[Asao-ku, Kawasaki] | Roof Repair | Performed Solar Panel Removal and Roof Overlay (Cover Method)!

BEFORE

AFTER

Hello!
We are Kakeru Koumuten Co., Ltd., specialists in roofing, exterior wall painting, and exterior renovations located in Aoba-ku, Yokohama, Kanagawa Prefecture!
This is a case study of exterior renovations in Asao-ku, Kawasaki City.
This roof repair involves the roof overlay (cover method) using Super Galtect and solar panel removal and reinstallation!

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

We often receive requests for solar panel removal and reinstallation only.
Please leave the solar panel removal and reinstallation associated with roof painting or roof overlay work to us!

We can also handle the removal and disposal of solar panels that are not in use due to malfunction!

Construction Data for Asao-ku, Kawasaki City

Roof Overlay Construction Procedure

1. Removal of Solar Panels

We will dismantle the solar panels and the base brackets. The removed solar panels will be carefully stored in our warehouse for reuse. The existing base brackets are designed for slate and require direct holes to be made in the roof, so they will be disposed of. The holes left by the brackets will be sealed and repaired with caulking. We will also dismantle any unnecessary existing ridge flashing and snow stops!

The existing roofing material, Resas, is very brittle and there is a risk of the roof collapsing while walking on it, so caution is necessary.

2. Roofing Installation (Waterproof Sheet)

We will lay the roofing sheet (waterproof sheet) on top of the underlayment! Theroofingused isTajima Roofing/Tadis Self Cover!
Tadis Self Cover is a roofing sheet specifically designed for the overlay method, as the name suggests. When covering fragile slates like Resas or Colonial NEO, we recommend using the dedicated roofing sheet, Tadis Self Cover! It is said to have three times the durability of regular asphalt roofing, with a lifespan of about 30 years. It is a self-adhesive roofing with high waterproofing properties and has a durability close to Super Galtect, so you can rest assured!
As a primary waterproofing measure, if the roofing is properly installed, there will be no leaks! We will securely adhere it with steel plate chips to prevent it from blowing away.

3. Custom Fabrication (Kera and Karakusa)

Before the main roof construction, we will process and install the custom parts such as kera and karakusa!
The custom parts used are the genuine parts of Galtect made from SGL copper plate!

4. Main Construction (Aiji Industry/Super Galtect)

After processing the components, we will install the Galtect main body up to the ridge!
Once it is installed up to the ridge, we will set up the necessary materials to secure the ridge board called “kanban.” We offer three types of kanban: cedar, resin, and galvalume steel, and this time we used the galvalume steel version!
The galvalume steel version is expected to have three times the durability compared to the cedar version! Unlike the resin and cedar versions, it does not crack, so it is safe!

5. Ridge Cap and Sealing at Various Locations

After installing the kanban, we will process and install the ridge cap. We will firmly apply sealing on the inside of the joints.

The screws used for fixing are made of stainless steel, which is resistant to rust!

6. Installation of Solar Panel Mounting Brackets

We will install the mounting brackets for the solar panels that we have kept for reuse! The existing base was fixed by drilling holes in the roof, but the new brackets will catch onto the Galtect main body to secure the solar panels. This method reduces the risk of leaks and the burden on the roof since no holes are drilled.
There are applicable brackets for each manufacturer and model of solar panels. There may be no applicable brackets for older solar panels

7. Installation of Solar Panels

We will complete the process by reinstalling the removed solar panels! Finally, we will also check to ensure they are generating power properly.

8. Cleaning

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

About Roofing Materials

The roofing material used is Aijii Industrial’s Super Galtect.
Super Galtect comes with a 15-year warranty on the coating and a 25-year warranty against 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 areas where the roofing materials overlap, and the surface is coated with a high heat-reflective paint, allowing for a cool summer and warm winter.
It also has soundproofing properties, reducing the sound of rain.
Additionally, it is lighter compared to other roofing materials, which reduces the sway during earthquakes, providing earthquake resistance.
It excels in finish, durability, insulation, soundproofing, and wind resistance, and among our construction achievements, Aijii Industrial’s Super Galtect is the most frequently used and is highly regarded!

