Tokyo | Setagaya-ku | K’s Residence: We carried out a roof renovation and leak prevention using Ridgeway!

Hello!
I am Yamanaka from Kakeru Koumuten Co., Ltd., a specialist in roofing, exterior painting, and exterior renovations located in Aoba-ku, Yokohama!
This is a case study of a roof renovation project in Setagaya-ku, Tokyo.

The work involved roof overlay and roof replacement (Ridgeway)!
We implemented leak prevention measures through the roofing work!

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

Roof Overlay Construction Procedure

Roof Replacement Construction Procedure

1. Existing Roof Demolition

We will dismantle the existing roof.

2. New Sheathing Installation

After dismantling the roof, we will process and install new sheathing according to the dimensions.

3. Roofing Installation (Waterproof Sheet)

The roofing material used this time is the Tadi Self from Tajima Roofing, which is an adhesive roofing.
It is used for roofs with a gentle slope!
Its durability is about 20 years, similar to modified asphalt.

4. Fabrication of Accessories (Karasumi and Keraba)

We will process and install the karasumi and keraba.

5. Main Construction

Once the main roofing is completed, we will install a ridge board. This time, we used a cedar ridge board, but there are also ridge boards made of corrosion-resistant resin.

6. Processing of Ridge Flashing

We will process and install the ridge flashing.

7. Cleaning

We will remove the debris that has fallen around the house and inside the rain gutters, and do a thorough cleaning.
We strive to ensure that the area looks cleaner after the work than it did before!

This completes the construction!

The roofing material used is the Ridgeway from Asahi Fiberglass.
Ridgeway comes with a 10-year manufacturer warranty.
Since it uses natural stone that is baked and painted on the surface, it is a roofing material that does not require painting, thus reducing maintenance costs!
Additionally, because it uses fine natural stones on the surface, you won’t be troubled by rain noise.
Moreover, it is a lightweight roofing material, making it strong against earthquakes and providing seismic resistance.

Colors

■ Dual Black

■ Harvard Slate

■ Vintage Green

■Dual Brown

This time, we achieved an excellent finish with a vintage green roof construction!
The customer was very satisfied, and I was also very happy!
Thank you very much!

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 layered, it is also referred to as “layered roofing.”

Advantages of the Overlay Method

Since a “new roof” is placed over the “current roof,” there is almost no need for demolition work, meaning that very little waste is generated.
This is the biggest feature and leads to various advantages.

The only parts that require demolition and waste disposal are the ridge caps, making it more cost-effective compared to complete roof replacements.
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).
Some building materials used in structures constructed before 2004 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, the construction can be completed in a shorter time frame compared to painting or complete roof replacements. A shorter construction period means lower labor costs, which in turn makes the overall cost more affordable.
The psychological anxiety of having to live in an unusual environment is also reduced.
When scaffolding is erected, there may be inconveniences such as difficulty entering and exiting or opening windows. Being able to return to normal life in a short period is a significant advantage.

Our company specializes in roof construction, and the roof overlay method is the most frequently performed type of work we undertake. We are very grateful that we are continuously engaged in roof overlay projects without interruption.

For Roof Renovations in Tokyo, Trust Kakeru Koumuten!

Our base is in Aoba-ku, Yokohama, but we also have extensive experience in roof renovations in Tokyo.
We are happy to assist with roof overlay projects, roof replacements, leak repairs, and even partial roof repairs.
If you have questions like “I just want to know the estimate for a roof renovation” or “I want to know about roofing materials,” please feel free to contact us!

Long-Term Reliability

All roofing materials we use come from highly reliable products that offer long-term warranties. For example, the Ridgeway from Asahi Fiberglass used this time comes with a 10-year manufacturer warranty, allowing you to use it with peace of mind for an extended period after just one renovation.
Ridgeway 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.

Conclusion

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

Kakeru Koumuten is a remodeling company strong in exterior renovations, and we carry out everything from temporary scaffolding 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 offer robust construction guarantees and aftercare maintenance, and we have received positive feedback for our appropriate proposals that align with cost performance and our customers’ future life plans!

We take every request seriously so that you can think, “I’m glad I asked them!”.

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!

LINE consultations are also very welcome◎

 

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!