If you are looking for a waterproofing contractor in Minami-ku, Sagamihara,
come to Kakeru Koumuten
Kakeru Koumuten is a company specializing in exterior renovations based in Kanagawa Prefecture.
We receive many requests for waterproofing work in Minami-ku, Sagamihara, ranging from single-family homes to apartment buildings.
“Reasons why Kakeru Koumuten is chosen in Minami-ku, Sagamihara”
“About the costs of waterproofing work”
“How to choose a waterproofing contractor”
“About subsidies and grants applicable to waterproofing work in Minami-ku, Sagamihara”
We will explain the above four points!
This will definitely be helpful for customers considering waterproofing work in Minami-ku, Sagamihara, so
please take a look!
Reasons why Kakeru Koumuten is chosen for waterproofing work in Minami-ku, Sagamihara
Regarding why our company is entrusted with waterproofing work by customers in Minami-ku, Sagamihara,
one reason is that we have a base in Kanagawa Prefecture, but
“Our strengths in waterproofing work that cannot be imitated by other companies”
are well-received by 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.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 more affordably and more quickly.
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 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 procure materials at a lower cost! Additionally, we always have waterproofing components in stock, allowing us to respond quickly to emergency waterproofing work!
In-house separation 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 structures and colors available.
2．Complete In-House Construction
One of Kakeru Koumuten’s major strengths is our complete in-house construction.
From inquiry to project completion, everything is handled by Kakeru Koumuten Co., Ltd., allowing 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 project. Since the same person will handle sales and construction management, smooth communication is ensured. 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 personnel 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
Our waterproofing work comes with a warranty! 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 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 and confirm the deterioration status.
5. Flexible and Prompt Response
Our company is equipped to handle various troubles and situations.
If you are unable to access the rooftop for waterproofing checks, we will utilize drones to assess the condition. During leak investigations, we can also conduct surveys 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 construction, which may cause issues. Therefore, our company maintains a system where the representative remains the same.
6. Human Resource Development
To enhance skills, we create various building models and conduct practical training. We regularly provide skill enhancement education so that each staff member can handle various buildings.
Possible Subsidies and Grants for Waterproofing Work in Minami-ku, Sagamihara Subsidies and Grants
Condominium Longevity Promotion Tax Reduction (Fixed Asset Tax Reduction)
Requirements for Condominium Longevity Promotion Tax Reduction
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 developed or reviewed a long-term repair plan with advice and guidance from the local government
The residential floor area of the exclusive part occupies more than 50% of the total
Tax Reduction Details
Eligible: Fixed asset tax on the building portion imposed in the fiscal year following the completion of the work
Maximum Reduction: Up to equivalent to 100㎡ per unit
Tax Reduction Rate: The tax amount within the above range is reduced by 1/2 (50%)
Others
Considerations for waterproofing as damage from natural disasters may include “holes in waterproof sheets caused by flying objects or falling debris due to wind disasters.”
If you are unsure whether it is covered by fire insurance, please feel free to contact us!
About the Cost of Waterproofing Work
⇧ Service 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
工事内容
Rooftop urethane waterproofing work (ventilated buffer method)
Ventilation sheet: QV sheet
We received an inquiry from a customer living in Shibuya-ku, Tokyo, stating, “I am concerned about the deterioration of my rooftop, so I am considering waterproofing work. I would like to request a quote first.”
Our Proposal
This time, since the customer wanted to renovate using a long-lasting method rather than just protective agents like topcoats, we proposed waterproofing work using a ventilation buffer method with high-strength urethane.
Timing for Waterproofing Work
Already Experiencing Leaks
If leaks have already occurred, it is necessary to address them promptly before the damage expands.
If left unattended, it can negatively affect the interior and underlying structures, so it is essential to stop the leaks quickly.
Bloating or Cracking of the Waterproof Layer
If the waterproof section is cracked, it can cause rainwater to enter.
If the waterproof layer is bloated, it indicates that moisture is accumulating inside the waterproof layer.
Bloating 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.
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 (topcoat) after about 8 years (such as urethane waterproofing or FRP waterproofing).
We recommend regular inspections starting from 5 years after construction.
It is important to understand the type of existing waterproofing and perform appropriate maintenance.
If you are unsure of the type of waterproofing, please send us a photo via email or LINE inquiry, 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 remains 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 waterproofing work | Click here for Urethane Waterproofing!
2. Rubber Sheet Waterproofing
Rubber sheet waterproofing involves attaching synthetic rubber sheets to the surface to prevent water intrusion.
This method is commonly used for 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 waterproofing work | Click here for Rubber Sheet Waterproofing!
3. PVC Sheet Waterproofing
PVC sheet waterproofing uses waterproof sheets made of polyvinyl chloride, and like rubber sheet waterproofing, it prevents water intrusion by adhering sheets to the surface.
Similar to rubber sheets, it is not suitable for complex shapes. Although it is more expensive than rubber sheets and urethane waterproofing, its 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.
Waterproofing Work | Click here for information on PVC Sheet Waterproofing!
4. Long Sheet Waterproofing
Long sheet waterproofing, officially known as “slip-resistant vinyl floor sheet,” is commonly installed in areas where people walk, such as shared spaces and staircases in condominiums.
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 sheet waterproofing, it may give a slightly lower impression of waterproofing capability.
It is rarely used in areas like the rooftops of condominiums where people do not frequently enter and exit.
For more details on the advantages, disadvantages, and maintenance methods of long sheet waterproofing, please refer to the article below.
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 installed on single-family home balconies, with an overwhelmingly short construction period, often completed in as little as one day.
