¥ Aoba-ku, Yokohama | Construction Data
| Construction Location |
| Setagaya-ku, Tokyo |
| Construction Details |
| Temporary Scaffolding Installation Roof Overlay (Cover Method) |
| New Materials Used |
| ◯ Roof Overlay (Cover Method) Roof Material: Aijii Industry / Super Galtect (Color: Shade Charcoal) Roofing: Tajima Roofing / New Liner Roofing Purlin: Galvalume Steel Sealing Material: Auton Exceed |
| Price Range |
| 600,000 – 700,000 yen |
| Construction Period |
| Approximately 6 days |
| Completion Month |
| November 2025 |
目次
Roof Overlay Construction Procedure
1. Demolition of Existing Ridge and Snow Guards
The durability of wooden purlins is approximately 10 to 15 years. Once the durability period is exceeded, corrosion and discoloration occur, which can lead to the detachment and scattering of the ridge flashing.
2. Installation of Roofing (Waterproof Sheet) andAccessory Processing (Eaves, Gable, Valley)
New Liner Roofing is the ideal roofing sheet for overlay methods on weak slate materials such as non-asbestos roofing. With the role of secondary waterproofing, if the roofing is properly installed, it generally does not leak. We will ensure it is firmly applied so it does not get blown away by the wind.
Since there are various durability periods and characteristics for roofing sheets, it is important to choose a roofing sheet that matches the durability period of the new roof and the roof slope!
The metal at the ridge is our original integrated waste board type ridge base. It has a durability of approximately 30 years and is a highly wind-resistant ridge base.
3.Main Construction (Aiji Industrial / Super Galtect)
After processing the
Once we have installed the Galtect up to the ridge, we will set up the necessary materials to secure the ridge cap, known as the “kanban.” We offer three types of kanban: cedar, resin, and Galvalume steel, and this time we used the Galvalume steel!
The Galvalume steel is expected to have three times the durability compared to cedar! Unlike resin or cedar, it won’t crack, so you can rest assured!
Our original integrated waste board made of Galvalume steel for the ridge base is highly durable, offers strong fastening power, and has excellent wind resistance!
Even if rainwater enters from the ridge, it has a mechanism to discharge rainwater to the outside, providing high waterproof performance!
It is perfect for the ridge base of Super Galtect!
4. Ridge Cap Processing and Sealing at Various Locations
We will process and install the ridge cap
We will use rust-resistant stainless steel screws with waterproof washers for fastening!
Screws with washers are less likely to come loose compared to nails,
and securely fasten the ridge cap to the kanban!
Although it’s not visible after construction,
installing a face plate on the inside of the ridge cap
enhances waterproofing!
It firmly protects the ridge, which is a critical part of the roof.
5. Cleaning
After the
We will also wipe away any footprints left on the roof to ensure it looks clean.
About Roofing Materials

The roofing material used is Ai-Gi Kogyo / Super Galtect. Super Galtect comes with a 15-year coating warranty and a 25-year hole warranty from the manufacturer, along with a 10-year construction warranty from our company! Additionally, it is made of SGL steel, which is resistant to rust.
The insulation material is tightly applied from edge to edge of the roofing material, creating a metal panel that integrates steel and insulation. During installation, insulation is applied even to the areas where the roofing materials overlap, and the surface is coated with a highly heat-reflective paint, making it possible to stay cool in summer and warm in winter.
Moreover, it also has soundproofing properties, reducing the sound of rain. Being lighter than other roofing materials, it minimizes the sway during earthquakes, providing earthquake resistance.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and our company’s construction achievements show that Ai-Gi Kogyo’s Super Galtect is the most frequently used, gaining significant attention!
Color
■Shade Black

