Hello!
This is Yamanaka from Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior wall painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
This is a case study of an exterior renovation in Asao-ku, Kawasaki City, Kanagawa Prefecture.
There are several types of exterior renovations, and this project includes roof replacement (Hiranbi 220), joint replacement, and exterior wall painting!
We implemented measures against leaks through the roofing work!
On this page, I will explain the actual results of the work carried out by Kakeru Koumuten!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.
Roof Replacement Construction Procedure
1. Existing Roof Material Demolition
2. New Sheathing Installation
3. Roofing Installation (Waterproof Sheet)
It is made of modified asphalt roofing material, which is said to have double the durability of regular asphalt roofing.
As a primary waterproofing measure, if the roofing is properly installed, there will be no leaks!
We will ensure it is securely attached to prevent it from blowing away.
4. Custom Fabrication (Decorative Trim)
The materials used for the trims are Galvalume steel sheets.
4. Main Construction (Inagaki Shouji / Hiranbee)
Once the roofing is completed up to the ridge, we will install the necessary materials for securing the ridge board, known as the “kanban.” There are types made of cedar and resin, and this time we used the resin type!
The resin type is expected to have three times the durability compared to the cedar type!
5. Ridge Cap Fabrication and Sealing at Various Locations
At the wall edge, we will process and install a component called rain stop flashing.
We use stainless steel nails and screws that are resistant to rust!
6. Cleaning
The roofing material used is Hiranbi 220 from Inagaki Shouji.
Hiranbi 220 comes with a manufacturer warranty of 15 years for the coating and 25 years for perforation.
For re-roofing and roof overlay, we also provide a 10-year construction warranty!
If there are any leaks within 10 years, we will make repairs free of charge.
Made of Galvalume steel, it is also resistant to rust.
The formed panels have been treated with iris folds and wave processing to prevent distortion and enhance strength, as well as improve water drainage and aesthetic effects.
Additionally, it excels in finish, durability, sound insulation, and wind resistance, and is lightweight compared to other roofing materials, which reduces the sway during earthquakes, making it a good earthquake countermeasure.
In this overlay (cover) construction, the roof becomes double-layered, which increases the weight, but Hiranbi is a lightweight roofing material, making it suitable for overlay (cover) construction.
Color
Extreme – MAX Type
■ Gray Silver
■ Silver Black
■ Sepia
■ Moss Green
■ Bamboo Green
■ Midnight Blue
■ Jet Black
■ Dark Brown
■ Bright Red
Standard Type
■ Steel Black
■Marron Brown
■J Silver
You can choose from these options!
Please check out our other roofing work examples here!
What is the Roof Overlay Method?
The roof overlay method involves leaving the existing roof almost intact and placing a new roof on top of it, effectively covering it.
Literally, it is a method of covering a roof with another roof. Therefore, the roof becomes double-layered. Since the roof is laid on top, it is also referred to as “overlapping roofing.”
Advantages of the Overlay Method
Since a “new roof” is placed over the “existing roof,” demolition work is almost unnecessary, meaning that very little waste is generated.
This is its most significant feature, leading to various advantages.
The only part that requires demolition and waste disposal is the ridge cap, making it more cost-effective compared to complete roof replacement.
In 2004, regulations regarding the concentration of asbestos in raw materials were changed (please refer to the Ministry of Health, Labour and Welfare’s website for details).
Some building materials used in structures built before 2004 contain asbestos. Asbestos-containing materials are difficult to demolish due to their high environmental impact, and the costs for demolition and waste disposal are also high. The overlay method, which generates almost no waste, is ideal for such roofs.
You may be wondering, “Is it safe to live in a building that uses asbestos-containing materials?” but rest assured. As long as there is no destruction or crushing, it will not disperse into the air.
If you are unsure about the type of roof on your home, please consult us.
Additionally, the construction can be completed in a shorter time frame compared to painting or complete replacement. A shorter construction period means lower labor costs, which in turn makes the overall cost lower.
The psychological anxiety of having to live in a different environment is also reduced.
When scaffolding is set up, you may experience inconveniences such as difficulty entering and exiting or not being able to open windows. Being able to return to your normal life in a short period is a significant advantage.
Our company specializes in roofing work, but the roof overlay method is the most frequently performed service we offer. We are very grateful that we have been continuously engaged in roof overlay method projects without interruption.
