東和工業 List of Products and Services

The "Modified Asphalt Sheet Mechanical Fixing Method" is a waterproofing construction method suitable for waterproof renovation work that mechanically secures a waterproof layer made of highly reliable modified asphalt sheets to the substrate using discs and anchors. Thanks to the characteristics of modified asphalt sheets, a highly reliable waterproof layer is formed. It can be applied to various substrates and even in wet conditions, and it is expected to simplify the substrate preparation process. Additionally, the use of an automatic continuous nailing machine allows for even faster construction. 【Features】 ■ Highly reliable waterproof layer ■ Applicable to various substrates ■ Suitable for renovation work ■ Quick construction ■ Environmentally friendly *For more details, please refer to the PDF materials or feel free to contact us.

• Special Construction Method

The "Kurtal Weed Control Sheet" prevents weed penetration through its multi-layer structure of modified asphalt and polyester fibers. It possesses complete waterproof performance to meet the waterproofing standard "JIS A 6013" for modified asphalt roofing sheets, while also suppressing moisture supply to plants. Similar to waterproof sheets that have a proven track record on rooftops across Japan, it demonstrates excellent weather resistance from warm to cold regions. 【Features】 ■ Light blocking ■ Waterproof ■ Penetration resistance ■ Weather resistance ■ Workability *For more details, please refer to the PDF materials or feel free to contact us.

• Modified asphalt sheet

The "Kurtal Civil Engineering Sheet Pool Waterproofing" is a method that uses modified asphalt cold adhesive technology for landscape ponds and similar applications. The "Kurtal Civil Engineering Sheet (PE-233K Sheet)" is primarily made of modified asphalt with excellent properties, which means it has no flow at high temperatures and is less likely to become brittle at low temperatures, allowing for a wide range of applicable temperatures, making it suitable for cold waterproofing methods. It can be used for applications such as landscape pond waterproofing sheets (artificial pond bottoms and flow areas) and waterproof sheets for biotopes (natural artificial ponds). 【Features of Kurtal Civil Engineering Sheet】 ■ Lap joints are integrated and adhere watertight ■ Excellent substrate followability ■ Wide applicable temperature range ■ Forms a highly reliable waterproof layer *For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method

The "Kurtal MP Sheet" is a waterproof sheet for the joints of concrete structures. By heating the modified asphalt (film surface) on the back of the sheet with a burner and adhering it to a substrate coated with Kurtal Primer A, a waterproof layer with high water tightness and significant penetration resistance is formed. It possesses many characteristics, including essential plasticity, viscoelasticity, and stability as a single-layer functional material. 【Features】 ■ High resistance to external damage such as impact, tearing, and penetration ■ Wide temperature range from low to high temperatures ■ Strong resistance to weather conditions ■ Does not break while following the behavior and displacement of the structure ■ The joint parts between sheets integrate seamlessly *For more details, please refer to the PDF document or feel free to contact us.

• Special Construction Method

The "Ast Mark Method" is a waterproof construction technique that involves bonding polymer-modified asphalt, which cures at room temperature, with reinforcement materials at room temperature. It can ensure water tightness without creating joint sections, even around complex shapes. Additionally, depending on the scale of the project, it can be completed in one day, allowing for labor-saving in the work process. 【Features】 ■ Responds to temperature changes from low to high ■ Maintains stable physical properties ■ Solvent-free, so no special ventilation or protective gear is required ■ Labor-saving in the work process ■ Can be completed in one day depending on the scale of the project *For more details, please refer to the PDF materials or feel free to contact us.

• Special Construction Method

The "Kurtal Sheet SH-80 Anti-Corrosion" is an anti-corrosion sheet developed based on the technology of the self-adhesive special modified asphalt sheet (rubberized asphalt sheet) "Kurtal Sheet." This product, which uses special modified asphalt with excellent physical properties as the main material for anti-corrosion, forms a composite anti-corrosion layer along with Kurtal Primer A on the steel plate and Kurtal Coat on the sheet surface. Compared to methods such as coating anti-corrosion systems, it allows for the application of a much more durable anti-corrosion coating. 【Features】 ■ Uniform film thickness ■ No pinholes ■ Thick anti-corrosion layer ■ Does not crack ■ Can be applied even in the presence of pitting *For more details, please refer to the PDF document or feel free to contact us.

