Construction example

Kanagawa-ku, Yokohama | Roofing Work & Roof Replacement | We have completed a roof replacement using tiles and Super Galtect!

BEFORE

AFTER

Hello!
We are Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
This is a case study of an exterior renovation project in Kanagawa-ku, Yokohama.
For this roofing renovation, we performed a roof overlay (cover method) using Super Galttect!
The roof overlay involves dismantling and removing the existing roofing materials and replacing them with new roofing to prevent leaks.

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

Kanagawa-ku, Yokohama, Mr. K’s House – Construction Data

Construction Location
 Aoba-ku, Yokohama
Construction Details
・Temporary scaffolding installation・Roof replacement work
Existing Base
Roof: Tile
New Materials Used
Roof: Super Galtect
Price Range
1,000,000 – 1,500,000
Construction Period
 17 days
Completion Month
 January 2024

Roof Replacement Construction Procedure

1. Dismantling Existing Roofing Materials


We will dismantle the existing roofing materials!

2. Installing New Sheathing


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

3. Installing Roofing (Waterproof Sheet)

Next, we will install the roofing sheet (waterproof sheet)! The roofing used is Tajima Roofing/New Liner Roofing!
This underlayment material boasts the highest quality, excelling in both waterproofing and durability, leaving others behind. By sandwiching the modified asphalt layer between non-woven fabric and base paper, it fully demonstrates the performance of the modified asphalt.
The expected durability is approximately 30 years!

4. Fabricating Accessories (Curlicue & Eaves)


Before the main roof construction, we will process and install components such as eaves and ornamental brackets!
The components used are made of SGL steel plate.

5. Main Construction (Aijii Industry/Super Galtect)

After processing the components, we will install the Galtect main body up to the ridge! After processing the components, we will install the Galtect main body up to the ridge! We will also perform metal work around the skylight!
Once the installation reaches the ridge, we will install necessary materials called “nuki-bari” to secure the ridge cap. There are types of nuki-bari made of cedar and resin, and this time we used the resin type!
The resin type is expected to have twice the durability compared to the cedar type!

6. Ridge Cap Processing and Sealing


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 “ameosae-bakin” (rainwater guard).
We will use stainless steel nails and screws that are resistant to rust for securing!

7. Cleaning

Cleaning

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

Procedure for Kiryoke (Eave) Metal Work

1. Demolition of Existing Kiryoke

We will remove the existing Kiri-Yoke metal.

2. New Roof Sheathing and Preservative

We will cut and install the new roof sheathing to fit the dimensions!

3. Roofing Installation (Waterproof Sheet)

The roofing used is Tajima Roofing/Tadis Self!
It is made of a delayed adhesive 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 properly installed, there will be no leaks!
We will ensure it is securely attached to prevent it from blowing away.

4. Custom Fabrication

We will process and install custom pieces such as arabesques!

5. Sealing

The metal used is made of Galvalume steel! Since it is a flat sheet made of Galvalume steel, it is resistant to rust! We will apply caulking treatment at the wall edges to complete the work! The new flat sheet is JFE Steel/Extreme MAX. The manufacturer guarantees a 15-year coating warranty and a 25-year hole warranty!

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.
We also provide 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 plate 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 high heat-reflective paint, allowing for a cool summer and a warm winter.
Additionally, it has soundproofing properties, reducing the sound of rain.
Moreover, it is lightweight compared to other roofing materials, which reduces the sway during earthquakes, making it a good earthquake countermeasure.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and the Super Galtect from Aijii Industry is the most commonly 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 Black, and it turned out very well!
The customer was very satisfied, and I was also very happy!
Thank you very much!

Please check out other roofing work examples from here!

 

Roof Material

Aijii 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, Hole 25 years
Expected Durability About 40 years
Color Used This Time

Shade Black

Shade Black

 

For roof renovations in Kanagawa-ku, Yokohama, trust Kakeru Koumuten!

Our company is based in Yokohama, and we have extensive experience in roof renovations in Kanagawa-ku, Yokohama.
We are happy to assist with roof overlay work, roof replacement, and partial roof repairs such as leak repairs.
If you have any questions or concerns, such as “I just want to know the estimate for roof renovation” or “I want to know about roofing materials,” please feel free to contact us!

Community-Focused Services

We are an exterior renovation company based in Aoba-ku, Yokohama, and we have handled many roof renovations in Yokohama, 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 performance because the indoors are hot

We provide optimal solutions to specific requests like these.

Long-Term Reliability

All 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 coating 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 offer roofing materials with even higher durability and better insulation properties.

Summary

We have a wealth of experience in roof renovations in Kanagawa-ku.
We are happy to assist with partial roof repairs such as 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 exteriors, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!

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

We are confident in our exterior renovations, so we welcome competitive estimates!
We offer robust 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 for this!” 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 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!