[Tokyo, Kiyose City] | Over 20 Years Old | Performed roof overlay using Super Galtect on slate roof!
Seibu City, Tokyo | Construction Data
| Construction Location |
| Kiyose City, Tokyo |
| Construction Details |
| Temporary scaffolding installation Roof overlay (cover method) |
| New Materials Used |
| ◯Roof overlay (cover method) Roof material: Aijii Industry / Super Galtect (Color: Wine Red) Roofing: Tajima Roofing / Tadi Self Cover Nail board: Galvalume steel Sealing material: Auton Exceed |
| Price Range |
| 800,000 to 900,000 yen |
| Construction Period |
| Approximately 5 days |
| Completion Month |
| September 2025 |
Roof Overlay Construction Procedure
1. Demolition of Existing Ridge and Snow Stops
The lifespan of wooden purlins is approximately 10 to 15 years. Once the lifespan is exceeded, corrosion and discoloration occur, leading to the detachment and scattering of the ridge flashing.
2. Installation of Roofing (Waterproof Sheet)Installation of Accessories (Eaves, Gable, Valley)
Tadi Self Cover is the ideal roofing sheet for the overlay method of fragile slate materials like non-asbestos roofing. As a secondary waterproofing measure, if the roofing is properly installed, it generally will not leak. We will ensure it is firmly applied to prevent it from being blown away by the wind.
Since there are various lifespans and characteristics of roofing sheets, it is important to choose roofing sheets that match the lifespan of the new roof and the roof slope!
The hardware at the ridge is our original integrated waste board type ridge base. The lifespan is approximately 30 years, making it a highly wind-resistant ridge base.
3.Main Body Construction (Aijii Industry / Super Galttect)
After processing the
Once we have installed up to the ridge, we will set up the necessary materials to fix the ridge board known as the kanban. We offer three types of kanban: cedar, resin, and galvalume steel, and this time we used galvalume steel!
Galvalume steel is expected to have three times the durability of cedar! Unlike resin or cedar, it does not crack, so you can rest assured!
Our original integrated waste board made of galvalume steel is highly durable, has strong fixing power, and 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 super Galttect ridge base!
4. Ridge Metal Processing and Sealing at Various Locations
We will process and install the
We will use rust-resistant stainless steel screws with waterproof packing for fixing!
Screws with packing are less likely to come out compared to nails and
securely fix the ridge metal to the kanban!
Although it is not visible after construction,
installing a face plate inside the ridge cap
enhances waterproofing!
It firmly protects the ridge, which is a critical point of the roof.
5. Cleaning
After the
Additionally, we will 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 perforation 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 parts where the roofing materials overlap, and the surface is coated with a highly heat-reflective paint, allowing for a cool summer and a warm winter experience.
Moreover, it also has soundproofing properties, reducing the sound of rain. Being lighter than other roofing materials, it minimizes the sway during earthquakes, providing additional earthquake resistance.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and our company’s construction results show that Ai-Gi Kogyo’s Super Galtect is the most popular choice, 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 in Shade Wine Red, 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 examples 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 Kakeru Koumuten Co., Ltd. in Kiyose, Tokyo!
Our company is based in Kanagawa Prefecture and has extensive experience in roofing renovations in Kiyose, Tokyo.
We are happy to assist with roof overlay work, roof replacement, and even partial roof repairs such as leak fixes!
If you have any questions like “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 in Kanagawa Prefecture, we have handled many roof overlays in Kiyose, Tokyo, and deeply understand the needs of local customers. Whether you want a long-lasting renovation, to keep costs down, or to improve insulation because your indoors are too hot, we will propose the best solutions for your specific requests.
Areas in Kiyose, Tokyo
Kiyose City Asahigaoka / Kiyose City Umezono / Kiyose City Kamikiyoto / Kiyose City Shimoyado / Kiyose City Shimokiyoto / Kiyose City Takeoka / Kiyose City Nakakiyoto / Kiyose City Nakazato / Kiyose City Nosho / Kiyose City Matsuyama / Kiyose City Motomachi
Long-Term Reliability
All the roofing materials we use come from reliable products that offer long-term warranties. For example, the Super Galtect we used this time comes with 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 handle roofing materials with even higher durability and better insulation properties, so please feel free to consult us.
Summary
Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exterior walls, or exterior structures, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten has become a strong renovation company specializing in exterior renovations, performing everything from temporary scaffolding to roofing and exterior painting completely in-house. We are confident that in terms of cost, quality, and efficiency, we do not fall behind compared to other companies!
We are confident in our exterior renovations, so we welcome competitive estimates! Our construction warranties and aftercare services are robust, 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!
・【Odawara City, Kanagawa】 Exterior Wall Cleaning | We performed exterior wall cleaning without the need for scaffolding!
・【Nakahara Ward, Kawasaki】 | We replaced the water heater in a detached house!
・【Hodogaya Ward, Yokohama】 Exterior Wall Cleaning | We performed exterior wall cleaning without the need for scaffolding!
・For exterior renovations in Kiyose City, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For roof renovations in Kiyose City, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For rain gutter repairs and cleaning in Kiyose City, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For solar panel installation in Kiyose City, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For exterior wall cleaning in Kiyose City, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For waterproofing work in Kiyose City, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・For leak repairs in Kiyose City, Tokyo, trust Kakeru Koumuten Co., Ltd.!
・Aftercare by Kakeru Koumuten Co., Ltd.
・Construction menu and price list of Kakeru Koumuten Co., Ltd.
・Kakeru Koumuten Co., Ltd. Staff Blog & Announcements
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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!



