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 exterior renovations in Miyamae-ku, Kawasaki City. There are several types of exterior renovations, and this project involves a roof overlay (cover method) using heat-insulating sheets (Super Galtect) and joint replacement work!
We have implemented measures against leaks due to roofing work! On this page, we will explain the actual results of the work carried out by Kakeru Koumuten!
Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.
Joint Replacement Work Procedure
1. Removal of Existing Sealing Material
It is referred to as sealing, caulking, or joints. This area is crucial as it can easily lead to leaks and cause cracking or lifting of the siding. Cracks and peeling are signs of deterioration!
2. Preparation (Masking Tape Application)
3. Application of Primer
Apply
4. Filling the Sealant
Auton Exceed has about 3 times the durability of regular caulking materials (such as urethane and modified silicone). The expected durability is about 30 years. The cost will be approximately 50,000 to 100,000 yen higher for a building with a total floor area of 30 tsubo.
5. Finishing with a Trowel
6. Removing the Masking Tape
Roof Overlay Construction Procedure
1. Dismantling Existing Ridge and Snow Stops
2. Installation of Heat-Reflective Sheet
We will securely attach it to prevent it from blowing away.
3. Installation of Battens
4. Installation of Roof Sheathing
5. Installation of Roofing (Waterproof Sheet)
This underlayment boasts the highest quality, unmatched in both waterproofing and durability. By sandwiching a modified asphalt layer between non-woven fabric and base paper, it fully demonstrates the inherent performance of modified asphalt.
6. Fabrication of Accessories (Curlicue, Eaves, Valley)
The accessories used are genuine Galtect accessories made of SGL copper plate!
7. Main Construction (IG Industrial/Super Galtect)
Once the roofing is completed up to the ridge, we will install necessary materials called “nail boards” to secure the ridge metal. There are two types of nail boards: cedar and resin, and this time we used the resin type!
The resin type is expected to have twice the durability compared to the cedar type!
8. Fabrication of Ridge Metal and Sealing at Various Locations
9. Cleaning
What is the Roof Overlay Method?
The roof overlay method involves leaving the existing 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. Therefore, the roof becomes double-layered. This method is also referred to as “overlapping roofing” since the roofs are layered on top of each other.
Advantages of the Overlay Method
Since a “new roof” is placed over the “existing roof,” there is almost no need for demolition work, meaning that very little waste material is generated.
This is the main feature and leads to various advantages.
The only part that requires demolition and waste disposal is typically the ridge cap, making it more cost-effective compared to complete roof replacements.
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 structures built before 2004 contain asbestos. Asbestos-containing materials are difficult to demolish 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 may wonder, “Is it safe to live in a building that uses asbestos-containing materials?” 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, the construction can be completed in a shorter time frame compared to painting or complete roof replacements. 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 unusual environment.
When scaffolding is set up, 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 method is the most frequently performed service we offer. We are very grateful that we have been continuously engaged in roof overlay projects without interruption.
About Roofing Materials
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.
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 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.
Moreover, it is lightweight compared to other roofing materials, which minimizes the sway during an earthquake, providing earthquake resistance.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and the Super Galtect from Aijii Industrial is the most frequently used in our construction achievements, garnering 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 Charcoal!
The customer was very satisfied, and I was also very happy!
Thank you very much!
Please check out other roofing work achievements here!
| Roof Material |
|
|---|---|
| Manufacturer Warranty | Coating 15 years, Red Rust 20 years, Puncture 25 years |
| Expected Durability | About 40 years |
| Color Used This Time |
Shade Charcoal
|
Summary
With our extensive experience and solid knowledge in roof renovations in Miyamae-ku, Kakeru Koumuten Co., Ltd. has earned high trust from local customers.
Community-Based Service
We are an exterior renovation company located in Aoba-ku, Yokohama, and we have undertaken many roof renovations in the neighboring Miyamae-ku, deeply understanding the needs of our local customers. Whether it’s “I want it to last a long time with one renovation,” “I want to keep costs down,” or “I want to improve insulation because the indoors are hot,” we provide optimal solutions to specific requests.
Long-Term Reliability
All the roofing materials we use come from highly reliable products that offer long-term warranties. For example, the Super Galtect we used this time comes with a manufacturer warranty of 15 years for the coating and 25 years for perforation. 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 handle roofing materials with even higher durability and better insulation properties.
Leave Your Roof Renovation in Miyamae-ku, Kawasaki to Kakeru Koumuten!
We have extensive experience in roof renovations in Miyamae-ku.
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 strong renovation company specializing in exterior renovations, and we conduct complete in-house construction from temporary scaffolding to roofing and exterior wall painting.
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 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 can be found here!
・Miyamae Ward, Kawasaki City | Roof Overlay Method | We performed the overlay method with Super Galtect!
・Miyamae Ward, Kawasaki City | We performed a roof replacement using tiles to Super Galtect!
・Miyamae Ward, Kawasaki City | We performed a roof overlay 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 is the cost range for roof remodeling? Types of construction and how to choose a contractor, etc.
・Latest | About subsidies and grants available for remodeling, and reduction systems!
・How much does it cost for roof work? We will introduce the cost range!
・Remodeling store in Yokohama City, Kanagawa Prefecture | 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!
