsidies or grants available for waterproofing work in Kanazawa-ku, Yokohama.
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 Costs of Waterproofing Work
⇧ For construction menu | Click here for waterproofing work 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 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 rooftop, so we are worried 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. |
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 the 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 applying urethane waterproofing.
By applying the ventilation buffer sheet first, air rising from the building is suppressed by the ventilation sheet and expelled 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, 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 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.
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.
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.
Exceeding the Durability Period
Generally, the durability period for waterproofing work is 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 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 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, 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, 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. While the cost is higher than rubber sheets and urethane waterproofing, its long durability is a significant advantage.
We provide detailed explanations about the advantages and disadvantages of PVC sheet waterproofing, as well as maintenance methods, in 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 floor sheet,” is commonly applied in shared areas and staircases of condominiums 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 performance.
It is rarely used in areas like the rooftops of condominiums where people do not frequently enter.
We provide detailed explanations about the advantages and disadvantages of long sheet waterproofing, as well as maintenance methods, in 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 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 areas with complex shapes, making it less ideal for rooftop applications.
We provide detailed explanations about the advantages and disadvantages of FRP waterproofing, as well as maintenance methods, in 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 Kanazawa-ku, Yokohama.
Among the numerous contractors, there are likely many who feel, “I don’t know where to turn to…”
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 existence of aftercare and warranty
● Obtain estimates from multiple contractors (at least 3 companies)
● Check if the contractor performs 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 if they have extensive experience in waterproofing work
About 10-20% of waterproofing construction troubles are caused by poor workmanship during installation.
To prevent troubles, it is important to hire a reliable contractor with experience!
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 construction companies on review sites for reference!
The review site we particularly recommend is “Google”.
Since contractors cannot arbitrarily delete low ratings, 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 is done, let’s confirm if they provide a “construction warranty”!
Contractors who offer a warranty tend to have confidence in their work, making them more trustworthy companies!
If waterproofing work is done, make sure to take photos 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!
Additionally, to ensure early detection of any issues that may arise, confirm whether they will conduct thorough aftercare maintenance!
Since non-specialized contractors may not notice signs of problems or troubles, 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 can be arranged!
Obtain estimates from multiple contractors (at least three)
When requesting waterproofing work, be sure to obtain 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.
Moreover, 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
Check if they perform waterproofing construction in-house!
If a sales company investigates and then requests a subcontractor, it will incur additional time and costs.
Also, there may be cases where the customer’s requests are not fully communicated to the subcontractor, leading to troubles.
By having one company handle everything from sales to construction, responsible waterproofing work can be carried out quickly and cost-effectively. Kakeru Koumuten conducts everything from on-site surveys to actual construction in-house!
Additionally, if any leaks or troubles occur, a company that has its own craftsmen can respond to and resolve issues quickly!
Carefully Check the Details of the Waterproofing Estimate, Process, and Materials
Even for the same waterproofing work, there are various types such as “method,” “materials,” and “process,” 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 like “high-strength specification,” “heat-insulating specification,” and “anti-slip specification,” so 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 base material?” and “are the materials suitable?”
Therefore, 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 Kanazawa-ku, Yokohama, please contact Kakeru Koumuten Co., Ltd.
Our company has handled many waterproofing projects in Kanazawa-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 promises “high-quality waterproofing work at low cost”, and we have received high praise from many customers.
We continue to update our construction performance every year, and we will strive to improve quality so that even more customers will be satisfied in the future.
We are also happy to handle small partial projects!
In addition to waterproofing work, we can perform all exterior renovations, including roof work, exterior painting, and exterior cover methods, 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 exterior renovations in Kanazawa-ku, Yokohama, click here!
For exterior painting in Kanazawa-ku, Yokohama, click here!
For roof renovations in Kanazawa-ku, Yokohama, click here!
For exterior cover work in Kanazawa-ku, Yokohama, click here!
For leak repairs in Kanazawa-ku, Yokohama, click here!
Features of Kanazawa-ku, Yokohama
Located in the southeastern part of Yokohama City, Kanazawa-ku is an area with a beautiful coastline facing Tokyo Bay and lush hilly terrain!
Historically, it was a thriving port and fishing area, but in recent years, it has developed into a region with abundant coastal tourist spots and leisure facilities, as well as various features such as industrial zones and residential areas.
Our company offers a wide range of roofing services in Kanazawa-ku. We handle roof replacement, roof overlay (cover method), and leak repairs, among other services.
Please feel free to consult us if you have any concerns!
Waterproofing Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
Areas in Kanazawa-ku, Yokohama
Ashibanacho, Kanazawa-ku, Yokohama / Uminokouen, Kanazawa-ku, Yokohama / Okawa, Kanazawa-ku, Yokohama / Otsuhomachi, Kanazawa-ku, Yokohama / Katabuki, Kanazawa-ku, Yokohama / Kanazawacho, Kanazawa-ku, Yokohama / Kamaritani, Kanazawa-ku, Yokohama / Kamaritani Nishi, Kanazawa-ku, Yokohama / Kamaritani Higashi, Kanazawa-ku, Yokohama / Kamaritani Minami, Kanazawa-ku, Yokohama / Saiura, Kanazawa-ku, Yokohama / Shibacho, Kanazawa-ku, Yokohama / Showacho, Kanazawa-ku, Yokohama / Shiraho, Kanazawa-ku, Yokohama / Suzaki-machi, Kanazawa-ku, Yokohama / Seto, Kanazawa-ku, Yokohama / Takafunadai, Kanazawa-ku, Yokohama / Daido, Kanazawa-ku, Yokohama / Teramae, Kanazawa-ku, Yokohama / Dorokame, Kanazawa-ku, Yokohama / Tominokanishi, Kanazawa-ku, Yokohama / Tominokahigashi, Kanazawa-ku, Yokohama / Torihamacho, Kanazawa-ku, Yokohama / Nagahama, Kanazawa-ku, Yokohama / Namiki, Kanazawa-ku, Yokohama / Nishishiba, Kanazawa-ku, Yokohama / Nokeidai-dori, Kanazawa-ku, Yokohama / Nokeidai Higashi, Kanazawa-ku, Yokohama / Nokeidai Mori, Kanazawa-ku, Yokohama / Nokeidai, Kanazawa-ku, Yokohama / Nojimacho, Kanazawa-ku, Yokohama / Hakkeijima, Kanazawa-ku, Yokohama / Higashi Ashibanacho, Kanazawa-ku, Yokohama / Hiragatacho, Kanazawa-ku, Yokohama / Fukuura, Kanazawa-ku, Yokohama / Horiguchi, Kanazawa-ku, Yokohama / Machiyacho, Kanazawa-ku, Yokohama / Mizuki-cho, Kanazawa-ku, Yokohama / Mutsuura-cho, Kanazawa-ku, Yokohama / Mutsuura Higashi, Kanazawa-ku, Yokohama / Mutsuura Minami, Kanazawa-ku, Yokohama / Mutsuura, Kanazawa-ku, Yokohama / Yatsucho, Kanazawa-ku, Yokohama / Yanagicho, Kanazawa-ku, Yokohama
Consultations via LINE are also very welcome◎
We are also regularly updating our Instagram◎ Please follow us◎
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!