• Modified asphalt sheet

The "Aptorch Method" is a waterproofing technique developed by Towa Kogyo that involves heating and bonding modified asphalt sheets using a torch burner. In the waterproofing industry, various new waterproofing materials and methods have emerged in response to changes in societal conditions. Among these, this method has a proven track record of high reliability associated with asphalt waterproofing, as well as excellent evaluations as an environmentally friendly and labor-saving technique. It is environmentally friendly due to the minimal generation of harmful substances from the melting of asphalt. **Advantages of the Aptorch Method** - One side of the sheet is tapered to a width of 100mm, covering the weaknesses of thick sheet finishes. - The resin film attached to the back of the sheet easily melts under the heat of the torch burner, without hindering adhesion. - The melting state can be visually confirmed. - Complete waterproofing effects, including accessories, can be achieved with carefully prepared auxiliary materials. - It offers excellent cost-effectiveness with common materials for both new construction and renovation, regardless of flat or sloped roofs. *For more details, please refer to the PDF document or feel free to contact us.*

• Waterproofing work

Our company offers the "Kurtal Bridge Deck Waterproofing Method." In 1978, we developed BESS sheets for the torch method aimed at waterproofing bridge decks. Since then, we have enhanced our methods to provide excellent waterproof performance under a variety of site conditions with BESS Sheet N for the flow application method, Kurtal Compound for the heated coating method, and BESS Sheet R for the self-adhering method. 【Features】 ■ Waterproofing against infiltrating water ■ Conformability to movements ■ Durability against shear fatigue ■ Adhesion to the deck and pavement ■ Workability for uniform finishing in a short time *For more details, please refer to the PDF document or feel free to contact us.

• Waterproofing work

The "Kurtal Architectural Sheet" is a modified asphalt sheet that provides advanced water-tight waterproofing through a cold adhesive method. It features a three-layer structure, primarily composed of modified asphalt with excellent viscoelasticity, extensibility, and thermal stability, along with dimensionally stable polyester spunbond (with glass mesh), which is impregnated and coated, and has an adhesive layer on the back. As a result, each layer has the ability to absorb external damage and changes in the structure, ultimately demonstrating effects similar to those of laminated construction. 【Features】 ■ Provides advanced water-tight waterproofing through a cold adhesive method ■ Ensures waterproof functionality through a rational structure ■ Easy to install and labor-saving ■ Environmentally friendly with energy and resource conservation ■ Prefabricated materials with stable materials and shapes *For more details, please refer to the PDF document or feel free to contact us.

• Waterproof sheet

"Builder Seal" is a groundbreaking sealing material with excellent properties, primarily composed of hydroxyl-terminated polybutadiene, and is a two-component reaction-type elastomer (rubber elastomer). It completely seals gaps at joints, preventing the intrusion of water and gases from the joint seams. It is suitable for waterproof sealing materials for joints in civil engineering and architectural structures, joint materials for protective concrete, protective coatings for concrete, and anti-corrosion materials. 【Features】 ■ Water tightness and air tightness ■ Resilience and recovery ■ Weather resistance ■ Aging resistance ■ Flame resistance *For more details, please refer to the PDF materials or feel free to contact us.

• Joint material

The "Kurtal Civil Engineering Sheet" is a waterproof sheet that has been practically developed as a civil engineering waterproofing material using a modified asphalt cold adhesive method. The important lap joints in civil engineering waterproofing are prevented from adhesive failure due to the excellent properties of the Kurtal sheet, such as viscoelasticity, self-healing, and a three-layer structure centered around a core material, which allows for viscous deformation and ensures integrated watertight adhesion. It has been adopted in many waterproofing projects, including the Tokyo Metropolitan Subway, Yokohama Subway, and Haneda Airport, and has been widely used as a "trusted material" for over 40 years. 【Features】 ■ Lap joints integrate to form watertight adhesion ■ Excellent substrate followability ■ Wide applicable temperature range ■ Forms a highly reliable waterproof layer *For more details, please download the PDF or feel free to contact us.

• Waterproof sheet
• Civil Engineering Sheet