Hello!
I am Yamanaka from 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 a roof renovation project in Miyamae-ku, Kawasaki City, Kanagawa Prefecture.
The work involved a roof replacement (super galtect) project!
This time, we implemented leak prevention measures through the roof replacement work!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. among many contractors.
Roof Replacement Construction Procedure
1. Existing Roof Demolition
We will dismantle the existing roof.
2. New Sheathing Installation
After dismantling the roof, we will process and install new sheathing boards according to the dimensions.
3. Roofing Installation (Waterproof Sheet)
The roofing used this time is modified asphalt. It is expected to have double the durability of standard asphalt roofing!
3. Component Processing (Karakusa and Keraba)
We will process and install the keraba and karakusa.
4. Main Construction
While installing the main roofing materials, we will attach the front screws.
5. Sealer and Nailing Board Installation
Once the main roofing is completed, we will attach the sealer to the nailing board and then install the nailing board.
This time, we used a corrosion-resistant resin nailing board!
5. Ridge Cap Processing
We will process and install the ridge cap. We will ensure that sealing is properly applied to the inside of the joints.
At the wall edge, we will process and install a component called a rain guard metal.
6. Cleaning
We will remove footprints that inevitably appear and clean up any debris that has fallen around the house or inside the rain gutters.
We strive to ensure that the area looks cleaner after the work than it did before!
That concludes the work!
The roofing material used is Eco Granie from Kakeru Koumuten Co., Ltd.
The manufacturer offers a long warranty of 30 years on the base material.
Eco Granie is a lightweight metal roof made from zinc-aluminum steel, which is equivalent to galvalume steel, ensuring high durability.
The surface is coated with natural stone granules, which prevents significant fading and maintains aesthetic appeal over the long term.
Thanks to the stone granules on the surface, it can reduce summer heat and rain noise.
Additionally, it is lightweight, rust-resistant, and excels in durability and seismic resistance.
Eco Granie / Colors
■ Tweed Gray
■ Cafe
■ Onyx
■ Evergreen
This time, we completed the work beautifully with Onyx!
The customer was very satisfied!
Thank you very much!
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.
As the name suggests, it is a method of covering a roof with another roof, resulting in a double layer. This method is also referred to as “overlapping roofing.”
Advantages of the Overlay Method
Since a “new roof” is placed over the “current roof,” there is almost no need for demolition work, meaning that very little waste is generated.
This is its most significant feature, leading to various advantages.
The only parts that require demolition and waste disposal are the ridge caps, making it more cost-effective compared to complete roof replacement.
In 2004, regulations regarding the concentration of asbestos in raw materials were changed (for more details, please refer to the Ministry of Health, Labour and Welfare website).
Some building materials used in constructions completed before 2004 contain asbestos. Asbestos-containing materials are difficult to dismantle due to their high environmental impact, resulting in high costs for both demolition and waste disposal. The overlay method, which generates almost no waste, is ideal for such roofs.
Some of you may be wondering, “Is it safe to live in a building that uses materials containing asbestos?” Rest assured. As long as it is not destroyed or crushed, it will not disperse into the air.
If you are unsure about the type of roof on your home, please feel free to consult us.
Additionally, we can complete the work in a shorter time frame than painting or re-roofing. A shorter construction period means lower labor costs, which in turn makes the expenses more affordable.
This also reduces the psychological anxiety of having to live in an unusual environment.
When scaffolding is set up, you may experience inconveniences such as difficulty entering and exiting or being unable 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 (cover method) is the most frequently performed service we offer. We are very grateful that we are continuously able to carry out roof overlay (cover method) projects without interruption.
Conclusion
If you have any concerns regarding roofs, rain gutters, or exterior walls, please consult Kakeru Koumuten Co., Ltd.!
We handle everything from temporary scaffolding construction to roofing and exterior painting entirely in-house. We are confident that our costs, quality, and efficiency in exterior work are unmatched compared to other companies!
We welcome competitive estimates with confidence!
We are committed to ensuring that you feel, “I’m glad I chose them!” for every request we receive.
We look forward to your inquiries. Thank you very much.
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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!
