Construction example

[Tachikawa City, Tokyo] | Roof Renovation | We performed a re-roofing project from slate roofing to Super Galtect!

BEFORE

AFTER

Tachikawa City, Tokyo | Construction Data

Construction Location
 Tachikawa City, Tokyo
Construction Details
 Temporary scaffolding installation
   Roof replacement
Inquiry Details

We received an inquiry from a customer in Tachikawa City, Tokyo.
“I am considering a roof replacement because the condition of my roof is not good. Please provide an estimate.”

Existing Substrate / Materials Used
 Existing roofing material: Slate
 Materials used for roof replacement: Super Galtect
Price Range
 900,000 to 1,000,000 yen
Construction Period
 Approximately 5 days
Completion Month
 October 2025

Roof Replacement Construction Procedure

1. Dismantling Existing Roofing Material

We will dismantle the existing roofing materials!


2. New Sheathing Installation

After dismantling the existing roofing materials, we will process and install new sheathing to fit the dimensions!

3. Roofing Installation (Waterproof Sheet)


 

Next, we will install the roofing sheet (waterproof sheet)! The roofing used isTajima Roofing / Tadi Self Cover.

We will securely 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 materials and the roof slope!

4. Accessory Processing (Karakusa and Keraba)

Before the main roofing work, we will process and install accessories such as keraba and karakusa! The materials used are SGL steel plates.

5. Main Construction (Aiji Industry / Super Galtect)

After processing the

fittings, we will install the Galttect main body up to the ridge! We will also perform metal work around the skylight! The fasteners used for the Galttect main body are genuine stainless steel renovation screws from Aijii Industrial Co., Ltd.!

Once we have installed up to the ridge, we will set up the necessary materials to secure the ridge board known as the “kanban.” Our company offers three types of kanban: cedar, resin, and galvalume steel, and this time we used galvalume steel!

Galvalume steel is expected to have three times the durability compared to cedar! Unlike resin and 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 fixing power, and excellent wind resistance!

Even if rainwater penetrates from the ridge into the interior, it has a mechanism to discharge rainwater to the outside, ensuring high waterproof performance!

It is ideal for the super Galttect ridge base!

6. Ridge Metal Processing and Sealing at Various Locations

We will process and install the

ridge metal. We will firmly apply sealing on the inside of the joints.

For the wall edges, we will process and install a component called rain stop metal.
The nails and screws used for fixing are made of rust-resistant stainless steel!

Pack screws, unlike nails, are less likely to pull out and
securely fix the ridge metal to the kanban!

 

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

7. Cleaning

We will clean up any debris that has fallen onto the balcony and rain gutters. We conduct this thoroughly as items like nails and metal scraps can lead to injuries. Additionally, we will wipe away any footprints left on the roof to ensure it is clean. [/chat]

Please check out other roofing project results here!

About Roofing Materials


The roofing material used is Ai-G Co., Ltd. / Super Galtect. Super Galtect comes with a 15-year paint 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 sheet that integrates the steel plate and insulation. During installation, 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.

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

It excels in finish, durability, insulation, soundproofing, and wind resistance, and our company has the most projects using Ai-G Co., Ltd.’s Super Galtect, making it highly regarded!

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 these 6 colors!

This time, the roof replacement work was completed very well with Shade Blue!

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

Please check out our other roofing project results here!

 

Roof Material

IG Kogyo/Super Galtect

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


Shade Blue

Shade Blue

Leave Your Roof Renovation in Tachikawa, Tokyo to Kakeru Koumuten!

Our company has extensive experience in roof renovations in Tachikawa, Tokyo.

We are happy to assist with roof overlay work, roof replacement, and partial roof repairs such as leak repairs.

“If you just want to know the estimate for roof renovation” or “If you want to know about roofing materials,”
please feel free to contact us with any questions or concerns!

As an exterior renovation company based in Kanagawa Prefecture, we handle many roof renovations in Tokyo and have a deep understanding of the needs of local customers.

“I want it to last long with just one renovation”

“I want to keep costs as low as possible”

“I want to improve insulation performance because the indoors are hot”

We provide optimal solutions for specific requests like these.

Conclusion

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 Co., Ltd. is a remodeling company strong in exterior renovations, and we perform everything from temporary scaffolding work to roof work and exterior 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!
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 feel, “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!

Areas We Serve for Exterior Renovations

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

List of Areas in Tachikawa City, Tokyo

Akocho, Tachikawa City / Izumicho, Tachikawa City / Ichibanchō, Tachikawa City / Kashiwachō, Tachikawa City / Kamisuna, Tachikawa City / Saiwaichō, Tachikawa City / Eicho, Tachikawa City / Shibazakichō, Tachikawa City / Sunagawa, Tachikawa City / Takamatsuchō, Tachikawa City / Nishinasachō, Tachikawa City / Hagoromochō, Tachikawa City / Fujimimachi, Tachikawa City / Midorimachi, Tachikawa City / Wakabachō, Tachikawa City

We welcome inquiries via LINE as well◎

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!