Leave your waterproofing work in Nishitama-gun, Tokyo to Kakeru Koumuten Co., Ltd.!
If you are looking for a waterproofing contractor in Nishitama-gun, Tokyo,
come to Kakeru Koumuten.
Kakeru Koumuten specializes in exterior renovations.
We receive many requests for waterproofing work for both single-family homes and apartment buildings in Nishitama-gun, Tokyo.
“Reasons why Kakeru Koumuten is chosen in Nishitama-gun, Tokyo”
“About the costs of waterproofing work”
“How to choose a waterproofing contractor”
“Subsidies and grants available for waterproofing work in Nishitama-gun, Tokyo”
We will explain the above four points!
This will definitely be helpful for customers considering waterproofing work in Nishitama-gun, Tokyo, so
please take a look!
Reasons why Kakeru Koumuten is chosen for waterproofing work in Nishitama-gun, Tokyo
Regarding the reasons why our company can be entrusted with waterproofing work by customers in Nishitama-gun, Tokyo,
“Our strengths in waterproofing work that cannot be imitated by other companies” have received high praise from many customers.
In waterproofing work in Nishitama-gun, Tokyo,
we have absolute confidence in “cost,” “quality,” and “plans,” so
we would appreciate it if you could compare our estimates with those of other companies.
Because we are confident, we welcome competitive estimates!
1．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 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 not outsourcing scaffolding work and using our own scaffolding team, we can also cut costs associated with scaffolding work.
Since everything is done in-house, we can significantly reduce costs through shorter construction periods!
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!
Sorting of waste materials in-house
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 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., 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 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 permits for construction work and industrial waste collection and transportation!
We also have qualified personnel on staff and are confident in our construction techniques.
We can handle 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 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 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 may cause issues, so our company maintains a system where the representative remains the same.
6. Human Resource Development
To enhance our skills, we create various building models and conduct practical training.
We regularly provide technical training to ensure that each staff member can handle various types of buildings.
Subsidies and Grants Related to Waterproofing Work in Nishitama-gun, Tokyo
If damage from natural disasters is recognized, it may be covered by fire insurance.
Considerations for waterproofing damage due to natural disasters may include “holes in waterproof sheets caused by flying objects or falling debris from wind damage.”
If you are unsure whether it is covered by fire insurance, please feel free to contact us!
Regarding the Property Tax Reduction Measures Associated with Large-Scale Renovation Work for Condominiums in Mizuho Town
For details on the property tax reduction measures applicable through this declaration, please refer to the information below.
Property Tax Reduction Measures Associated with Large-Scale Renovation Work for Condominiums
Mizuho Town, Nishitama-gun, Tokyo Official Website
◎ For other municipalities, please check their respective websites. If you have any questions, feel free to contact us!
Hinode Town, Nishitama-gun, Tokyo Official Website
Hinohara Village, Nishitama-gun, Tokyo Official Website
Okutama Town, Nishitama-gun, Tokyo 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 we are worried about leaks. ・We would like an estimate for a complete waterproof renovation, not just partial repairs or a top coat. ・We learned that urethane waterproofing has high waterproofing properties, so we would like an estimate for urethane waterproofing. ・Since this is our first waterproofing project, we would like to compare estimates. |
Our Proposal
Since you expressed a desire to renovate using a long-lasting method rather than protective agents like top coats, we proposed a complete “urethane waterproofing project” for the roof.
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 installing the urethane waterproofing.
By applying the ventilation buffer sheet first, the air rising from the building is controlled by the ventilation sheet and expelled through the “ventilation pipe.”
This can prevent the most common problem in waterproofing: bulging of the waterproof layer!
After explaining the materials and methods, you entrusted the project to us among the four 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 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.
Before curing, it is in liquid form, allowing it to be applied to complex shapes, and unlike sheet waterproofing, it can be applied 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 attaching synthetic rubber sheets to the surface to prevent water intrusion.
