Hello!
I am 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 a roof renovation project in Konan-ku, Yokohama, Kanagawa Prefecture.
The work involved a roof overlay (cover method) (Super Galtect) for leak prevention!
We received a request from Company R, a remodeling company we always work with!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.
Roof Overlay (Cover Method) Construction Procedure
1. Demolition of Existing Ridge and Snow Stops
We will dismantle only the ridge cap and snow guards that may obstruct the roof overlay work.
2. 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. Custom Fabrication (Karakusa and Keraba)
We will process and install the keraba and karakusa.
4. Main Construction
Once the main body is installed, we will place the purlins at the ridge and wall edges. This time, we used cedar purlins, but there are also purlins made of corrosion-resistant resin.
5. Ridge Cap Fabrication
We will process and install the ridge cap. We will firmly apply sealing on the inside of the joints.
For the wall edge, we will process and install a component called rain guard metal.
6. Cleaning
We will remove footprints and any debris that may have fallen around the house and inside the rain gutters, followed by a thorough cleaning.
We strive to ensure that the area is cleaner after the work than it was before!
That concludes the construction!
The roofing material used is the Super Galtect from Aijii Industrial.
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 sheet that integrates the steel plate and insulation.
When installed, insulation is applied even to the parts where the roofing materials overlap, and the surface is coated with a highly heat-reflective paint, allowing for a cool summer and a warm winter.
Additionally, it has soundproofing properties, reducing the sound of rain.
Being lighter than other roofing materials, it also reduces the sway during earthquakes, contributing to earthquake resistance.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and our construction records show that Aijii Industrial’s Super Galtect is the most frequently used, gaining significant attention!
Color
■Shade Black
■Shade Brown
■Shade Blue
■Shade Moss Green
■Shade Charcoal
You can choose from these 5 colors!
This time, the cover work with Shade Black turned out exceptionally well!
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 roof is layered, it 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 material is produced.
This is its most significant feature, leading to various advantages.
The only part that requires demolition and waste disposal is 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 refer to the Ministry of Health, Labour and Welfare website).
Some building materials used in structures built before 2004 contain asbestos. Asbestos-containing materials are difficult to demolish due to their high environmental impact, and the costs for demolition and waste disposal are also high. The overlay method, which produces 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 with 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 overall cost more affordable.
This also reduces the psychological anxiety of having to live in an environment that is different from usual.
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 certainly 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.
For roof renovations in Konan-ku, Yokohama, trust Kakeru Koumuten Co., Ltd.!
Our company is based in Yokohama, and we have a wealth of experience in roof renovations in Konan-ku, Yokohama.
We are happy to assist with everything from roof overlay work, roof re-roofing, to partial roof repairs such as leak repairs.
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!
Community-Focused Service
As an exterior renovation company based in Aoba-ku, Yokohama, we have handled many roof renovations in Yokohama and have a deep understanding of the needs of local customers.
“I want it to last a long time with just one renovation”
“I want to keep costs as low as possible”
“I want to improve insulation because the indoors are hot”
We provide optimal solutions for specific requests like these.
Long-Term Reliability
All roofing materials we use come from reliable manufacturers that offer long-term warranties. For example, the Super Galtect we are using this time comes with a 15-year coating warranty and a 25-year hole warranty. We also provide a 10-year construction warranty, allowing you to use it with peace of mind for a long time after just one renovation.
Galtect is a lightweight roofing material that excels in durability and cost performance, but we also offer roofing materials with even higher durability and better insulation properties.
Conclusion
We are happy to assist with roof overlay work, roof re-roofing, and partial roof repairs such as leak repairs.
Estimates and inspections are, of course, free! If you have any concerns regarding roofs, rain gutters, exterior walls, or exterior structures, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!
Kakeru Koumuten Co., Ltd. is a strong renovation company specializing in exterior renovations, and we carry out all work from temporary scaffolding to roofing and exterior wall 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!
With comprehensive construction warranties and aftercare maintenance, we have received positive feedback for our appropriate proposals that align with cost performance and our customers’ future life plans!
“I’m glad I chose you!” We take every request seriously to ensure you feel this way.
We have also published information on roofing 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!
・Minami-ku, Yokohama｜We performed roof overlay and rain leak measures using Super Galtect!
・Minami-ku, Yokohama｜Mr. K’s residence｜We performed roof overlay and rain leak measures using Super Galtect!
・Aoba-ku, Yokohama｜Kakeru Koumuten｜Roof inspection using a drone!
・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.
・Latest! Grants and subsidies available for renovations, and reduction systems!
・How much does it cost for roof work? We will introduce the cost range!
・What is the cost range for rain gutter repair and cleaning? Tips on timing, fire insurance, and choosing a contractor!
・Kanagawa Prefecture, Yokohama City Renovation Store | 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!