■Shade Brown

■Shade Blue

■Shade Moss Green

■Shade Charcoal

■New Color Shade Wine Red

You can choose from these 6 colors!
This time, we completed the overlay work with Shade Charcoal, and it turned out very well!
The customer was very satisfied, and I was also very happy!
Thank you very much!
Please check out other roofing work achievements from here!
| Roof Material |
|
|---|---|
| Manufacturer Warranty | Coating 15 years, Rust 20 years, Puncture 25 years |
| Expected Durability | About 35 to 40 years |
| Color Used This Time |
|
Leave Your Roofing Work in Setagaya, Tokyo to Kakeru Koumuten!
Our company is based in Yokohama and has extensive experience in roof renovations in Setagaya, Tokyo.
We are happy to assist with partial roof repairs, including roof overlay work, roof replacement, and leak repairs!
If you have any questions or concerns, such as “I just want to know the estimate for a roof renovation” or “I want to know about roofing materials,” please feel free to contact us!
Community-Focused Service
As an exterior renovation company based in Kanagawa Prefecture, we have handled many roof overlays in Setagaya and have a deep understanding of the needs of local customers. Whether you want a long-lasting renovation in one go, aim to keep costs down, or want to improve insulation because your indoors are hot, we will propose the best solutions for your specific requests.
List of Areas in Setagaya, Tokyo
Akaidate, Setagaya-ku, Tokyo / Ikejiri, Setagaya-ku, Tokyo / Unanene, Setagaya-ku, Tokyo / Umegaoka, Setagaya-ku, Tokyo / Okura, Setagaya-ku, Tokyo / Ohara, Setagaya-ku, Tokyo / Okamoto, Setagaya-ku, Tokyo / Okusawa, Setagaya-ku, Tokyo / Oyamadai, Setagaya-ku, Tokyo / Kasuya, Setagaya-ku, Tokyo / Kamata, Setagaya-ku, Tokyo / Kamima, Setagaya-ku, Tokyo / Kamikitazawa, Setagaya-ku, Tokyo / Kamoshita, Setagaya-ku, Tokyo / Kameido, Setagaya-ku, Tokyo / Kitakurayama, Setagaya-ku, Tokyo / Kitazawa, Setagaya-ku, Tokyo / Kitami, Setagaya-ku, Tokyo / Kinuta, Setagaya-ku, Tokyo / Kinuta Park, Setagaya-ku, Tokyo / Kyuta, Setagaya-ku, Tokyo / Kyodo, Setagaya-ku, Tokyo / Gotokuji, Setagaya-ku, Tokyo / Komazawa, Setagaya-ku, Tokyo / Komazawa Park, Setagaya-ku, Tokyo / Sakura, Setagaya-ku, Tokyo / Sakuraoka, Setagaya-ku, Tokyo / Sakurashinmachi, Setagaya-ku, Tokyo / Sakurajōsui, Setagaya-ku, Tokyo / Sangenjaya, Setagaya-ku, Tokyo / Shimoma, Setagaya-ku, Tokyo / Shinmachi, Setagaya-ku, Tokyo / Seijo, Setagaya-ku, Tokyo / Seta, Setagaya-ku, Tokyo / Setagaya, Setagaya-ku, Tokyo / Soshigaya, Setagaya-ku, Tokyo / Taishido, Setagaya-ku, Tokyo / Daisawa, Setagaya-ku, Tokyo / Daita, Setagaya-ku, Tokyo / Tamagawa, Setagaya-ku, Tokyo / Tamagawadai, Setagaya-ku, Tokyo / Tamagawadenenchōfu, Setagaya-ku, Tokyo / Tamazutsumi, Setagaya-ku, Tokyo / Chitosedai, Setagaya-ku, Tokyo / Tsurumaki, Setagaya-ku, Tokyo / Todoroki, Setagaya-ku, Tokyo / Nakacho, Setagaya-ku, Tokyo / Noge, Setagaya-ku, Tokyo / Nozawa, Setagaya-ku, Tokyo / Hachiman-yama, Setagaya-ku, Tokyo / Hanegi, Setagaya-ku, Tokyo / Higashitamagawa, Setagaya-ku, Tokyo / Fukazawa, Setagaya-ku, Tokyo / Funabashi, Setagaya-ku, Tokyo / Matsubara, Setagaya-ku, Tokyo / Mishuku, Setagaya-ku, Tokyo / Minami-Kurayama, Setagaya-ku, Tokyo / Miyasaka, Setagaya-ku, Tokyo / Yoga, Setagaya-ku, Tokyo / Wakabayashi, Setagaya-ku, Tokyo
Long-Term Reliability
All roofing materials we use come with reliable long-term warranties. For example, the Super Galtect we used this time has a 15-year paint warranty and a 25-year hole warranty from the manufacturer. We also provide a 10-year construction warranty, so you can use it with peace of mind for a long time after just one renovation.
Super Galtect is a lightweight roofing material that excels in durability and cost performance, but we also offer roofing materials with even higher durability and better insulation properties, so please feel free to consult with us.
Summary
Estimates and inspections are, of course, free!
If you have any concerns regarding roofs, rain gutters, exterior walls, or exteriors, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten has become a strong remodeling company specializing in exterior renovations, performing everything from temporary scaffolding work to roofing 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! Our construction warranties and aftercare services are comprehensive, and we have received positive feedback for our appropriate proposals that match our customers’ future life plans and cost performance!
“I’m glad I asked them!” We take every request seriously to ensure you feel this way.
We also have information on roofing 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!
・[Setagaya-ku, Tokyo] Exterior Wall Renovation | We performed partial siding replacement work!
・[Setagaya-ku, Tokyo] | Roofing Work | We performed a roof overlay using Diplomat Star!
・[Setagaya-ku, Tokyo] Exterior Wall Cleaning | We conducted exterior wall cleaning without the need for scaffolding!
・For exterior renovations in Setagaya-ku, Tokyo, trust Kakeru Koumuten!
・For roof renovations in Setagaya-ku, Tokyo, trust Kakeru Koumuten!
・For rain gutter repairs and cleaning in Setagaya-ku, Tokyo, trust Kakeru Koumuten!
・For leak repairs in Setagaya-ku, Tokyo, trust Kakeru Koumuten!
・For solar panel installation work in Setagaya-ku, Tokyo, trust Kakeru Koumuten!
・For waterproofing work in Setagaya-ku, Tokyo, trust Kakeru Koumuten!
・For exterior wall cleaning in Setagaya-ku, Tokyo, trust Kakeru Koumuten!
・For exterior wall covering work in Setagaya-ku, Tokyo, trust Kakeru Koumuten!
・After Maintenance by Kakeru Koumuten Co., Ltd.
・Construction Menu and Price List by Kakeru Koumuten Co., Ltd.
・Staff Blog and Announcements by Kakeru Koumuten Co., Ltd.
LINE consultations are also very welcome◎
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!



