Points to Consider and Methods for Exterior Painting by Kakeru Koumuten Co., Ltd.!

Hello! This is Kakeru Koumuten Co., Ltd., a specialist in exterior renovations!

Today, we would like to introduce you to Ichijo Komuten, covering the characteristics of their buildings and important points to consider when performing exterior renovations such as exterior wall painting, as well as construction methods.

To get straight to the point, an important factor to consider when contemplating exterior renovations for Ichijo Komuten buildings is “multiple estimates”.
During regular inspections by the house manufacturer, you may be advised on renovations or repairs due to aging.
While it may feel reassuring to request renovations from the house manufacturer that built your home, we recommend obtaining multiple estimates and comparing them rather than deciding on just one company!
We welcome multiple estimates, so if you are considering exterior renovations, please feel free to contact us!

What is Ichijo Komuten?

Ichijo Komuten is a major house manufacturer that emphasizes performance, with the slogan “A house is performance.” Their notable features include high insulation and airtightness and standard installation of floor heating throughout the entire house, which places them among the top in domestic housing performance evaluations.

• Founded: 1978 (Showa 53)
• Headquarters: Koto-ku, Tokyo
• Total number of buildings constructed: Over 250,000 (as of 2024, among the top in Japan for the number of custom-built houses started)
• Brand Series:

・i-smart: A flagship model with excellent insulation and energy-saving performance

・i-cube: Features a simple appearance and cost balance

・GRAND SAISON: A high-end model that balances design and high performance

・Saison Series: A traditional model that utilizes natural materials

Ichijo Komuten is known as a performance-focused housing manufacturer with strengths in “high airtightness, high thermal insulation” and “floor heating throughout the entire house.”

Characteristics of Exteriors Commonly Found in Ichijo Komuten Homes

The notable feature of buildings constructed by Ichijo Komuten is their focus on performance.

Due to their excellent durability and performance, caution is necessary when repainting, so it is recommended to leave it to a contractor with experience in Ichijo Komuten construction!

Main Exterior Materials Used by Ichijo Komuten

Here, we will introduce the main exterior materials used by Ichijo Komuten.
Exterior materials can be broadly categorized into 【Tile Exterior】 and 【Siding】.

【Tile Exterior】

Ichijo Komuten’s tile exterior balances aesthetics and durability. The tiles themselves are hard and resistant to fading, making it attractive that repainting based on coating deterioration is unnecessary. Depending on the model, you can choose hydrotect tiles in addition to standard tiles.

Hydrotect tiles incorporate TOTO’s photocatalytic technology “Hydrotect” into the tiles. With the self-cleaning function that decomposes dirt with sunlight and washes it away with rain, it is a high-performance tile that helps maintain aesthetics for a long time while reducing maintenance effort. (Standard/optional varies by model).

Points

With high durability unique to tiles, it is easy to maintain the appearance for a long time. Light maintenance such as cleaning makes it easy to maintain aesthetics.

Regarding the joints, they deteriorate in 20 to 30 years, so regular maintenance is necessary.

Maintenance

Tile exteriors have a durability of 60 years, so compared to other exteriors, exterior painting is generally unnecessary, and maintenance mainly involves cleaning. However, the joint areas connecting the tiles deteriorate over time due to sunlight, so maintenance of the joints is necessary.

Kakeru Koumuten can also perform exterior wall cleaning (exterior washing) and joint replacement work, so if you have any concerns, please feel free to contact us!

【Siding Exterior】

Ichijo Komuten’s Roofs and Rooftops

Here, we will introduce the main roofing materials adopted by Ichijo Komuten.

Galvalume Steel Sheet (Flat Roof)

A metal roof made of aluminum and zinc alloy. Lightweight, excellent seismic resistance, and resistant to rust.

Available in “Ivory” only.

Parapet Roof (Flat Roof + FRP Waterproofing)

An urban design with rising walls around the perimeter.

FRP waterproofing is standard for rooftop waterproofing. Regular inspections and repainting are necessary.

