マスト List of Products and Services

"Big Sun" is a polymer-cement-based waterproofing material that forms a strong, durable, permeable waterproof coating or an elastic coating. It has excellent performance, combining flexibility and strength, and can also be used for drinking water applications. Additionally, unlike other waterproofing materials, it does not require special techniques or machinery, allowing for safe construction to be completed in a short period. 【Features】 ■ Easy, safe, and quick application ■ Forms a flexible and elastic waterproof layer ■ Excellent followability ■ Can also be used for internal waterproofing of water purification facilities, distribution reservoirs, and water storage tanks *For more details, please refer to the PDF document or feel free to contact us.

• Waterproofing work
• Coating film waterproofing material/permeable waterproofing material
• others

The "Toyo Chemiluf" is a construction waterproofing system that utilizes the excellent properties of FRP (fiber-reinforced plastics) to meet diverse needs that are becoming increasingly complex and advanced. Due to its low viscosity, it can be easily applied with a roller or brush. Compared to other waterproofing materials, it has high hardness and excels in impact resistance and abrasion resistance even in exposed waterproofing. Furthermore, compared to conventional urethane coating methods, it has a shorter effective time, allowing for continuous construction processes, which leads to reduced construction periods. 【Features】 ■ Easy application and shortened construction time ■ Substrate adaptability ■ High reliability ■ Lightweight (weight per unit area is 3-5 kg) ■ Toughness and durability *For more details, please refer to the PDF materials or feel free to contact us.

• Waterproofing work
• others

The "Kurtal Construction Sheet" is a self-adhesive sheet that enables advanced water-tight waterproofing through a pressurized method at room temperature. 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 a self-adhesive layer on the back. Each layer is equipped with the ability to absorb external damage and structural changes, effectively demonstrating similar benefits to laminated construction methods. 【Features】 ■ Advanced water-tight waterproofing enabled by pressurized method ■ Strong resistance to substrate cracks due to three-layer structure ■ Easy to install, allowing for shortened construction time and labor savings ■ No smoke or unpleasant odors, contributing to carbon dioxide reduction ■ Prefabricated materials with stable material and shape *For more details, please refer to the PDF document or feel free to contact us.

• Waterproof sheet
• Waterproofing work

"Elehon #100" is a waterproofing material that contains inorganic penetrating components. The waterproofing properties are enhanced by the film-forming of EVA-type emulsion and the capillary blockage effect provided by the inorganic penetrating components. It allows for easy, quick, and hassle-free waterproofing of civil engineering structures. 【Features】 ■ Contains inorganic penetrating components ■ Excellent convenience ■ High waterproof performance ■ More economical compared to conventional waterproof coatings *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material

"EFGOOD" is a waterproof vertical protection construction method using T-panel Lambda. By adopting a porous hollow structure parallel to the board material, it achieves lightness and strength, while the air layer provides excellent effects in insulation, condensation prevention, and soundproofing. Additionally, since it is composed of inorganic materials, there is no deterioration from ultraviolet rays and salt damage in coastal areas, or from sulfur dioxide and nitrogen oxides in urban and industrial areas. 【Features】 ■ Lightweight and high strength ■ Excellent effects in insulation, condensation prevention, and soundproofing ■ No deterioration from ultraviolet rays, salt damage, or nitrogen oxides ■ Uses products certified by the Public Building Association *For more details, please refer to the PDF materials or feel free to contact us.

• Waterproof tape, adhesive, drain, protective panel
• Waterproofing work
• others

The "PF System" is a dry floating floor finishing method consisting of functional support legs PF stands and a variety of finishing materials. It can be installed not only on raised floors such as rooftops, roof balconies, and entrances but also on complex substrates with height differences. Partial removal is also possible, making maintenance of the waterproof layer and drainage pipes beneath the finishing materials easy. 【Features】 ■ A wide variety of options available to suit different applications and aesthetics ■ Excellent workability and durability ■ Reduced burden on buildings and the environment ■ Easy maintenance management *For more details, please refer to the PDF materials or feel free to contact us.

