The beginning of Western architecture in Japan 1

By MIHASI on 01/28/2020 0 Comments • Tags: #westernarchitecture

Japan was in the national isolation policy, except the Netherlands, for more than 200 years from 1639. Meanwhile, in the United States and Europe, the industrial revolution that began around the middle of the 18th century has seen remarkable developments in commerce and industry. As a result, great powers such as the United Kingdom, France and the United States sought colonies in the East to develop new markets.

The influence also spread to Japan and the US forced Japan to open. Finally, in 1854, the US-Japan Peace Treaty required by the US was concluded and the country was opened.


More than a thousand years ago, Japanese architecture was Buddhistic style, influenced by architectural styles and techniques that came from China with Buddhism. Then, Japanese wooden architecture has matured and Japanese wooden architecture evolved by reflecting Chinese style again around 1500, and localization and diversification advanced.

In the 1600s, a castle town was formed and the townscape was formed. In the mid-1800s mortar wall buildings and plaster wall buildings were spread in response to frequent fires.


After opening the country in 1854, the government started the construction of a Western factory. Architectural experts came to Japan to guide construction.

Steel mills and silk mills were built, and brick manufacturing methods spread throughout the country. In the foreign settlements where the port opened, exotic buildings such as houses, trading houses and churches attracted the attention of people. (To be continued)


Outline of Japanese Criteria of Fireproof-material

By MIHASI on 11/18/2019 0 Comments • Tags: #sunmentocera

Like MIHASI’s Sunmento Cera has been certified by the Ministry of Land, Infrastructure and Transport Japan as a non-combustible product since 2009, Fireproof-materials are widely used in building materials.
In order to be officially certified as Fireproof-material in Japan, the material must meet 3 conditions as below.


Basic 3 conditions of Fireproof


The material must not burn with a flame.
For fire prevention, the material must not cause harmful damage (deformation, welding, cracking, etc.) .
For safe evacuation, the material must not generate harmful smoke or gas

Material meeting these three conditions is classified as “non-combustible material”, “quasi-incombustible material” or “flame retardant material” according to the length of heating time until it does not meet that condition.




Non-combustible material


Ceramic tile
Fiber reinforced cement panel
Glass fiber reinforced cement board with a thickness of 3mm or more
Fiber reinforced calcium silicate based ceramic board with a thickness of 5mm or more
Metal plate
Gypsum board with a thickness of 12mm or more
(Limited to board paper with a thickness of 0.6mm or less)
Rock wool board
Glass wool board


Quasi-incombustible material


1.Non-combustible materials that meet the Basic 3 conditions of Fireproof for 20 minutes after the start of heating when fire heat is applied by a normal fire
2. Gypsum board with a thickness of 9mm or more
(Limited to board paper with a thickness of 0.6mm or less)
3. Wood wool cement board with a thickness of 15mm or more
4.Hard cement wood chip board with a thickness of 9mm or more
(Limited to bulk specific gravity of 0.9 or more)
5. Cement wood chip board with a thickness of 30mm or more
(Limited to bulk specific gravity of 0.5 or more)
6. Pulp cement board with a thickness of 6mm or more


Flame retardant material


1.Non-combustible materials that meet the Basic 3 conditions of Fireproof for 10 minutes after the start of heating when fire heat is applied by a normal fire
2. Flame retardant plywood with a thickness of 5.5mm or more
3. Gypsum board with a thickness of 7mm or more
(Limited to board paper with a thickness of 0.5mm or less)

Since this blog briefly explains the outline of the Japanese Building Standard Act in a simplified manner without its full details, we shall not be liable for any damage caused by this blog.
For the full information, please inquire the Ministry of Land, Infrastructure and Transport Japan by visiting the following link.


SUNMENTO story 4

By MIHASI on 10/18/2019 0 Comments • Tags: #molding #sunmento

This time, we introduce some of the designs of Sunmento.

Major designs


Greek meander






Flower crown


Leaf swag


Palm tree and leaf








Egg and darts


Floral pattern






Sausage and beads


Scallop shell


As there are various shapes in molding, various designs also have been created along with the changing times, based on designs used in Western classical architecture.