This type of waterproofing is often used on large areas such as rooftops.
Compared to urethane waterproofing, it has the advantage of faster installation since there is no waiting for drying, but it is not suitable for complex surfaces.
For more details on the advantages, disadvantages, and maintenance methods of rubber sheet waterproofing, please refer to the article below.
For more on waterproofing work | Rubber sheet waterproofing, click here!
3. PVC Sheet Waterproofing
PVC sheet waterproofing is a waterproof sheet made of polyvinyl chloride, and like rubber sheet waterproofing, it is applied to the surface to prevent water intrusion.
Similar to rubber sheets, it is not suitable for complex shapes. Although the cost is higher than rubber sheets and urethane waterproofing, its long durability is an 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 floor sheet,” is often applied in common 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 have a slightly lower impression of waterproofing capability.
It is rarely used in areas like the rooftops of apartments where people do not 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 hardening glass mat with epoxy resin to prevent rainwater intrusion.
It is commonly applied in single-family home balconies, with an overwhelmingly short construction period, 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 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 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 detailed explanations 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 Nishitama-gun, Tokyo.
Among the numerous contractors, I believe there are many people who feel, “I don’t know who to ask…”.
Choosing a contractor for the first time can be challenging, 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 they perform waterproofing work in-house
● Carefully review the contents of the waterproofing estimate, process, 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!
You should refer to the contractor’s website for their construction achievements and reviews to make a judgment.
There are also contractors who showcase their achievements on social media platforms like Instagram, so checking those can be effective!
It is also effective to look at waterproofing companies using review sites for reference!
A particularly recommended review site 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 completed, let’s confirm whether they provide a “construction warranty“!
Contractors who offer warranties tend to be more confident in their work, making them more trustworthy!
If waterproofing work is done, make sure to have photos taken of hidden areas and check them!
Check for leaks during rainy weather after the waterproofing work, and if there are any issues, contact the contractor immediately, as it will facilitate smooth communication shortly after the work is completed!
Also, to ensure early detection of any issues that may arise, confirm whether they conduct thorough aftercare maintenance!
Since non-specialized contractors may not notice 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 is possible!
Obtain estimates from multiple contractors for waterproofing work (at least 3 companies)
When requesting waterproofing work, be sure to obtain estimates from multiple contractors.
We recommend obtaining estimates from at least 3 companies.
Even for the same waterproofing work, costs may vary between contractors, and warranties and after-services may differ as well.
Additionally, obtaining multiple estimates makes price negotiations easier. To request at the lowest possible price, it is essential to obtain estimates from several contractors.
When comparing estimates, check not only the costs but also the “types of materials used” and “construction methods,” and compare the 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 fully 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, in the event of leaks or troubles, if the company has its own craftsmen, they 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 based on the construction location and existing substrate.
For example, even with the same urethane waterproofing, there are different types of processes such as “adhesion method” and “ventilated buffer method,” and there are various types of urethane waterproofing materials, including “high-strength specifications,” “heat-insulating specifications,” and “anti-slip specifications.” Therefore, it is essential to confirm whether the construction content is appropriate for the location!
It is important not to judge solely based on cost, but to carefully check whether “the method is appropriate for the substrate?” and “are the materials suitable?”
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 Nishitama-gun, Tokyo, please contact Kakeru Koumuten Co., Ltd.
Our company has handled many waterproofing projects in Nishitama-gun, Tokyo.
Our greatest strength is that we can handle everything from proposals to temporary scaffolding installation and waterproofing work in-house!
Kakeru Koumuten Co., Ltd. promises “high-quality waterproofing work at low cost”, and we have received great 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 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 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 Nishitama-gun, Tokyo, click here!
For exterior wall painting in Nishitama-gun, Tokyo, click here!
For roofing renovations in Nishitama-gun, Tokyo, click here!
For leak repairs in Nishitama-gun, Tokyo, click here!