Procedure for Joint Replacement Work
1. Removal of Existing Sealant
This is referred to as sealing, caulking, or jointing. It is a crucial area as it can easily lead to water leaks and cause cracks or lifting in the siding. Cracks and peeling are signs of deterioration!
2. Application of masking tape
3. Application of primer
4. Filling with sealing material
5. Finishing with a spatula
Using a trowel that matches the joint width, we press firmly and finish smoothly. [/chat]
6. Removal of Masking Tape
We promptly remove the masking tape after finishing. [/chat]
Exterior Wall Painting Construction Procedure
1. High-Pressure Washing
2. Protection of Areas
3. Primer Coat
4. Middle Coat
To bring out the performance of
5. Top Coating
This is the finishing touch for the exterior wall painting. We focus on ensuring there are no uneven spots or missed areas, resulting in a beautiful finish! The paint used is from SK Kaken / Premium Silicon! [/chat]
6. Painting of Auxiliary Parts (Rain Gutter, Eaves, Shutters, Handrails)
・Rain Gutter, Fascia
・Eaves
We will thoroughly paint every detail that can be painted![/chat]
Please check out other painting work examples from here!
| Exterior Wall Paint |
  |
|---|---|
| Wall Color | SR164・SR102  |
| Accessory Paint | SK Kaken/Premium NAD Silicon |
| Accessory Color |
Black 
|
Leave your exterior renovation in Asao-ku, Kawasaki to Kakeru Koumuten Co., Ltd.!
Our company has extensive experience in exterior wall and roof renovations in Asao-ku, Kawasaki.
We are happy to assist with partial repairs such as exterior painting, roof work, waterproofing, and other construction work.
If you have any questions or concerns, such as “I just want to know the estimate” or “I want to know about the paint suitable for my home,” please feel free to contact us!
Community-Focused Service
We are an exterior renovation company based in Aoba-ku, Yokohama, but we have also handled many exterior renovations in the nearby Asao-ku, deeply understanding the needs of local customers. Whether you want to “make it last long with one renovation,” “keep costs down as much as possible,” or “want to do a color simulation for the exterior wall,” we provide optimal solutions to your specific requests.
Summary
Estimates and inspections are, of course, free! If you have any issues with roofs, rain gutters, exterior walls, or exteriors, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten is a renovation company strong in exterior renovations, and we conduct complete in-house construction from temporary scaffolding to roof work and exterior painting.
We are confident that our “cost, quality, and good planning” will not be outdone by other companies when it comes to exterior renovation work!
We are confident in our exterior renovations, so we welcome competitive estimates!
We offer comprehensive construction guarantees and aftercare maintenance, receiving high praise for our cost performance and appropriate proposals that align with our customers’ future life plans!
“I’m glad I asked them!” We take every request seriously to ensure you feel this way.
We look forward to your inquiries. Thank you very much.
For helpful information about exterior renovations, click here!
・Aso-ku, Kawasaki City | Exterior Wall Painting and Joint Replacement | We used premium inorganic materials!
・Aso-ku, Kawasaki City | Exterior Wall Painting | We performed exterior wall painting using nano composite!
・Miyamae-ku, Kawasaki City | Exterior Wall Painting | We performed roof and exterior wall painting using nano composite!
・Summary of Popular Exterior Wall Paint Colors! We will introduce recommended color combinations!
・DIY Painting Plan! A must-see for those who want to try DIY roof and exterior wall painting! We will only set up the scaffolding!
・About the Costs of Roof Overlay｜Kakeru Koumuten’s Roof Construction Plan!
・About the Costs of Exterior Wall Painting｜Kakeru Koumuten’s Exterior Wall Painting Plan!
・About the Costs of Leak Repairs｜Kakeru Koumuten’s Leak Repair Plan!
・Ridge Cap Replacement｜About the Costs of Surface Plaster｜Kakeru Koumuten’s Construction Plan!
・Latest Edition｜Subsidies and Grants Available for Renovations, and Reduction Systems!
・What are the Market Prices for Rain Gutter Repairs and Cleaning? Tips on Timing, Fire Insurance, and Choosing Contractors!
・Renovation Store in Yokohama City, Kanagawa Prefecture | What is Roof Overlay (Roof Cover Method)?
Consultations via LINE are also very welcome◎
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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!
