Hello!
This is 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 project in Kohoku-ku, Yokohama.
There are several types of exterior renovations, and this project involves the roof overlay (cover method) work!
We implemented measures against leaks caused by the roofing work!
On this page, we will explain the actual achievements carried out by Kakeru Koumuten!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.
目次
Roof Replacement Construction Procedure
1. Disassembly of Existing Roof Ridge Flashing
We will disassemble the existing roofing materials (ridge flashing, snow guards) that are unnecessary for the
2. Roofing Installation (Waterproof Sheet)
It is made of modified asphalt roofing, which is said to have double the durability of regular asphalt roofing.
With the roofing serving as the first line of defense against water, if it is properly installed, there will be no leaks!
We will secure it firmly to prevent it from blowing away.
3. Custom Fabrication (Curved Eaves, Gables, Valleys)
The materials used for the custom pieces are galvalume steel.
3. Main Construction (Inagaki Shouji/Hiranbi)
Once the roofing is completed up to the ridge, we will install a necessary material called a “kanban” to secure the ridge cap. The kanban can be made of cedar or resin, and this time we used a resin type!
The resin type is expected to have three times the durability compared to the cedar type!
4. Ridge Cap Processing and Sealing
We use stainless steel nails and screws that are resistant to rust!
5. Cleaning
I caught a big frog nearby! (laughs)
About Roofing Materials
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 overlaying, we also provide a 10-year construction warranty!
If there are 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 rain 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 the overlay (cover) work we performed this time, the roof becomes double-layered, which increases the weight, but Hiranbi is a lightweight roofing material, making it suitable for overlay (cover) work.
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!
This time, the cover work was finished very well with Silver Black!
Thank you for your request!!
Please check out other roofing work achievements here!
What is the Roof Overlay (Cover Method)?
The roof overlay method involves leaving the current 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 over, it is also referred to as “overlapping roofing.”
Advantages of the Overlay Method
Since a “new roof” is placed over the “current roof,” demolition work is almost unnecessary, meaning that very little waste material is produced.
This is the biggest feature and leads 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 (for details, please refer to the Ministry of Health, Labour and Welfare website).
Some building materials used in structures built before 2004 contain asbestos. Asbestos-containing materials are difficult to dismantle due to their high environmental impact, and the costs for demolition and waste disposal are also high. The overlay method, which produces almost no waste, is ideal for such roofs.
Some may wonder, “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 feel free to consult with us.
Additionally, the construction can be completed in a shorter timeframe compared to painting or complete roof replacement. A shorter construction period means lower labor costs, which in turn makes the expenses more affordable.
The psychological anxiety of having to live in an unusual environment is also reduced.
When scaffolding is erected, 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, and the roof overlay method is the most frequently performed type of work we do. We are very grateful that we continuously have projects for roof overlay work without interruption.
| Roof Material |
|
|---|---|
| Manufacturer Warranty | Coating 15 years; Puncture 25 years |
| Expected Durability | About 35 years |
| Color Used This Time |
Silver Black
|
Leave Your Roof Renovation in Kohoku Ward, Yokohama to Kakeru Koumuten!
Our company has extensive experience in roof renovations in Kohoku Ward.
We are happy to assist with roof overlay work, roof replacement, and partial roof repairs such as leak repairs.
If you have any questions or concerns, such as “I just want to know the estimate for the roof renovation” or “I want to know about roofing materials,” please feel free to contact us!
Community-Focused Service
As a home exterior renovation company based in Aoba-ku, Yokohama, we have handled many roof renovations in nearby Kohoku Ward and have a deep understanding of the needs of local customers. Whether you want a renovation that lasts long with a single job, want to keep costs down, or want to improve insulation performance because your indoor space is hot, we provide optimal solutions for your specific requests.
Conclusion
Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exterior walls, or exterior works, please consult with Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten is a remodeling company strong in exterior renovations, and we carry out everything from temporary scaffolding work to roof work and exterior painting completely in-house.
We are confident that our “cost, quality, and efficiency” in exterior renovation work are unmatched compared to other companies!
We are confident in our exterior renovations, so we welcome competitive estimates!
We offer comprehensive construction guarantees and aftercare maintenance, and we have received positive feedback for our appropriate proposals that align with cost performance and our customers’ future life plans!
“I’m glad I asked them!” We take every request seriously to ensure you feel this way.
We also have information on roof construction costs and pricing plans for the roof overlay (cover method), so please take a look if you’re interested!
We look forward to your inquiries. Thank you very much.
Helpful information about exterior renovations can be found here!
・Kohoku-ku, Yokohama | Roof overlay (cover method) | We performed the cover method with Super Galtect!
・Aoba-ku, Yokohama | Roof work | We performed a roof replacement with Super Galtect!
・Kohoku-ku, Yokohama | Roof overlay (cover method) | We performed the cover method with Super Galtect!
・Summary of Popular Exterior Wall Painting 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 Roofing 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 Repair and Cleaning? Tips on Timing, Fire Insurance, and Choosing Contractors!
・Renovation Store in Yokohama City, Kanagawa Prefecture | What is Roof Overlay (Roof Cover Method)?
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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!
