homeNewsCaring for the Environment with our Eco and Sustainable Building Materials and Paint Coatings

April 5, 2022

Metal Craft News

Caring for the Environment with our Eco and Sustainable Building Materials and Paint Coatings

As the world faces increasingly serious environmental challenges, including global warming and air pollution, it’s clear that many clients are making choices about building materials based on how those materials can help to reduce their environmental footprint. Here, we introduce some of KIKUKAWA’s leading eco and sustainable metal building materials and paints.

■Sun-shielding louvres

Louvres installed on the top rise section of Faculty of Engineering Building 3 on the Hongo Campus of the University of Tokyo. The louvres are steel coated in zinc phosphate.

Rather than internally fitted blinds and curtains, louvres installed on the exterior of a building are more effective in shielding sunlight. By shading the building from direct sunlight, they prevent the interior building temperature from rising too high, thereby reducing the need for air conditioning and contributing to CO2 reduction and a lower energy footprint.

Project Gallery: The Faculty of Engineering of the University of Tokyo

■Expanded metal

Top: Expanded metal installed on the exterior wall of the Kikukawa Techno Plaza.
Bottom: The view from inside. A suitable level of natural light is able to filter through the expanded metal.

Expanded metal is formed by stretching out cuts made in metal sheets, meaning there is none of the loss or scrap that arises with punching. The area of the processed material is also greater than that of the original material, which has led in recent years to considerable interest in expanded metal as an eco-friendly material.

KIKUKAWA’s technologies – Expand Metal Louvers

■Powder coatings

Powder coating is a process in which static electricity is used to spray finely ground pigment onto the target surface. The powder is then heat-cured to form a coating. This technique helps to reduce the burden on both the environment and workers in the following ways:

Mitigates air pollution: does not contain organic solvents, in the form of volatile organic compounds (VOC), which are the cause of photochemical smog

● Reduces loss: has a high adhesion rate in comparison to organic solvents

Protects the health of workers applying the coating: contains no VOCs, which are the cause of sick building syndrome.

Samples of powder coatings, used on the Arts Maebashi building, displayed in KIKUKAWA’s showroom STUDIO K+. We also have a range of other powder coatings, including those with stone-like and wood grain-like effects.

Project Gallery: Arts Maebashi

We recommend powder coatings to finish both punched and expanded metal louvres. With standard paint coatings, it can be difficult for the paint to reach all of the holes in punched panels, or cuts in expanded metal. Powder coating, however, ensures that the paint adheres consistently across all parts, leaving a thick and even coating. In addition, our high weather resistance polyester powder coating is considered equivalent in performance to our fluororesin coating, and is regularly used to finish exterior materials.

Project Gallery: Search by Finishes: Powder Paint Coating

A courtyard featuring expanded metal finished in a powder coating. The functionality of the material allows both air and light to filter through.


During machining, to minimise material loss, we use machining programs to cut out all parts from metal sheets. During manufacturing, we recycle everything we use, from small scrap (metal shavings) to metal building materials which are being removed from a site as they are no longer required.
We have also taken part in a project to upcycle aluminium materials as decoration for commercial spaces. Through this project, aluminium retrieved from 700 series Tokaido Shinkansen cars was reborn as eaves designed to resembled noren (traditional fabric curtains), and installed in Tokyo Gift Palette, a shopping mall inside Tokyo Station. See the link below for more details.

News: Release: Bullet Train Upcycled as Interior Decorations for a Mall, Tokyo Gift Palette

We are also developing a range of other eco building products, including solar LED street lights and solar power generation equipment. Please get in touch if you are interested in choosing eco and sustainable building materials.

Click here for our online inquiry form