Hello!
This is 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 project in Asahi-ku, Yokohama.
The work this time involves the roof overlay (cover method) using Ridgeway!
We implemented measures against leaks through roofing work!
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.
Roof Overlay (Cover Method) Construction Steps
1. Dismantling Existing Ridge Flashing
2. Installing Roofing (Waterproof Sheet)
The roofing used is Tajima Roofing/Tadis Self!
It is made of a delayed adhesive modified asphalt roofing material, which is said to have double the durability of regular asphalt roofing.
Due to its adhesive properties, it sticks to the substrate, providing higher waterproofing compared to standard roofing.
As a primary waterproofing measure, if the roofing is solid, there will be no leaks!
We will ensure it is firmly adhered to prevent it from blowing away.
3. Fabricating Accessories (Curly Patterns and Eaves)
The materials used for the accessories are made of galvalume steel.
4. Main Construction (Asahi Fiberglass/Ridgeway)
Once the roofing is completed, we will install the necessary materials for fixing the ridge board, known as the “kanban.” There are types made of cedar and resin, and this time we used the resin type!
The resin type is expected to have three times the durability compared to the cedar type!
5. Ridge Cap and 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 (Ridgeway)
The roofing material used is Ridgeway from Asahi Fiberglass.
Ridgeway comes with a 10-year manufacturer warranty.
Since it uses natural stone that is baked onto the surface, it is a roofing material that does not require painting, thus reducing maintenance costs!
Additionally, because it uses fine natural stones on the surface, you won’t be troubled by rain noise.
Moreover, it is a lightweight roofing material, making it strong against earthquakes and providing seismic resistance.
※ After installation, the surface decorative stones may fall off for about a week, but there is no issue with quality.
Colors
■ Dual Black
■ Harvard Slate
■ Vintage Green
■ Dual Brown
■ Earthtone Cedar
This time, the roofing work with Dual Black turned out very well!
The customer was also very satisfied, and I was very happy too!
Thank you very much!
Please check out other roofing work achievements from here!
What is the roof overlay (cover method)?
The roof overlay (cover method) involves leaving the current roof almost intact and placing a new roof on top of it, effectively covering it.
Literally, it is a method of covering a roof with another roof. Therefore, the roof becomes double-layered. Since the roof is layered, it is also referred to as “overlapping roofing.”
Advantages of the Cover Method
By placing a “new roof” over the “current roof,” demolition work is almost unnecessary, 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 cap, so compared to complete roof replacement, the cost is lower.
In 2004, regulations regarding the concentration of asbestos in raw materials were changed (for details, please visit the Ministry of Health, Labour and Welfare’s website).
Some building materials used in structures constructed before 2004 contain asbestos. Asbestos-containing materials are challenging to dismantle due to their high environmental impact, and the costs for demolition and waste disposal are also high. The cover method, which generates almost no waste, is ideal for such roofs.
Some may wonder, “Is it safe to live in a building that uses asbestos-containing materials?” but rest assured. As long as there is no destruction or crushing, 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, the construction can be completed in a shorter period than painting or complete roof replacement. A shorter construction period means lower labor costs, which in turn makes the overall cost lower.
The psychological anxiety of having to live in a different environment is also reduced.
When scaffolding is erected, there may be inconveniences such as difficulty entering and exiting or opening windows. Being able to return to 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 type of work we undertake. We are very grateful that we have been continuously able to carry out roof overlay (cover method) projects without interruption.
| Roof Material |
|
|---|---|
| Manufacturer Warranty | 10 years |
| Expected Durability | 25 to 30 years |
| Color Used This Time |
Dual Black
|
Leave Your Roof Renovation in Aoba-ku, Yokohama to Kakeru Koumuten!
Our company is based in Yokohama, and we have extensive experience in roof renovations in Aoba-ku, Yokohama.
We are happy to handle everything from roof overlay work, roof replacement, to partial roof repairs such as leak fixes.
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!
Kakeru Koumuten is a renovation company strong in exterior renovations, and we carry out all work 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!
We offer comprehensive construction guarantees and aftercare maintenance, and we have received positive feedback for our appropriate proposals that match our customers’ future life plans and cost performance!
We want you to think, “I’m glad I asked them!” We take every request seriously and work diligently on it.
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.
・Asahi-ku, Yokohama | Roof Overlay | We performed a roof overlay using Ridgeway!
・Midori-ku, Yokohama | Roof Remodeling | We performed a roof overlay using Ridgeway!
・Midori-ku, Yokohama | Roof Overlay | We performed panel removal and roof work!
・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 is the cost range for roof remodeling? Types of construction and how to choose a contractor, etc.
・We will introduce construction methods according to the type of roof construction and the degradation situation!
・Latest! Subsidies and grants available for remodeling, and reduction systems!
・Remodeling store in Kanagawa Prefecture, Yokohama | What is roof layering (roof overlay method)?
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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!