Slate Roof (Colonial)

Lightweight cement-based roofing material. Relatively inexpensive.

Available in “Colonial Quad (Standard)” and “Colonial Grassa (Optional)”.

Regular maintenance is essential.

Integrated Solar Panels

A method that incorporates solar panels directly into the roofing material.

This design provides a clean appearance and reduces weight.

The basic design is to fully mount on a single-pitched roof.

As this is an original product from Ichijo, retrofitting is not allowed.

Ichijo Komuten’s Joints (Sealing)

Ichijo Komuten has three main types of exterior wall joints.

Sealing Joint (Standard)

Gasket Joint (Partial Construction Method)

High-Durability Sealing (Optionally Adopted)

Points to Consider When Painting the Exterior of a Ichijo Komuten Building

When painting the exterior of a Ichijo Komuten building, there are four main points to consider.

Let’s explain each point in detail!

Check if the Paint is Suitable for Ichijo Komuten’s Exterior Walls

When considering exterior wall painting for Ichijo Komuten, the most important thing is to confirm whether the paint used is suitable for the exterior materials. Ichijo Komuten homes use different exterior materials such as tile walls (Hydrotect tiles) and ceramic siding, depending on the series.Each exterior material has its own characteristics, and some may not be suitable for painting or may require a specific primer.

First, you need to confirm what type of exterior material your home has.

Ichijo Komuten may have special processing applied to the exterior walls. Since the suitable paint can change depending on such underlying conditions, it is essential to understand what the existing exterior is made of.
If you cannot tell by looking, check the blueprints!

Check if the Contractor Has Experience with Ichijo Komuten’s Exterior Wall Painting

Confirm whether the contractor has experience with Ichijo Komuten’s exterior wall painting.

This applies to other house manufacturers as well, but since Ichijo Komuten uses unique exterior materials and sealing materials, it is necessary to know what they are using.

Therefore, it is important to verify whether they have actually worked on Ichijo Komuten buildings.

Do Not Decide Based on Just One Company; Always Obtain Estimates from at Least Three Companies

When performing exterior renovations on Ichijo Komuten buildings, do not decide based on just one company; obtain estimates from several companies for comparison!
When comparing estimates, do not just look at the price; carefully check the details of the estimate, including the process and materials, and confirm whether “the renovation method is suitable for the building? Are appropriate materials being used?”

Check if There is a Solid Warranty and Aftercare Following the Work

In the case of painting house manufacturer homes, how they respond to troubles or defects after construction is also important. What is the warranty period? Can they handle repairs if problems arise? These need to be confirmed in advance.
Also, check whether a warranty certificate is issued and whether regular inspections are conducted.

For Ichijo Komuten Renovations, Choose Kakeru Koumuten Co., Ltd.!

When you want to renovate a house built by Ichijo Komuten, many people may think that only that house manufacturer can perform the work.

In reality, this is not the case, and there are many contractors with extensive experience in construction.
However, because the buildings from Ichijo Komuten often use special exterior materials due to their high durability and quality, caution is necessary during renovations!

Kakeru Koumuten Co., Ltd. has handled numerous exterior renovations for buildings from various house manufacturers.
From temporary scaffolding work to roof work and exterior painting, we perform all work with complete in-house construction, and we are confident that in terms of “cost, quality, and efficiency”, we do not fall behind others!

Because we are confident, we welcome competitive estimates, and of course, it is free!

We also offer robust construction guarantees and aftercare maintenance, so you can request our services with peace of mind.

“I’m glad I asked them!” is what we aim for, and we take your requests seriously. Whether it’s a small concern about your roof, rain gutters, exterior walls, or landscaping, or if you are facing sudden troubles, please feel free to consult with us!

We look forward to your inquiries.

Service Areas

Kakeru Koumuten Co., Ltd. is based in Kanagawa Prefecture and can serve not only within Yokohama and Kawasaki cities but also almost all areas of Kanagawa and Tokyo.
Customers in Saitama, Chiba, and Yamanashi Prefectures who have concerns are also welcome to contact us!

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!