Construction example

[Tokyo, Nishitama-gun] We performed a re-roofing project for the main roof and the lower roof of the Sabari NEO using Super Galtect!

BEFORE

AFTER

Nishitama-gun, Tokyo | Construction Data

 約2週間  About 1 week Completion Month  April 2025

Roof Replacement Construction Procedure

1. Dismantling Existing Roofing Materials

First, we will dismantle the existing roofing materials! The existing roofing material is the Keimyuu / Savary NEO, which is not recommended. Savary NEO is a brittle non-asbestos roofing material!

2. Installing Roofing (Waterproof Sheet)

Next, we will install the waterproof sheet! The roofing used is Tajima Roofing / New Liner Roofing, which is a highly durable non-woven fabric roofing material!

If the roofing is properly installed, it generally won’t leak! We will ensure it is securely attached so it won’t be blown away by the wind.

Since there are various durability years and characteristics for roofing sheets, it is important to choose a roofing sheet that matches the durability years of the new roof and the roof slope!

3.Accessory Processing (Karakusa and Keraba)

Before the installation of the main roof, we process and install accessories such as keraba and karakusa. The accessories used are genuine parts from Galttect, made of SGL steel plate! The metal fittings at the ridge are our original galvalume steel plate, forming an integrated base for the ridge. It has a durability of approximately 30 years and provides high wind resistance at the ridge base.

4. Main Construction (Aijii Industry / Super Galttect)

After processing the accessories, we will install the Galttect main body up to the ridge! The fasteners used for the Galttect main body are stainless steel renovation screws, genuine products from Aijii Industry!

Once the installation reaches the ridge, we will set up the necessary materials to secure the ridge cap, known as the kanban. We offer three types of kanban: cedar, resin, and galvalume steel plate, and this time we used the galvalume steel plate! The galvalume steel plate is expected to have three times the durability compared to cedar! Unlike resin or cedar, it does not crack, providing peace of mind!

Our original integrated waste board made of Galvalume steel for ridge underlayment is
highly durable, has strong fixation, and excellent wind resistance!
Even if rainwater seeps in from the ridge, it is designed to discharge rainwater to the outside,
thereby demonstrating high waterproofing performance!
It is perfect for the Super Galtect ridge underlayment!

5. Ridge Cap Processing and Sealing at Various Locations

We will process and install the ridge cap. To enhance waterproofing, we will install a face plate on the inside of the ridge! We will firmly apply sealing on the inside of the joints. We will use stainless steel screws with waterproof packing that are resistant to rust for fixation!

Unlike nails, screws with packing are less likely to come loose and securely fix the ridge cap to the purlin!

 

Although it is not visible after construction,
installing a face plate on the inside of the ridge cap enhances waterproofing!
It firmly protects the ridge, which is a critical point of the roof.

6. Cleaning

After the roofing work is completed, we will clean up any debris that has fallen onto the balcony or rain gutters. We thoroughly remove items like nails and metal scraps, as they can cause injuries. Additionally, we will wipe away any footprints left on the roof to ensure it looks pristine.

About Roofing Materials

The roofing material used is Ai-Gi Kogyo / Super Galtect. Super Galtect comes with a 15-year coating warranty and a 25-year hole warranty from the manufacturer, along with a 10-year construction warranty from our company! Additionally, it is made of SGL steel, which is resistant to rust.

The insulation material is tightly applied from edge to edge of the roofing material, creating a metal panel that integrates steel and insulation. During installation, insulation is applied even to the parts where the roofing materials overlap, and the surface is coated with a highly heat-resistant paint, allowing for a cool summer and a warm winter.

Moreover, it also has soundproofing properties, reducing the sound of rain. Being lighter than other roofing materials, it minimizes the sway during earthquakes, providing earthquake resistance.

It excels in finish, durability, insulation, soundproofing, and wind resistance, and Super Galtect from Ai-Gi Kogyo is the most frequently used in our construction achievements and is gaining considerable 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, we completed the cover work with Shade Charcoal, and it turned out very well!
The customer was extremely satisfied, and I was very happy too!
Thank you very much!

Roof Material

IG Kogyo / Super Galtect

Manufacturer Warranty Coating 15 years, Red rust 20 years, Perforation 25 years
Expected Durability Approximately 35 to 40 years
Color Used This Time


Shade Charcoal

Shade Charcoal

 

Please check out our other roofing project achievements here!

Leave Your Roofing Work in Nishitama-gun, Tokyo to Kakeru Koumuten!

Our company is based in Yokohama, but we also have extensive experience in roofing renovations in Nishitama-gun, Tokyo.

We are happy to assist with everything from roof overlay work, roof replacement, 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!

List of Areas in Nishitama-gun

【Mizuho Town】
Ishihata, Mizuho Town / Komagat富士山, Mizuho Town / Takane, Mizuho Town / Tonogaya, Mizuho Town / Nagaoka Shimo, Mizuho Town / Nagaoka Nagasebe, Mizuho Town / Nagaoka Fujihashi, Mizuho Town / Nagaoka, Mizuho Town / Nihongi, Mizuho Town / Hakonegasaki, Mizuho Town / Hakonegasaki Nishimatsubara, Mizuho Town / Hakonegasaki Higashimatsubara, Mizuho Town / Fujisan Kurihara Shinden, Mizuho Town / Minamihei, Mizuho Town / Musashi, Mizuho Town / Musashino, Mizuho Town

【Hinode Town】
Okuno, Hinode Town / Hirai, Hinode Town

【Hinohara Village】
Ozawa, Hinohara Village / Kazuma, Hinohara Village / Kobe, Hinohara Village / Kamimoto, Hinohara Village / Kurakake, Hinohara Village / Shimomoto, Hinohara Village / Nangō, Hinohara Village / Hizato, Hinohara Village / Fujiwara, Hinohara Village / Hitosato, Hinohara Village / Mito, Hinohara Village / Honjuku, Hinohara Village

[Okutama Town]
Okutama Town Umizawa / Okutama Town Umezawa / Okutama Town Ootanba / Okutama Town Kawai / Okutama Town Kawano / Okutama Town Kawachi / Okutama Town Kodanba / Okutama Town Sakae / Okutama Town Shiramaru / Okutama Town Tanazawa / Okutama Town Dansaburo / Okutama Town Tomeura / Okutama Town Hibara / Okutama Town Hara / Okutama Town Koori

Long-term Reliability

All roofing materials we use are highly reliable products that come with long-term warranties. For example, the Super Galtect we used this time comes with a 15-year paint warranty and a 25-year hole warranty from the manufacturer. We also provide a 10-year construction warranty, so you can use it with peace of mind for a long time after just one renovation.

Super 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, so please feel free to consult us.

Summary

Estimates and inspections are, of course, free!
If you have any concerns regarding roofs, rain gutters, exterior walls, or exteriors, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!

Kakeru Koumuten has become a strong renovation company specializing in exterior renovations, performing complete in-house construction from temporary scaffolding to roofing and exterior painting. We are confident that our “cost, quality, and planning efficiency” are unmatched compared to other companies!

We are confident in our exterior renovations, so we welcome competitive estimates! Our construction warranties and aftercare services are comprehensive, 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 roof overlay methods, 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!

Consultations via LINE are also very welcome◎

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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!