Color

■Shade Black

■Shade Brown

■Shade Blue

■Shade Moss Green

■Shade Charcoal

■New Color Shade Wine Red

You can choose from these 6 colors!

This time, the cover work was done in Shade Moss Green, and it turned out exceptionally well!
The customer was very satisfied, and I was also very happy!
Thank you very much!

Please check out other roofing work achievements from here!

Roof Material	Aiji Giken/Super Galtect
Manufacturer Warranty	Coating 15 years, Red rust 20 years, Puncture 25 years
Expected Durability	About 40 years
Color Used This Time	Shade Moss Green

What is the Roof Overlay (Cover Method)?

The roof overlay method involves leaving the current roof almost as it is and placing a new roof on top of it, effectively covering it.
Literally, it is a method of covering a roof with another roof. Therefore, the roof becomes double-layered. Since the roof is laid over itself, it is also referred to as “overlapping roofing.”

Advantages of the Overlay Method

Since a “new roof” is placed over the “current roof,” demolition work is almost unnecessary, meaning that very little waste is generated.
This is its most significant feature, leading to various advantages.

The only parts that require demolition and waste disposal are the ridge flashing, so compared to re-roofing, the cost is lower.
In 2004, regulations regarding the concentration of asbestos in raw materials were changed (for details, please refer to the Ministry of Health, Labour and Welfare website).
Building materials used in structures constructed before 2004 may contain asbestos. Asbestos-containing materials are difficult to demolish due to their high environmental impact, and the costs for demolition and waste disposal are also high. The overlay method, which generates almost no waste, is ideal for such roofs.

Some may wonder, “Is it safe to live in a building that uses asbestos-containing materials?” but rest assured. As long as there is no destruction or crushing, it will not disperse into the air.
If you are unsure about the type of roof on your home, please feel free to consult with us.

Additionally, we can complete the work in a shorter period than painting or re-roofing. A shorter construction period means lower labor costs, which in turn makes the expenses cheaper.
The psychological anxiety of having to live in a different environment is also reduced.
When scaffolding is set up, there may be inconveniences such as difficulty in entering and exiting or opening windows. Being able to return to normal life in a short period is certainly a significant advantage.

Our company specializes in roofing work, and the roof overlay (cover method) is the most frequently performed service we offer. We are very grateful that we have been continuously engaged in roof overlay (cover method) projects without interruption.

Leave your roof repairs in Aso-ku, Kawasaki to Kakeru Koumuten!

Community-focused Service

As an exterior renovation company based in Aoba-ku, Yokohama, we handle many roof renovations in the neighboring Aso-ku and have a deep understanding of the needs of local customers.

Aso-ku, Kawasaki has a varied topography with many highlands and lowlands. We recommend using wind-resistant roofing materials in highland areas where wind exposure is significant!

Whether you want to “make it last long with one renovation,” “keep costs down as much as possible,” or “improve insulation because the indoors are hot,” we will propose the optimal plan for your specific requests!

Summary

These are our construction achievements for roof repairs in Aso-ku, Kawasaki!
We handled all aspects including scaffolding setup, solar panel removal and reinstallation, and roof overlay (cover method) in-house!
The existing roofing materials are very prone to cracking among roofing materials that cannot be painted, so if you are considering roof repairs, be sure to choose either the overlay method or re-roofing!
If you paint the roof, it may crack immediately, rendering the painting costs wasted.

When renovating roofs with solar panels, the cost of solar panel removal and reinstallation can add up, so we recommend using durable roofing materials that will last long with one renovation!
There may be cases where the new roofing materials cannot accommodate the existing solar panel layout, so be sure to confirm with the contractor!

Estimates and inspections are, of course, free!

If you have any concerns regarding ‘roof, rain gutter, exterior walls, or exterior structures’ in Aso-ku, Kawasaki, please consult Kakeru Koumuten Co., Ltd. in Aoba-ku, Yokohama!

Kakeru Koumuten is a renovation company strong in exterior renovations, and we perform scaffolding work, roofing work, and exterior wall painting completely in-house.
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 comprehensive construction guarantees and aftercare services, 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!” 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!

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