Construction example

[Akiruno City, Tokyo]|We have completed the re-roofing work from a slate roof with a skylight to Super Galtect!

BEFORE

AFTER

Construction Data for Akiruno City, Tokyo

Construction Location
Akiruno City, Tokyo
Construction Details

Temporary scaffolding installation
Roof replacement

Inquiry Details

We received an inquiry from a customer in Akiro, Tokyo.
“I am considering installing solar panels, so I plan to have a roof replacement work done. I will be getting multiple estimates, so please provide a quote.”

Existing Base/Materials Used

Existing roofing material: Slate

Materials used for roof overlay (cover method): Super Galtect

Price Range
 800,000 to 900,000 yen
Construction Period
 Approximately 7 days
Completion Month
 July 2025

Roof Replacement Construction Procedure

1. Dismantling Existing Roofing Materials


We will dismantle the existing roofing materials!

2. Laying Roofing (Waterproof Sheet)

Next, we will install the roofing sheet (waterproof sheet)! The roofing used isTajima Roofing / Tadi Self Cover.
We will firmly attach this to prevent it from being 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 of the new roofing material and the roof slope!

3.Accessory Processing (Karakusa and Keraba)


Before the main roof construction, we will process and install accessories such as keraba and karakusa!
The accessories used are made of SGL steel plate.

4.Main Construction (Aijii Industry / Super Galtect)

After processing the accessories, we will install the Galtect main body up to the ridge! We will also perform metalwork around the skylight!
The fasteners used for the Galtect main body are genuine stainless steel renovation screws from Aijii Industry!

Once we have installed up to the ridge, we will install the necessary materials to fix the ridge board, known as the kanban. We offer three types of kanban: cedar, resin, and galvalume steel, and this time we used galvalume steel!

Galvalume steel has an expected 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 the ridge base is highly durable, has strong fixation, and excellent wind resistance!

Even if rainwater seeps in from the ridge, it has a mechanism to discharge rainwater to the outside, providing high waterproof performance!

It is perfect for the Super Galtect ridge base!

5. Ridge Cap Processing and Sealing at Various Locations


We will process and install the ridge cap. We will thoroughly apply sealing on the inside of the joints.
We will process and install a component called rain stop metal at the wall edge.
We use stainless steel nails and screws 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 wood!

 

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

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 away any footprints left on the roof to ensure it is clean.

Please check out other roofing construction achievements from here!

About Roofing Materials

The roofing material used is the Super Galtect from Aijii Industry.
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, 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 warm winter experience.
Additionally, it has soundproofing properties, reducing the sound of rain.
Moreover, it is lightweight compared to other roofing materials, which minimizes the sway during earthquakes, providing earthquake resistance.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and the Super Galtect from Aijii Industry is the most frequently used in our construction achievements, gaining significant attention!

Colors

■ 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 6 colors!

This time, we completed a roof replacement project in Black, and it turned out exceptionally well!

Thank you very much for choosing Kakeru Koumuten Co., Ltd.!

Please check out other roofing project results here!

 

Roof Material

IG Kogyo/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 Black

Shade Black

Leave your roof renovation in Akiruno, Tokyo to Kakeru Koumuten Co., Ltd.!

We have extensive experience in roof renovations in Akiruno, Tokyo.
We are happy to assist with roof overlay work, roof replacement, and even partial roof repairs such as 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!

We are an exterior renovation company based in Kanagawa Prefecture, and we have handled many roof renovations in Tokyo, deeply understanding the needs of our 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.

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 Kanagawa Prefecture!

Kakeru Koumuten is a renovation company strong in exterior renovations, and we perform all work from temporary scaffolding to roofing and exterior painting in-house.
We are confident that our “cost, quality, and efficiency” are unmatched compared to other companies!

We are confident in our exterior renovations, so we welcome competitive estimates!
We offer comprehensive construction guarantees 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 (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!

Areas We Serve for Exterior Renovations

Kakeru Koumuten accepts requests throughout Kanagawa Prefecture and all of Tokyo.

List of Areas in Akiruno City, Tokyo

Akiruno City Akigawa / Akiruno City Akirume / Akiruno City Ajiro / Akiruno City Aburahira / Akiruno City Amama / Akiruno City Itsukaichi / Akiruno City Ina / Akiruno City Irino / Akiruno City Kamino-dai / Akiruno City Ushinuma / Akiruno City Ogawa / Akiruno City Ogawa Higashi / Akiruno City Otsutsu / Akiruno City Kamidaisuke / Akiruno City Kirikake / Akiruno City Kusabana / Akiruno City Konakano / Akiruno City Kominedai / Akiruno City Kowada / Akiruno City Sannai / Akiruno City Shimodaisuke / Akiruno City Sugao / Akiruno City Seto-oka / Akiruno City Takao / Akiruno City Tateya / Akiruno City Tateya-dai / Akiruno City Togura / Akiruno City Tomohara / Akiruno City Ninomiya / Akiruno City Ninomiya Higashi / Akiruno City Nobe / Akiruno City Hara Komiya / Akiruno City Hikida / Akiruno City Hirasawa / Akiruno City Hirasawa Nishi / Akiruno City Hirasawa Higashi / Akiruno City Fukazawa / Akiruno City Fuchigami / Akiruno City Yamada / Akiruno City Yosawa / Akiruno City Yokozawa

 

Consultations via LINE are also very welcome◎

LINE

LINE

We are also updating our Instagram regularly◎ Please follow us◎

Instagram
Instagram
 

 

 
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!