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  1. Home
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  3. Civil Engineering Materials
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  5. Joint material
  6. Formable expansion joint material "Krakutite"

Formable expansion joint material "Krakutite"

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last updated:Sep 24, 2025

アーキヤマデ
アーキヤマデ
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Born as Japan's first plastic molding expansion joint material! Molding expansion joint material "Krakutite".

The material used to prevent cracking due to the shrinkage of protective concrete is molded expansion joint material. The "Cracktight" series from Archiyamade was born in 1967 as the first plastic molded expansion joint material in Japan. The main body of the joint uses polyethylene foam, which has excellent recovery power and can sufficiently absorb the movements caused by the expansion and contraction of the protective concrete layer. We take pride in our lineup that accurately meets diverse user needs. For more details, please request our materials.

    Others/Roofing materials (shingles, cement, steel sheets, aluminum)Joint materialWaterproofing work
クラクタイトサムネイル.jpg

Formable expansion joint material "Krakutite"

クラクタイトサムネイル.jpg
クラクタイトサムネイル.jpg スクリーンショット 2023-06-16 14.53.34.png スクリーンショット 2023-06-16 14.53.42.png スクリーンショット 2023-06-16 14.56.27.png
  • Roof-mounted waterproof protective material 'Paraboard'
  • Special site - Product/service details - https://pr.www.ipros.com/a-yamade/product/

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Forming Expansion Joint Material "Krakutite" The cap part of the Krakutite series uses polyethylene with glass fibers, providing excellent dimensional stability. The non-vulcanized butyl rubber adhesive layer on the side of the cap part has excellent adhesion to the concrete substrate, preventing water intrusion and the growth of weeds and other vegetation. With a wide range of products and excellent performance, functionality, aesthetics, and cost-effectiveness, it has gained much trust. For more details, please request the materials.

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We leverage our extensive track record and excellent research and development capabilities to enhance each product's performance and workability, accurately responding to user needs.

catalog(4)

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Krakutaito Parabord Catalog

Krakutaito Parabord Catalog

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Comprehensive Catalog: Archi Yamade Co., Ltd. Rooftop Waterproofing Comprehensive Catalog

Comprehensive Catalog: Archi Yamade Co., Ltd. Rooftop Waterproofing Comprehensive Catalog

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Publication of solar installation examples on flat roofs: "Rivet Roof Case Studies" Eco Roof Edition.

Publication of solar installation examples on flat roofs: "Rivet Roof Case Studies" Eco Roof Edition.

TECHNICAL
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Concrete-based substrate waterproofing renovation catalog

Concrete-based substrate waterproofing renovation catalog

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Company information

アーキヤマデ

アーキヤマデ

Building materials, supplies and fixtures manufacturers

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Akiyamade Co., Ltd. is engaged in the development, manufacturing, and sales of PVC resin-based sheet waterproofing materials. We are well-known for our "mechanical fastening method," which fixes PVC sheet waterproofing to roofs and floors using induction heating devices. In addition to rooftop waterproofing, we also offer "integrated waterproof solar foundations," which allow for the installation of solar panels on flat roofs without concerns about waterproofing. Our products are useful for the increasing demand for renewable energy, particularly in the installation of solar equipment on rooftops.

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The related categories of Others/Roofing materials (shingles, cement, steel sheets, aluminum)

  • Civil Engineering Materials
  • General civil engineering materials
  • Joint material
  • Building Materials
  • Roofing materials
  • Others/Roofing materials (shingles, cement, steel sheets, aluminum)
  • Construction, work and methods
  • Construction Works
  • Waterproofing work
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