• panel
• others
• Other flooring materials

"Hydroproof" is a permeable water-repellent material that prevents efflorescence caused by the movement of water and prevents explosive rusting. In particular, the components that react within the concrete exhibit water-stopping effects by repeatedly reacting due to water infiltration from newly formed cracks. Furthermore, by combining it with diverse media coatings and existing general materials, the range of applications, protective functions, and product compatibility are expanded, attracting attention from overseas. [Features] ■ Deep penetration with less than half the surface tension of water ■ Prevention and suppression of efflorescence ■ Prevention of carbonation ■ Water repellency, waterproofing, and surface protection ■ Significantly improves the durability and stability of structures *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Waterproofing work

"CERINOL DS" is a waterproofing material for concrete structures developed in 1930 by Daiterman, a comprehensive waterproofing material manufacturer in Germany (now part of Saint-Gobain Weber). In 1992, the standardization of construction methods was established under JASS8, and since then, numerous construction achievements have been accumulated both domestically and internationally. It is widely used in underground concrete structures, various pits, water tanks, water and sewage treatment facilities, agricultural and fishery collection and discharge facilities, waste treatment facilities, swimming pools, dams, tunnels, and more. 【Features】 ■ Environmentally friendly materials for both the global and working environment ■ Can be applied to damp substrates ■ Excellent workability helps shorten construction periods ■ Extends the lifespan of concrete structures ■ Demonstrates waterproofing effectiveness when applied on both the water pressure side and the back pressure side *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Waterproofing work

The "Roofing Guide (Construction Use)" is a catalog featuring reliable asphalt waterproofing materials with a proven track record. It includes "asphalt roofing," which consists of a felt-like base paper impregnated and coated with asphalt, with mineral powder adhered to both sides, as well as products like "Custom BS15" and the emulsion-based primer "Primer AQ," which is based on modified asphalt. [Contents] ■ Asphalt roofing materials ■ Modified asphalt roofing materials ■ Modified asphalt roofing materials (torch and adhesive methods) ■ Asphalt primers for waterproofing work ■ Finishing paints *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods

"Rim Spray" is a super-fast curing polyurethane spraying system that quickly develops curing speed and material properties. After spraying, it becomes touchable in about 10 seconds, walkable in about 15 minutes, and the required material properties are achieved in approximately 30 minutes. Since practical strength can be obtained in a short time after application, it allows for layering of coatings and the execution of subsequent processes, significantly shortening construction time. Additionally, it can be continuously applied to any complex shapes such as slopes, vertical surfaces, and spherical surfaces, ensuring a seamless and uniform thickness of the polyurethane coating. 【Features】 ■ Quickly forms a coating with sufficient strength ■ Significantly reduces working time ■ Can be applied freely even on complex shapes ■ Major labor savings and dramatic improvement in construction efficiency ■ Consistently ensures stable quality *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods

"Ribbet Roof" is a waterproof sheet made primarily from PVC resin with a special formulation that minimizes changes in physical properties due to temperature fluctuations and ultraviolet rays, offering excellent durability. The overlapping joints are fused together using hot air or adhesive, resulting in outstanding joint strength. Consideration is given to the joint width and fusion method to ensure high water tightness. 【Features】 ■ Hybrid waterproof sheet ■ Aesthetic color sheet ■ High water tightness ■ High quality proven through various tests ■ Product design with excellent durability based on various exposure evaluations *For more details, please refer to the PDF document or feel free to contact us.

