Construction example

[Meguro-ku, Tokyo] | Roof Renovation | We performed a roof replacement using Super Galtect!

BEFORE


AFTER

Roofing Work Construction Data in Meguro-ku, Tokyo

Construction Location
 Aoba-ku, Yokohama
Construction Details
 Installation of Temporary Scaffolding
 Roof Replacement Work
Background to the Construction

We received an inquiry from a customer residing in Aoba-ku, Yokohama.

●Proposal Details
This time, we proposed Super Galtect, which excels in insulation and durability. Super Galtect has top-class insulation among metal roofs and is one-tenth the weight of tiles. We also proposed roofing and ridge materials that match the durability of Super Galtect.

Building Information and New Materials Used

●Building Information
 ・Existing Roofing Material: Colonial
 ・Two-story Wooden Detached House

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

● New materials used
 ・Roofing material: Super Galtect, durability of 35 to 40 years
 (Construction warranty: 10 years, manufacturer warranty: coating 15 years, rust 20 years, perforation 25 years)
 ・Roofing sheet: New Liner Roofing, durability of about 30 years
 ・Ridge base (nail board): Made of Galvalume steel, durability of about 30 years
 ・Sealing material used: Auton Exceed, durability of about 30 years

Price Range
 1,000,000 to 1,500,000
Construction Period
 About 1 week
Completion Month
 April 2025

Roof Replacement Construction Procedure

1. Dismantling Existing Roofing Material

We will dismantle the existing roofing material! After dismantling the ridge tiles, we will dismantle the mortar and flat tiles. After dismantling the tiles, we will also dismantle the wooden battens that hold the remaining tiles.

2. Roofing Installation (Waterproof Sheet)

Next, we will install the roofing sheet (waterproof sheet)! The roofing used isTajima Roofing/New Line Roofing! This is a top-quality underlayment that boasts unmatched 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.The expected durability is about 30 years!

3. Custom Fabrication (Kera and Karakusa)

Before the main roof construction, we will fabricate and install custom parts such as kera and karakusa!
The custom parts used are SGL steel plates.

4. Main Construction (Aiji Industrial/Super Galtect)

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After the custom fabrication, we will install the Galtect main body up to the ridge! After the custom fabrication, we will install the Galtect main body up to the ridge!
The fasteners used for the Galtect main body are genuine stainless steel renovation screws from Aiji Industrial!
Once the installation reaches the ridge, we will install necessary materials to secure the ridge board, known as the kanban. We offer three types of kanban: cedar, resin, and galvalume steel, and this time we usedgalvalume steel!
Galvalume steel is expected to havethree 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, demonstrating high waterproofing performance! It is ideal for the Super Galtect ridge base!

5. Ridge Cap Processing and Sealing

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 thoroughly apply sealing on the inside of the joints.
The screws used for fixation are made of rust-resistant stainless steel with waterproof packing!

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 will thoroughly remove items like nails and metal scraps that could cause injuries. We will also wipe away any footprints left on the roof to keep it clean.

About Roofing Materials

The roofing material used is the Super Galtect from Aji Industrial Co., Ltd.
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 tightly applied from edge to edge of the roofing material, creating a metal panel that integrates steel plate and insulation. During installation, insulation is applied even to the parts where the roofing materials hook together, and the surface is coated with high heat-reflective paint, allowing for a cool summer and a warm winter.
Additionally, it has soundproofing properties, reducing the sound of rain.
Being lightweight compared to other roofing materials, it also minimizes the sway during earthquakes, serving as an earthquake countermeasure. It excels in finish, durability, insulation, soundproofing, and wind resistance, and the Super Galtect from Aji Industrial Co., Ltd. is the most frequently used in our construction achievements and is receiving considerable 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, the cover work was done in Shade Brown, and it turned out very well!
The customer was also very satisfied!
Thank you very much!

Please check out other roofing work results from here!

Roof Material

Aiji Giken/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, Perforation 25 years
Expected Durability About 35 to 40 years
Color Used This Time

■Shade Brown
Shade Brown

For Roof Renovations in Meguro-ku, Tokyo, Trust Kakeru Koumuten!

Our company has extensive experience in roof renovations in Meguro-ku, Tokyo. We are happy to handle everything from roof overlay work, roof replacement, to partial roof repairs such as leak repairs.
If you have any questions or concerns like “I just want to know the estimate for roof renovations” or “I want to know about roofing materials,” please feel free to contact us!

Long-term Reliability

All the roofing materials we use come from reliable products that offer 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.
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.

Summary

This was our construction record for a roof replacement project in Meguro-ku, Tokyo!
We are happy to assist with partial roof repairs, including roof overlay work, roof replacement work, and leak repairs.

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

Kakeru Koumuten is a remodeling company strong in exterior renovations, and we carry out complete in-house construction from temporary scaffolding to roofing and exterior painting.
Regarding exterior renovation work, we are confident that we do not fall short compared to other companies in terms of “cost, quality, and efficiency”!

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 cost performance and our customers’ future life plans!

“I’m glad I asked them!” is what we aim for, and we take every request seriously.

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!

LINE consultations are also very welcome◎

We are regularly updating our Instagram◎Please follow us, thank you◎

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!