Characteristics of Nishitama-gun, Tokyo
Nishitama-gun is located in the western part of Tokyo and consists of four municipalities: Mizuho Town, Hinode Town, Hinohara Village, and Okutama Town. Each has a rich natural environment and unique charm.
Mizuho Town: Located in the northwestern part of the Tama region, it is a town with a flat terrain. It is about 40 km from central Tokyo and is well-connected to the city via the JR Hachiko Line and Seibu Haijima Line. The town has natural spots such as Sayama Pond Park and Rokudo Mountain Park, where you can enjoy seasonal landscapes.
Hinode Town: Located in the western part of the Tama region, it is a nature-rich town surrounded by mountains. The nearest stations are Musashi-Masuko Station and Musashi-Itsukaichi Station on the JR Itsukaichi Line, making access from the city center relatively convenient. The town features tourist spots such as “Tsurutsuru Onsen” and “Hinode Mountain,” where visitors can enjoy hiking and hot springs.
Hinohara Village: The only village in Tokyo, it is situated at the westernmost edge of the Tama region. Approximately 93% of the village area is covered by forests, and the natural environment is protected as part of the Chichibu-Tama-Kai National Park. The village has attractions like “Harizawa Falls” and “Hinohara Tokyo Citizens’ Forest,” allowing visitors to enjoy nature throughout the seasons. Public transportation is limited, but it can be accessed by bus from Musashi-Itsukaichi Station on the JR Itsukaichi Line.
Okutama Town: Located at the westernmost point of Tokyo, it is the largest municipality in the city by area. The town is known for Okutama Lake, an artificial lake, and Mount Kumotori, the highest peak in Tokyo (elevation 2,017m), making it a hub for outdoor activities such as hiking and camping. Okutama Station, the terminus of the JR Ome Line, serves as the central access point, allowing for convenient travel from the city center.
Each municipality in Nishitama District boasts rich natural environments and unique tourist attractions, making it an ideal area for day trips and weekend leisure, with good access from the city center.
Our company offers a wide range of waterproofing services in Nishitama District. We can handle all exterior renovations, including waterproofing, roofing, and exterior painting, with our own skilled team.
If you have any concerns, please feel free to consult with us!
Waterproofing Service Areas
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
Nishitama District, Tokyo Area List
Mizuho Town
Mizuho Town Ishihata / Mizuho Town Komagat富士山 / Mizuho Town Takane / Mizuho Town Tono-Gaya / Mizuho Town Nagaoka Shimo-Morioka / Mizuho Town Nagaoka Hasebe / Mizuho Town Nagaoka Fujihashi / Mizuho Town Nagaoka / Mizuho Town Nihonki / Mizuho Town Hakonegasaki / Mizuho Town Hakonegasaki Nishimatsubara / Mizuho Town Hakonegasaki Higashimatsubara / Mizuho Town Fujisan Kurihara Shinden / Mizuho Town Minamihei / Mizuho Town Musashi / Mizuho Town Musashino
Hinode Town
Hinode Town Okuno / Hinode Town Hirai
Hinohara Village
Hinohara Village Ozawa / Hinohara Village Kazuma / Hinohara Village Kobe / Hinohara Village Kamimoto / Hinohara Village Kurakake / Hinohara Village Shimomoto / Hinohara Village Nango / Hinohara Village Hirazato / Hinohara Village Fujiwara / Hinohara Village Hitosato / Hinohara Village Mitosato / Hinohara Village Honjuku
Okutama Town
Okutama Town Umizawa / Okutama Town Umezawa / Okutama Town Ootanba / Okutama Town Kawai / Okutama Town Kawano / Okutama Town Kawachi / Okutama Town Kodanba / Okutama Town Sakae / Okutama Town Shirawara / Okutama Town Tanazawa / Okutama Town Dansaburo / Okutama Town Tameura / Okutama Town Hibara / Okutama Town Hara / Okutama Town Koori
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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！
