Hello!
We are Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
This is a case study of an exterior renovation project in Aoba-ku, Yokohama.
The work this time involves a roof overlay (cover method) using Super Galtect!
We implemented measures against leaks through the roofing work!
The existing roofing material is called Eco Simple, which is prone to cracking and cannot be painted.
We received an inquiry due to the roofing material cracking and falling into the neighbor’s yard, which led us to propose the cover method for the project.
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.
Roof Overlay Construction Procedure
1. Existing Roof Ridge Cap
2. Installing Roofing (Waterproof Sheet)
It is made of modified asphalt roofing, which is said to have double the lifespan of regular asphalt roofing.
As a primary waterproofing measure, if the roofing is solid, there will be no leaks!
We will ensure it is securely attached to prevent it from blowing away.
3.Accessory Processing (Karakusa, Keraba, Tani)

The accessories used are genuine Galtect accessories made of SGL copper plate!
4.Main Construction (Aiji Industry/Super Galtect)

Once the installation reaches the ridge, we will set up necessary materials called “kanban” to secure the ridge flashing. There are types of kanban made of cedar and resin, and this time we used cedar!
5.Ridge Flashing Processing & Sealing at Various Locations

The nails and screws used for fixing are made of stainless steel, which is resistant to rust!
6.Cleaning

About Roofing Materials
The roofing material used is the Super Galtect from Aijii Industry.
The Super Galtect comes with a manufacturer warranty of 15 years for the coating and 25 years for perforation.
Our company also provides a 10-year construction warranty!
Made of SGL steel plate, it is resistant to rust.
Insulation material is thoroughly applied from edge to edge of the roofing material, creating a metal sheet that integrates the steel plate and insulation.
When installed, insulation is applied even to the areas where the roofing materials overlap, and the surface is coated with high heat-reflective paint, allowing for a cool summer and warm winter experience.
Additionally, it has soundproofing properties, reducing the sound of rain.
Being lighter than other roofing materials, it also minimizes the swaying during earthquakes, contributing to earthquake resistance.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and the Super Galtect from Aijii Industry is the most frequently used in our construction achievements, gaining significant attention!
Colors
■ Shade Black

■ Shade Brown

■ Shade Blue

■ Shade Moss Green

■ Shade Charcoal

■New Color Shade Wine Red

You can choose from 6 colors!
This time, the cover work was completed very well with Shade Black!
The customer was very satisfied, and I was also very happy!
Thank you very much!
Please check out other roofing work results here!
| Roof Material |
|
|---|---|
| Manufacturer Warranty | Coating 15 years, Red Rust 20 years, Perforation 25 years |
| Expected Durability | About 40 years |
| Color Used This Time |
Shade Black
|
Summary
With extensive experience and solid knowledge in roof renovations in Aoba-ku, Yokohama, we at Kakeru Koumuten Co., Ltd. have gained high trust from local customers.
Community-Focused Service
As an exterior renovation company in Aoba-ku, Yokohama, we handle many roof renovations and deeply understand the needs of local customers. Whether it’s “wanting longevity from a single renovation,” “trying to keep costs down,” or “wanting to improve insulation because the indoors are hot,” we provide optimal solutions for specific requests.
Long-Term Reliability
All the roofing materials we use are highly reliable products that come with 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! You can use it with peace of mind for a long time after just one renovation.
Galtect is a durable roofing material, but we also offer roofing materials with even higher durability and better insulation properties.
Leave Your Roof Renovation in Aoba-ku, Yokohama to Kakeru Koumuten!
Our company is based in Aoba-ku, so we have a wealth of experience in roof renovations in the area.
We are happy to assist with partial roof repairs, including roof overlay work, roof replacement work, and 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!
Estimates and inspections are, of course, free! If you have any issues with your roof, rain gutters, exterior walls, or exterior structures, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten is a renovation company strong in exterior renovations, and we perform complete in-house construction from temporary scaffolding to roofing and exterior wall painting.
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 warranties and aftercare maintenance, 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 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 is here!
・Aoba-ku, Yokohama | Roof Overlay (Cover Method) | We performed the cover method using Super Galtect!
・Aoba-ku, Yokohama | We conducted roof cover work using Urbanie and Super Galtect!
・Miyamae-ku, Kawasaki | We performed the roof cover method using Hilanbee 220!
・Painting DIY Plan! A must-see for those who want to try DIY roof and exterior wall painting! We will only set up the scaffolding!
・What are the average costs for roof remodeling? Types of construction and how to choose a contractor, etc.
・Latest! About subsidies and grants available for renovations, and reduction systems!
・How much does it cost for roof work? We will introduce the average costs!
・What are the price ranges for rain gutter repair and cleaning? Tips on timing, fire insurance, and choosing a contractor!!
・Renovation store in Yokohama, Kanagawa Prefecture | What is roof overlay (roof cover method)?
Consultations via LINE 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!