Due to its lightweight and cost-effectiveness, it seems that about 80% of single-family home balconies utilize FRP waterproofing.
However, it is not suitable for installation on large surface areas, making it inappropriate for rooftop applications.
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 refers to 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 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 benefit is its high durability.
For detailed explanations of the advantages, disadvantages, and maintenance methods of asphalt waterproofing, please refer to the article below.
Waterproofing Work | Learn more about Asphalt Waterproofing Work here!
How to Choose a Waterproofing Contractor
There are many waterproofing contractors available in Minami-ku, Sagamihara.
Among the numerous contractors, I believe many people 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 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 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 the construction process.
To prevent troubles, it is important to hire a reliable contractor with extensive experience!
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 construction companies using review sites for reference!
A particularly recommended review site is “Google”, as contractors cannot delete low ratings on their own, making it a trustworthy source of 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 completed, let’s confirm if they provide a “construction warranty“!
Contractors who offer warranties are usually confident in their workmanship, making them more trustworthy companies!
If waterproofing work is done, make sure to take photos of hidden areas during the process for verification!
Check for leaks during rainy weather after the waterproofing work, and if there are any issues, contact the contractor immediately, as this will ensure smooth communication shortly after the construction!
Additionally, to detect any issues early, confirm whether they provide thorough aftercare maintenance!
Since non-specialized contractors may not notice early signs of defects or troubles, having a specialized contractor conduct regular aftercare maintenance can help prevent issues before they arise!
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, be sure to obtain estimates from multiple contractors. We recommend obtaining estimates from at least three companies.
The costs may vary among contractors even for the same waterproofing work, and there may be differences in warranties and after-sales services.
Moreover, obtaining multiple estimates makes it easier to negotiate prices. To request at the lowest possible cost, it is essential to obtain estimates from several contractors. When comparing estimates, be sure to check not only the costs but also the “types of materials used” and “construction methods” to compare the details!
Check if they perform waterproofing work in-house
Confirm whether they conduct waterproofing work 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!
In the unlikely event of a leak or trouble, having a company that employs its own craftsmen allows for quick responses and resolutions to any issues!
Carefully check the details, processes, and materials used in waterproofing estimates
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 with the optimal 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 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 Minami-ku, Sagamihara, please contact Kakeru Koumuten Co., Ltd.
Our company has handled many waterproofing projects in Minami-ku, Sagamihara. Our greatest strength is that we can carry out everything from proposals to temporary scaffolding installation 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 to satisfy even more customers in the future.
We are also happy to handle small partial projects!
In addition to waterproofing work, we can perform 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 are confident, so we welcome competitive estimates! Our estimates are completely free, and if you find that we are inferior to other companies, feel free to decline!
For information on exterior renovations in Minami-ku, Sagamihara, click here!
For information on exterior wall painting in Minami-ku, Sagamihara, click here!
For information on roofing renovations in Minami-ku, Sagamihara, click here!
For information on leak repairs in Minami-ku, Sagamihara, click here!
Characteristics of Minami-ku, Sagamihara
Minami-ku, Sagamihara City, Kanagawa Prefecture, is located in the southeastern part of the city and is an area where commerce, housing, and industry have developed in a balanced manner. Centered around Sagami-Ono, there are large commercial facilities and medical institutions, and with the JR Yokohama Line and Odakyu Line running through, access to Yokohama and Tokyo is also excellent.
In the area, there are vast recreational facilities such as Sagamihara Asamizodai Park and Sagamihara Gion Stadium, surrounded by a lush green environment. Additionally, it is known as an educational district, attracting many educational institutions, making it a popular area for families raising children.
Our company offers a wide range of exterior construction services in Minami-ku, Sagamihara. We handle waterproofing, roofing, and exterior wall painting work.
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.
List of Areas in Minami-ku, Sagamihara
Asahimachi, Minami-ku, Sagamihara / Asamizodai, Minami-ku, Sagamihara / Shinisono, Minami-ku, Sagamihara / Isobe, Minami-ku, Sagamihara / Unomori, Minami-ku, Sagamihara / Ohnodai, Minami-ku, Sagamihara / Kamitsuruma, Minami-ku, Sagamihara / Kamitsuruma Honcho, Minami-ku, Sagamihara / Kitasato, Minami-ku, Sagamihara / Kobuchi, Minami-ku, Sagamihara / Sakaemachi, Minami-ku, Sagamihara / Sagami-Ono, Minami-ku, Sagamihara / Sagamidai Danchi, Minami-ku, Sagamihara / Sagamidai, Minami-ku, Sagamihara / Sakuradai, Minami-ku, Sagamihara / Shimomizo, Minami-ku, Sagamihara / Shindo, Minami-ku, Sagamihara / Aoin, Minami-ku, Sagamihara / Sobudai Danchi, Minami-ku, Sagamihara / Sobudai, Minami-ku, Sagamihara / Toma, Minami-ku, Sagamihara / Nishi-Onuma, Minami-ku, Sagamihara / Higashi-Onuma, Minami-ku, Sagamihara / Higashi-Rinkan, Minami-ku, Sagamihara / Futaba, Minami-ku, Sagamihara / Bunkyo, Minami-ku, Sagamihara / Matsugae-cho, Minami-ku, Sagamihara / Misono, Minami-ku, Sagamihara / Minami-dai, Minami-ku, Sagamihara / Toyomachi, Minami-ku, Sagamihara / Wakamatsu, Minami-ku, Sagamihara
We also welcome consultations via LINE◎
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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!