• Waterproof sheet
• Waterproof tape, adhesive, drain, protective panel

"Unite Clean LR" is a modified asphalt sheet based on a reliable and proven quality that has been improved by adding resin and rubber as auxiliary materials to natural asphalt, enhancing its weather resistance and durability. It employs a cold and heat composite type environmentally friendly modified asphalt waterproofing method using "Unite Compound." Additionally, it utilizes high-strength polyester long fiber non-woven fabric as the core material, and high-quality modified asphalt made from asphalt, specially treated synthetic rubber, and special organic fillers, shaped into a waterproof sheet called "Unite Sheet" of the specified thickness. [Features] ■ Unite Compound is an environmentally friendly low smoke and low odor type ■ Composite with multifunctional sheets prevents blistering ■ Allows for a thin-layer specification, reducing construction time ■ Excellent weather resistance and temperature sensitivity, durable and long-lasting ■ Superior self-repairing properties and resistance to substrate cracking *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods

The "Unite MF Waterproofing Method" is a construction method that securely fixes modified asphalt to the structure using dedicated anchors. You can choose the optimal specification from various waterproofing variations, including lightweight and reliable standard specifications, multi-layer specifications with enhanced durability, renovation specifications set with substrate treatment, and lightweight walking specifications achieved through combinations with step boards. Additionally, it features a modified asphalt-based ultra-thick sheet (3.5 to 4.0 mm) with a core material made of high-strength synthetic fiber non-woven fabric, which excels in weather resistance, durability, and water resistance. 【Features】 ■ Highly reliable waterproof layer ■ Can be installed on wet substrates ■ No blisters occur ■ Suitable for renovation work ■ Rapid construction through mechanization ■ Environmentally friendly *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods

The "Melton 21 Waterproofing Method" is a torch application using modified asphalt roofing developed based on highly reliable modified asphalt. Compared to conventional asphalt waterproofing thermal methods, it requires fewer materials and tools for installation, and significantly reduces smoke and odors, providing a major advantage for waterproofing work in urban areas. Additionally, since the overlapping parts of the roofing are thermally fused with a torch burner, a highly watertight integrated waterproof layer can be created. 【Features】 ■ Highly watertight waterproof layer ■ Excellent abrasion resistance ■ Excellent tear resistance ■ Excellent durability ■ Reduced environmental impact *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods

"Mecha Fine" is an environmentally friendly PVC sheet waterproofing method. By adopting a heat-insulating waterproof specification (compliant with the Green Purchasing Law), it suppresses the rise in roof surface temperature. During renovations, it reduces waste generated from the removal of existing waterproof layers, leading to shorter construction periods and cost savings. Additionally, it is less susceptible to physical property changes caused by pollutants in industrial areas, is resistant to salt damage in coastal regions, and has minimal damage from bird pecking. 【Features】 ■ Environmentally friendly waterproof specification achieved by using F☆☆☆☆ compliant adhesives ■ Reduces waste generated during renovations through mechanical fastening methods ■ A system that can also be used when adopting solar power generation systems ■ Saves heating and cooling costs through the adoption of insulation methods and heat-insulating specifications ■ Strong against salt damage in coastal areas *For more details, please refer to the PDF materials or feel free to contact us.

• Waterproof sheet
• Waterproof tape, adhesive, drain, protective panel
• Renovation and repair methods

"Maruesu Single" is an extremely flexible roofing material (asphalt shingle). It can be installed on various roof shapes, such as dome-shaped and gable-shaped roofs. Both sides of the product are coated with asphalt, providing high waterproofing, which is the most important function required for roofing. The surface is finished with colored sintered slate sand that has a high affinity with nature, making it suitable for creating landscapes that consider the environment and harmonizing with the surrounding environment. 【Features】 ■ Flexible material that accommodates complex shapes ■ Excellent primary waterproofing function as roofing material ■ Lightweight roofing improves earthquake resistance and safety ■ Roofing material with excellent dimensional stability and temperature sensitivity ■ Certified for fire resistance by the Ministry of Land, Infrastructure, Transport and Tourism *For more details, please refer to the PDF document or feel free to contact us.