SUNMENTO story 3

By MIHASI on 10/03/2019 0 Comments • Tags: #molding #sunment

This time, we will introduce some of the shapes of Sunment.

Major shapes



Typically with a convex or concave zone engraved in the center line.



A concave or canted interior corner molding.



A double curve with the shape of an elongated S.


Cyma recta

A molding of double curvature that is concave at the outer edge and convex at the inner edge.


Cyma reversa

A molding of double curvature that is convex at the outer edge and concave at the inner edge.



A convex molding, the profile of which is one-quarter of a circle also called a quad molding.



A common convex molding consisting of a quarter circle in section.



A bead or torus molding carved in imitation of a rope.



Convex semicircle on flat part.



Semicircle cross section.


Reed molding

A small convex molding, several ridges are carved close together.

Based on these shapes, a single molding is completed by designing the surface.
Next time we will introduce the molding design.


SUNMENTO story 2

By MIHASI on 08/19/2019 0 Comments • Tags: #molding #sunmento

MIHASI’s original brand, SUNMENTO is synonymous with the molding field.
SUNMENTO now has a variety of over 400 types. There are a variety of surface shapes ranging from classic and elegant designs that are Western classical architectural styles to modern designs that make use of simple straight lines. This product configuration can be used for various applications such as crown molding, waist-high-molding and basemolding. In addition, rounded materials with the same shape are also available, and a variety of space can be produced by combining straight lines and curves.
This time, we will introduce the wood used as the base material.

AY: Ayous material

Light yellowish white or cream color with little difference in color between core and sapwood.
Since the wood is light and soft, it is easy to cut and is used for molding, furniture cores, drawers, and joinery.

Finger joint processing is performed to make effective use of materials.
We process materials such as scrapes and stains and putty processing.
For finishing and painting, we recommend dark coloring and painting.

WCO: White Cherry Oak

The color is bright yellowish white and there is little color difference between the core and sapwood.
The material is highly elastic and easily processable. It has hardness, weight, and strength, and has the ability to hold nails and wood screws.
It is used for molding, furniture, etc. where people and things such as frame materials and baseboards come into contact.

Finger joint processing is performed to make effective use of materials.
The paint finish can be selected from transparent coating, coloring and painting.

In addition, Sunment is used for the exterior and interior in various materials such as ceramic materials, rigid polystyrene, glass fiber reinforced gypsum, PVC, etc.
Next time, we will introduce the design with actual examples.

To be continued



SUNMENTO story 1

By MIHASI on 07/11/2019 0 Comments • Tags: #molding #sunmento

Mihashi Co., Ltd. has reached its 47th year of business. Over time as work to handle molding products has increased, so have product orders of molding products, and our molding department has grown larger. In this way, we have grown into the largest company in the industry dealing with decorative materials for buildings such as hotels and wedding halls. We are also the first to use the word “gorgeous decoration material” in the sense of decorating the building in a gorgeous way.

Therefore, based on the idea that clients will be delighted if we could stably supply ready-made products of gorgeous decoration materials, development, manufacture and supplying of the original brand “SUNMENTO” (crown molding) started.

Clients’ reactions from the beginning of the sale are very good, and further improvements are made to standardization of product quality, unify, and automate production of SUNMENTO, which was conventionally manual processing, to supply products in high quality, at low price and in short delivery time.

Since then, we have created beautiful and rich architectural spaces through products and services, and “SUNMENTO” has grown to become synonymous with the molding field.

The lineup of “SUNMENTO” products and their functions will be introduced next time.

To be continued


Information of exhibition in Kuala Lumpur to seek sales representatives and distributors

By MIHASI on 06/06/2019 0 Comments • Tags: #archidex #exhibition #malaysia

We will exhibit our products at South East Asia’s most successful annual industry trade event for the architecture, interior design and building fraternity – ARCHIDEX will be held from 3rd – 6th July this year at Kuala Lumpur Convention Centre Malaysia.
For more information, visit

Don’t miss out on the opportunity to be the designated MIHASI sales representative or distributor in your area by visiting our booth NO.6B021 in HALL6.


We are seeking sales representatives and distributors who are

  • Established and experienced at sales in this industry
  • Knowledgeable about architecture and interior design
  • Committed to offering their customers the best products available

For more information, visit our booth or website.