Construction example

Yokohama City | Tsuzuki Ward | N’s Residence | Performed roof overlay using Super Galtect and replaced the Kiri-Yoke (eaves) metal work!

BEFORE

AFTER

Hello!
We are 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 Tsuzuki-ku, Yokohama.
There are several types of exterior renovations, and this project involves a roof overlay (cover method) using Super Galtect!
We implemented measures against leaks through the roofing work!

On this page, we will explain the actual results of the work carried out by Kakeru Koumuten!

This residence also underwent exterior wall painting work!

⇩ Click here for exterior wall painting project results ⇩

Thank you very much for choosing Kakeru Koumuten Co., Ltd. from among many contractors.

Roof Overlay Construction Procedure

1. Disassembly of Existing Roof Ridge Flashing

We will disassemble unnecessary existing roofing materials (ridge flashing, snow guards) for the overlay method!The durability of wooden purlins is about 10 to 15 years. Exceeding the durability period can lead to corrosion and discoloration, resulting in the ridge flashing coming loose or being blown away.

2. Installation of Roofing (Waterproof Sheet)

The roofing used is Nissin Kogyo/Kappa 23!
It is made of modified asphalt roofing material, which is said to have double the durability of regular asphalt roofing.
With a solid roofing layer serving as the primary waterproofing, there will be no leaks!
We will ensure it is firmly attached to prevent it from blowing away.

3. Fabrication of Components (Karakusa, Keraba, Valley)


Before the main roofing work, we will fabricate and install components such as keraba, karakusa sheet metal, and valleys!

The components used are genuine Galtect components made of SGL copper plate!

4. Main Construction (Aiji Industry/Super Galtect)


After fabricating the components, we will lay the Galtect roofing up to the ridge!
Once the roofing is completed up to the ridge, we will install the necessary materials to secure the ridge board, known as the kanban. There are types of kanban made of cedar and resin, and this time we used resin! The resin type is expected to have three times the durability compared to the cedar type!

5. Ridge Cap Fabrication & Sealing at Various Locations


Next, we will process and install the ridge cap. We will thoroughly apply sealing on the inside of the joints. At the wall edge, we will process and install a component called a rain guard metal.
We use stainless steel nails and screws that are resistant to rust!

6. Cleaning


We will clean up the debris that has fallen onto the balcony and rain gutters. We will thoroughly remove items like nails and metal scraps that could cause injuries. Additionally, we will wipe off any footprints left on the roof to keep it clean.

Installation Procedure for Kiryoke (Eaves) Metal Work

1. Dismantling Existing Kiryoke Metal

We will dismantle the unnecessary existing Kiryoke metal.

2. Installing New Sheathing Boards

We will process and install new sheathing boards according to the dimensions!

3. Installing Roofing (Waterproof Sheet)

The roofing used is Tajima Roofing/Tadis Self!
It is made of a delayed adhesion modified asphalt roofing material, which is said to have double the durability of regular asphalt roofing.
As a primary waterproofing measure, if the roofing is solid, there will be no leaks!
We will securely adhere it to prevent it from blowing away.

4. Custom Fabrication

We will process and install custom pieces such as arabesques! (Sorry for the same photo…)

5. Flat Sheet Metal Processing

The custom pieces used are made of Galvalume steel! Since they are flat sheets made of Galvalume steel, they are resistant to rust! The finishing will be done with caulking!

About Roofing Materials

Ai-Gi Industry/Super Galtect

The roofing material used is Ai-Gi Industry’s Super Galtect.
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 SGL steel, it is also resistant to rust.
Insulation material is thoroughly applied from edge to edge of the roofing material, creating a metal sheet 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 highly heat-reflective paint, allowing for a cool summer and warm winter.
Additionally, it has soundproofing properties, reducing the sound of rain.
Being lighter than other roofing materials, it reduces the sway during earthquakes, providing earthquake resistance.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and our construction records show that Ai-Gi Industry’s Super Galtect is the most frequently used, gaining significant attention!

Color

■Shade Black
Shade Black
■Shade Brown
Shade Brown
■Shade Blue
Shade Blue
■Shade Moss Green
Shade Moss Green
■Shade Charcoal
Shade Charcoal

New Color Shade Wine Red

You can choose from these 6 colors!

This time, the cover work with Shade Wine Red turned out exceptionally well!
The customer was very satisfied, and I was also very happy!
Thank you very much!

Please check out other roofing work achievements from here!

 

Roof Material

Aiji Giken/Super Galtect

Awarded by the Minister of Education, Culture, Sports, Science and Technology and the National Invention Award for Super Galtect
Manufacturer Warranty Coating 15 years, Red rust 20 years, Puncture 25 years
Expected Durability About 40 years
Color Used This Time

Shade Wine Red

 

Trust Kakeru Koumuten for Roof Renovations in Tsuzuki-ku, Yokohama!

Our company has extensive experience in roof renovations in Tsuzuki-ku.
We are happy to assist with everything from roof overlay work, roof replacement, to partial roof repairs such as leak fixes.
“I just want to know the estimate for the roof renovation,” “I want to know about roofing materials,” and any other questions or concerns you may have, please feel free to contact us!

Community-Focused Service

As a home exterior renovation company based in Aoba-ku, Yokohama, we have handled many roof renovations in nearby Tsuzuki-ku and have a deep understanding of the needs of local customers. Whether you want to “make it last long with one renovation,” “keep costs down as much as possible,” or “improve insulation because the indoors are hot,” we provide optimal solutions for your specific requests.

Long-Term Reliability

All roofing materials we use are reliable products that offer long-term warranties. For example, the Super Galtect used this time comes with a 15-year coating warranty and a 25-year puncture warranty. Additionally, we provide a 10-year construction warranty, allowing you to use your roof 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

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 organization”!

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 them!” Therefore, we take every request seriously and work diligently on it.

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!

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For roofing, guttering, and exterior work and repairs in Kanagawa, contact Kakerukoumuten Co., Ltd..

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!