• Others/Roofing materials (shingles, cement, steel sheets, aluminum)
• Roof and gutter construction
• Renovation and repair methods

The "Presto System" is a construction method that integrates cold asphalt "Presto Coat" with modified asphalt roofing and other materials in a layered manner. It creates a robust waterproof layer that excels in water tightness and durability. Since there is no smoke, odor, or carbon dioxide emissions during construction, the environmental impact is reduced. The materials used do not contain specific chemical substances, ensuring high safety for workers and preventing contamination of the surrounding construction site. 【Features】 ■ Cold asphalt "Presto Coat" ■ Reduced environmental impact ■ Highly reliable layered construction method ■ Excellent workability ■ Wide versatility *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods

The "Toyo Sofrancil" is a catalog featuring a two-component polyurethane coating waterproofing system. It offers excellent water tightness and outstanding durability for waterproofing methods on urban building rooftops and open corridors. The lineup includes the F☆☆☆☆ compliant polyurethane coating waterproofing material "Sofrancil 141," as well as "Sofrancil 152" and "Sofrancil 163." [Contents (excerpt)] ■ Sofrancil protective finishing materials ■ Environmental considerations of Sofrancil ■ Composite ventilation buffering method ■ Sofrancil SSA sheet installation guidelines ■ Introduction to Sofrancil products *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods

"Toyoshit Extra" is a waterproof construction method that combines a vulcanized rubber sheet primarily made of durable EPDM and a tape-like sealing material primarily made of butyl rubber (IIR), which has excellent airtightness. Waterproof sheets formed into a consistent sheet size in the factory are adhered to the substrate using adhesive. This creates a waterproof layer with uniform thickness and material, ensuring high reliability and allowing for the addition of various functions. 【Features】 ■ Environmentally friendly ■ Excellent durability ■ Colorful sheets available ■ Lightweight and flexible ■ Can be finished with SD floor coating for light foot traffic *For more details, please refer to the PDF document or feel free to contact us.

• Waterproof sheet
• Waterproof tape, adhesive, drain, protective panel

"Sofuranshiru Eco" is a one-component polyurethane coating waterproofing material. It can be applied directly without the use of a mixing machine. Since no carbon dioxide is generated from the reaction with moisture, it forms a uniform coating without foaming. Additionally, it contributes to reducing work hours and minimizing waste, as well as lowering environmental impact through recycling and other means. 【Features】 ■ No need for mixing ■ Can be applied in thick layers ■ Easy-to-handle material design ■ No concerns about curing failure ■ Reduces work hours ■ Environmentally friendly material ■ Improved application in winter *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material

"Sofuranshiru ECO" is a waterproof urethane coating material that complies with regulations on specific chemical substances. It is a low-odor type that does not use aromatic solvents. This contributes to environmental conservation regarding odors and creates a comfortable construction (application) environment and living environment. Additionally, it does not use organic solvents regulated by the Organic Solvent Poisoning Prevention Regulations and does not fall under the substances covered by the Specific Chemical Substance Hazard Prevention Regulations. 【Features】 ■ Low-odor type that does not use aromatic solvents ■ Creates a comfortable construction (application) environment and living environment ■ Does not use organic solvents regulated by the Organic Solvent Poisoning Prevention Regulations ■ Does not fall under the substances covered by the Specific Chemical Substance Hazard Prevention Regulations ■ Does not use materials suspected of having endocrine-disrupting effects *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material

"Sepiron" is a clean, safe, and highly workable urethane coating waterproofing method. With environmental considerations in mind, it boasts rapid curing properties that allow it to harden by the next day even in winter with the "Sepiron Q Method," and for greater environmental compatibility, it uses a solvent-free urethane in the "Sepiron E Method." Additionally, we offer a composite insulation waterproofing method, "Sepiron M Method," which combines urethane waterproofing materials with modified asphalt sheets. This method provides significant advantages not only for new construction projects such as office buildings, schools, and condominiums but also for renovation work. 【Features】 ■ Excellent safety ■ Superior workability (rapid curing) and shortened construction period ■ Reliable waterproof performance ■ Walkable ■ Quality that meets JIS standards *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material

