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 Sumida-ku, Tokyo.
There are several types of exterior renovations, but this involves replacing the exterior wall (from mortar to galvalume steel sheet)!
・Inquiry Details
・The exterior wall is crumbling, and I’m in trouble…
・It’s a warehouse, so I want to keep costs low…
・It might be too late, but I want someone to take a look…
We received such inquiries!
When we actually visited the site for an inspection, we found that the mortar on the exterior wall was peeling and had fallen off in several places…
Since the exterior wall mortar is thick and heavy, it could cause a disaster if it fell on someone.
This time, since the underlying structure was also weakened, we proposed replacing it with lightweight, rust-resistant, and cost-effective galvalume steel sheet!
On this page, we will explain the actual results of the work done by Kakeru Koumuten!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.
Exterior wall replacement construction procedure
1. Demolition of existing exterior wall (mortar)

2. New Sheathing Installation (Softwood Plywood)

3. Waterproof Paper Installation and Custom Metal Work

4. Main Construction (Galvalume Steel Wave Roofing)

5. Cleaning Up and Completion!

Materials Used
■ Galvalume Steel Corrugated Sheet (Blue)
Commonly found at home improvement stores!
■ Fittings JFE Steel / Kiwami MAX
Color: Jet Black (Pure Black)
Eaves metal, edge trims, corner joints
The corner joints were specially processed at the factory!
■ Base Material
・Softwood Plywood
Available at home improvement stores!
■ Waterproof Paper
Shizureki (42m roll)
The roofing type comes in rolls of 15m to 21m, but the exterior wall type is longer, at 40m to 50m!
That’s all!
It was a nerve-wracking construction process, but I’m glad we completed it safely!
The customer was also very satisfied!
Thank you very much!
Please check out other construction achievements from here!
Leave your roofing and exterior wall concerns to us!
Estimates and inspections are, of course, free! If you have any issues with roofs, rain gutters, exterior walls, or exterior work, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
We carry out everything from temporary scaffolding work to roofing and exterior painting completely in-house. We are confident that we won’t be beaten in terms of cost, quality, and efficiency compared to other companies!
We welcome competitive estimates with confidence!
You’ll be glad you chose us! We take every request seriously to ensure you feel that way.
We look forward to your inquiries. Thank you very much.
Useful information about exterior renovations can be found here!
・Aoba-ku, Yokohama | We performed roof overlay construction using Super Galtuct!
・Aoba-ku, Yokohama | Roof remodeling | We performed overlay construction using Super Galtuct!
・Aoba-ku, Yokohama | We performed overlay construction from Urbanie to Super Galtuct!
・Painting DIY Plan! For those who want to try DIY roof and exterior wall painting! We will only set up the scaffolding!
・About the cost of roof overlay | Kakeru Koumuten’s roof construction plan!
・About the cost of exterior wall painting | Kakeru Koumuten’s exterior wall painting plan!
・About the cost of leak repairs | Kakeru Koumuten’s leak repair plan!
・About the cost of ridge cap replacement and surface plaster | Kakeru Koumuten’s construction plan!
・Latest | Subsidies and grants available for renovations, and reduction systems!
・Renovation Store in Kanagawa Prefecture, Yokohama | What is Roof Overlay (Roof Cover Method)?
We welcome consultations via LINE as well◎
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!



