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 Isohama-ku, Yokohama, Kanagawa Prefecture.
The work involved a roof overlay (cover method) using Super Galtect!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.
目次
Roof Overlay Construction Procedure
1. Demolition of Existing Ridge and Snow Stops
We will dismantle only the ridge flashing, ventilation ridge, and snow stops that may obstruct the overlay work.
2. Laying Roofing (Waterproof Sheet)
The roofing material used this time is modified asphalt. It is expected to have double the durability of standard asphalt roofing!
3. Fabrication of Components (Curlicue, Eaves, Valley, Waste Board)
We will process and install the waste board, eaves, curlicue, and valley metal sheets.
4. Main Construction
Once the main roofing is installed, we will place the ridge and wall plates. This time, we used cedar for the plates, but there are also resin plates that are resistant to corrosion.
5. Ridge Metal and Wall Rain Guard Metal Fabrication
We will process and install the ventilation ridge and ridge metal. For the wall, we will process and install a component called rain guard metal. We will also apply sealing thoroughly.
6. Cleaning
We will remove any footprints and debris that have fallen around the house and inside the rain gutters, and perform a thorough cleaning.
We strive to leave the site cleaner after the work than it was before!
The construction is now complete!
The roofing material used is the Super Galtect from Aijii Kogyo.
The Super Galtect comes with a manufacturer warranty of 15 years for the coating and 25 years for perforation.
We also provide a 10-year construction warranty!
Made of Galvalume steel, it is resistant to rust.
Insulation material is tightly applied from edge to edge of the roofing material, creating a metal panel that integrates steel and insulation.
When installed, insulation is applied even to the parts where the roofing materials overlap, and the surface is coated with a high heat-reflective paint, allowing for a cool summer and a warm winter.
Additionally, it has soundproofing properties, reducing the sound of rain.
Furthermore, it is lightweight compared to other roofing materials, which reduces the sway during earthquakes, providing earthquake resistance.
You can choose from five colors: Shade Black, Shade Brown, Shade Blue, Shade Moss Green, and Shade Charcoal.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and among our construction achievements, the Super Galtect from Aijii Kogyo is the most popular and highly regarded!
This time, the cover work was completed very well in Shade Black!
Thank you for your request!!
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.
Literally, it is a method of covering a roof with another roof. Therefore, the roof becomes double-layered. Since the roofs are layered, it is also referred to as “overlapping roofing.”
Advantages of the Overlay Method
Since a “new roof” is placed over the “current roof,” demolition work is almost unnecessary, meaning that very little waste is generated.
This is its biggest feature, leading to various advantages.
The only parts that require demolition and waste disposal are the ridge cap, making it more cost-effective compared to complete roof replacement.
In 2004, regulations regarding the concentration of asbestos in raw materials were changed (for details, please refer to the Ministry of Health, Labour and Welfare website).
Building materials constructed before 2004 may contain asbestos. Asbestos-containing materials are difficult to dismantle due to their high environmental impact, and the costs for demolition and waste disposal are also high. The overlay method, which generates almost no waste, is ideal for such roofs.
Some may wonder if it is safe to live in buildings that use 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 roofing on your home, please feel free to consult us.
Additionally, it can be completed in a shorter time frame compared to painting or complete replacement. A shorter construction period means lower labor costs, which in turn makes the costs more affordable.
The psychological anxiety of having to live in a different environment is also reduced.
When scaffolding is set up, there may be inconveniences such as difficulty in 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, but the roof overlay method is the most frequently performed work we undertake. We are very grateful that we are continuously engaged in roof overlay method projects without interruption.
Conclusion
| Roofing Material |
|
|---|---|
| Manufacturer Warranty | Coating 15 years, Rust 20 years, Puncture 25 years |
| Expected Durability | About 40 years |
| Color Used This Time |
Shade Black
|
With extensive experience and solid knowledge in roof renovations in Iso-ku, we at Kakeru Koumuten Co., Ltd. have earned high trust from local customers.
Community-Focused Service
We are an exterior renovation company based in Aoba-ku, Yokohama, but we also handle many roof renovations in Iso-ku, deeply understanding the needs of local customers. Whether it’s “I want my renovation to last a long time,” “I want to keep costs down,” or “I want to improve insulation because my room is hot,” we provide optimal solutions for specific requests.
Long-Term Reliability
All roofing materials we use are highly reliable products that offer long-term warranties. For example, the Super Galtect from Aijii Industry used this time comes with a 15-year coating warranty and a 25-year puncture warranty. 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 roofing material with excellent durability, but we also handle roofing materials with even higher durability and better insulation properties.
Leave Your Roof Renovation in Iso-ku, Yokohama to Kakeru Koumuten!
We have a wealth of experience in roof renovations in Iso-ku.
We are happy to assist with partial roof repairs such as roof overlay work, roof replacement work, and leak repairs.
“I just want to know the estimate for the roof renovation,” “I want to know about roofing materials,” if you have any concerns or questions, please feel free to contact us!
Estimates and inspections are, of course, free! If you have any issues with roofs, rain gutters, exterior walls, or exteriors, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten Co., Ltd. is a remodeling company strong in exterior renovations, and we carry out everything from temporary scaffolding work to roof work and exterior painting completely in-house.
When it comes to exterior renovation work, we are confident that we will not be outdone by other companies in terms of “cost, quality, and efficiency”!
We are confident in our exterior renovations, so we welcome competitive estimates!
We also offer comprehensive construction guarantees and aftercare maintenance, and we have received positive feedback for our cost performance and appropriate proposals that align with our customers’ future life plans!
We want you to think, “I’m glad I asked!” Therefore, we take every request we receive seriously.
We also have information on roof construction 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!
・Aoba-ku, Yokohama | Roof Overlay (Cover Method) | We performed a cover method using Super Galtect!
・Aoba-ku, Yokohama | Roof Renovation! We implemented measures against leaks with roof painting!
・Aoba-ku, Yokohama | Roof Repair | We implemented measures against leaks by replacing ridge flashing!
・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 market price for roof renovations? Types of construction and how to choose a contractor, etc.
・We will introduce current roofing materials and renovation methods!
・Roof Renovation | What is Roofing? Introduction to Important Roofing Material: Roofing Sheets!
・What are the market prices 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)?
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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!
