BEFORE

AFTER

Construction Data for Tama City, Tokyo

Construction Location

　Tama City, Tokyo

Construction Details

　Temporary Scaffolding Installation
　Roof Replacement Work

Background to the Construction

〇Inquiry Details
This inquiry comes from a customer residing in Tama City.

〇Proposal Details
We proposed a ridge base and roofing sheet that match the durability of Super Galtect, and the customer entrusted us with the construction!

New Materials Used

Existing roofing material: Colonial
New roofing material: Super Galtect, durability of 35 to 40 years (Construction warranty: 10 years, Manufacturer warranty: Coating 15 years, Rust 20 years, Puncture 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

Price Range

　800,000〜900,000

Construction Period

　3 weeks

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 wood that holds the remaining tiles. We will remove the roofing sheet and clean the entire roof.

2. Installing New Sheathing Boards

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

3. Installing Roofing (Waterproof Sheet)

Next, we will install the roofing sheet (waterproof sheet)!
As a secondary waterproofing measure, if the roofing is properly installed, there will be no leaks! We will ensure it is firmly attached to prevent it from blowing away.

4. Fabrication of Accessories (Karakusa and Keraba)

Before the main roofing work, we will fabricate and install accessories such as keraba and karakusa!
The materials used for the accessories are made of SGL steel plate.

5. Main Construction (Aiji Industrial/Super Galtect)

After the accessory fabrication, we will install the Galtect main roofing up to the ridge! After the accessory fabrication, we will install the Galtect main roofing up to the ridge!
Once the roofing is completed up to the ridge, we will install the necessary materials to secure the ridge cap, known as the kanban. We offer 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 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, offers strong fixation, and has excellent wind resistance! Even if rainwater penetrates from the ridge, it has a mechanism to discharge rainwater to the outside, demonstrating high waterproofing performance! It is perfect for the Super Galtect ridge base!

6. 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 firmly 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 installation,
the waterproofing is enhanced by installing a face plate on the inside of the ridge cap!
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 or 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 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 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 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, providing earthquake resistance.
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 Brown

■ Shade Blue

■ Shade Moss Green

■ Shade Charcoal

■New Color Shade Wine Red

You can choose from 6 colors!

This time, the cover work was completed very well in Moss Green!
The customer was very satisfied, and I was also very happy!
Thank you very much!

Please check out other roofing work achievements here!

Roof Material	IG Kogyo/Super Galtect
Manufacturer Warranty	Coating 15 years, Red Rust 20 years, Perforation 25 years
Expected Durability	About 40 years
Color Used This Time	Shade Moss Green

For roof renovations in Tama City, Tokyo, trust Kakeru Koumuten!

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

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 paint film warranty and a 25-year hole warranty from the manufacturer. We also provide a 10-year workmanship warranty, so you can use your roof 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

This was our track record of roof replacement work in Tama City, Tokyo!
We are happy to assist with everything from roof overlay work, roof replacement, to partial roof repairs such as leak repairs.

Estimates and inspections are, of course, free! If you have any issues with your roof, rain gutters, exterior walls, or exterior structures, please consult Kakeru Koumuten Co., Ltd.!

Kakeru Koumuten is a remodeling company strong in exterior renovations, and we carry out complete in-house construction from temporary scaffolding work 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 workmanship 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 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!

If you don't mind, please take a look at this as well!

LINE consultations are also very welcome◎

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For roof, gutter and exterior construction and repairs in Kanagawa,
contact Kakeru Koumuten Co., Ltd.

Kakeru Koumuten is a young company whose team is, on average, in their late twenties, but our skills are second to none.

Our greatest strength is that we handle scaffolding, roofing and painting entirely in-house. In an industry where these tasks are usually divided among contractors, our complete service simplifies project management and helps keep costs down. Above all, if a problem arises, we respond promptly.

We proudly describe ourselves as the youngest and most helpful renovation company in Kanagawa!

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[Tokyo, Tama City] Roof Renovation | We have completed the re-roofing work from Colonial to Super Galtect!

Construction Data for Tama City, Tokyo