Shirokabe Atsumori

They are broadly categorized by application, such as interior, exterior, and roof intermediate coats. In addition, the formulation can be fine-tuned based on finishing methods and desired textures to meet a wide range of needs. In short, the difference lies between a “lightweight material specialized for thick application and repairs” and a “high-strength, traditional sand plaster.”

Shirōkabe Atsumori: [Prioritizes Lightweight & Speed]

This intermediate coat material has a low specific gravity and allows for building substantial thickness in a single application. Because it dries quickly, it is convenient for shortening construction schedules and repairing damaged areas, and can help reduce the load on the building structure.

Shirōkabe Nakanuri: [Focus on Strength & Tradition]

This is an authentic sand plaster made by thoroughly blending sand and hemp shives (such as Manila shives or Nanjing shives) with slaked lime, resulting in a material with solid strength.

Choose the appropriate method based on the condition of the substrate and your intended purpose.

When to Choose “Atumori”

When you want to build up substantial thickness, such as on a wood-scraped (kizuri) substrate

When you want to speed up drying to move smoothly to the next step

When to Choose “Shirokabe Nakanuri”

When you want to apply an authentic intermediate coat to walls in traditional Japanese architecture or cultural properties

When you want a substantial coating thickness along with durability and strength (to prevent cracking caused by susa)

For repairs to roof fascia boards, etc. (*When used with added oil)

While applying multiple coats of “Shirokabe Nakanuri” can increase its thickness,it may sag due to its weight or take a long time to dry. On the other hand,“Atsumori” is designed using lightweight aggregates as a base, so even when the substrate is formed thickly with a single trowel application, it is less likely to sag,and because it dries quickly, construction efficiency is significantly improved.