"Sky Resin Aqua Epoxy" is a corrosion protection system for concrete used in water supply facilities. All materials possess water-dispersible properties, have excellent wet adhesion, and allow for safe application. By using hydrophilic polyamines that do not contain surfactants, it offers improved water resistance and chemical resistance compared to conventional forced-emulsion epoxies. 【Features】 ■ Complies with JWWA K143 (2004) quality standards ■ Improved water resistance and chemical resistance compared to forced-emulsion epoxies ■ After curing, it provides a beautiful, glossy coating ■ Excellent coating properties and chemical resistance ensure long-term corrosion protection for concrete ■ Superior adhesion to substrate preparation materials eliminates concerns about blistering or leaching of alkaline components *For more details, please refer to the PDF document or feel free to contact us.

• Renovation and repair methods
• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material

"Kanaat" is a greening method developed considering the rainy climate of Japan. Taking into account low cost and low maintenance, it features a panel-type greening system (low management type) called "Kanaat Green Biz G," which uses sedum, a resilient plant among grasses and flowers, as the standard for planting. Additionally, there is a managed greening method called "Kanaat Greening Foundation" that can accommodate various plantings such as medium-sized trees, shrubs, grass, and flowers, allowing for the selection of a system tailored to the various performance requirements needed for rooftop greening. It enables easy construction and creates rooftop greening within a short construction period. 【Features】 ■ Lightweight system that reduces the load on buildings ■ Significantly shortened construction period ■ Excellent root resistance ■ Designs the landscape ■ Innovative air conditioning PF system *For more details, please refer to the PDF materials or feel free to contact us.

• Renovation and repair methods
• Wall and rooftop greenery

The "Custom EE Method" is a construction method that adheres the base layer with an adhesive layer and uses a torch burner to weld the roofing material at joint areas, creating a unified structure. Compared to asphalt waterproofing thermal methods, this method involves less high-temperature work on-site, and it primarily uses water-based primers, resulting in minimal impact from solvents on workers. Additionally, it has specifications that require little to no use of open flames and can accommodate various base materials, making it very suitable for renovation work. 【Features】 ■ Less high-temperature work on-site ■ Generates less carbon dioxide, which contributes to global warming, making it environmentally friendly ■ The use of the torch burner is limited to joint areas, resulting in minimal impact from odors, smoke, and noise on the surrounding environment during construction ■ Significantly improves construction efficiency compared to conventional methods ■ Creates a highly reliable waterproof layer by using a torch burner for melting and integration *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material
• Renovation and repair methods

"HC Eco Proof EN" is a fast-curing, environmentally friendly urethane waterproofing material that does not contain specific chemical substances or lead, ensuring excellent safety. It utilizes the characteristics of highly elastic polyurethane, with an elongation rate exceeding 700%. This superior elasticity allows it to adequately follow cracks in the substrate, guaranteeing reliable waterproof performance. Additionally, it is applied by mixing two components, forming a seamless coating even in complex areas. [Features] - Does not contain specific chemical substances such as MOCA or lead - Does not contain substances regulated due to sick house syndrome - Complies with systems and standards such as the "Ministry of Health, Labour and Welfare's Indoor Chemical Substance Concentration Guideline Values" - Reliable waterproof performance due to excellent elongation - Utilizes the characteristics of highly elastic polyurethane *For more details, please refer to the PDF document or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material

"HC Eco Proof" is a fast-curing urethane coating waterproofing material that guarantees clean and speedy application, as well as reliable finishing quality. By selecting and combining primer and topcoat materials that do not contain toluene or xylene, it can be used as a waterproofing system that considers the safety of workers and users of the building. 【Features】 ■ Contains no MOCA or lead ■ Contains no aromatic organic solvents ■ Environmentally friendly materials ■ F☆☆☆☆ certified product ■ Excellent fast-curing properties that harden by the next day even in severe winter conditions *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Coating film waterproofing material/permeable waterproofing material

Mast Corporation is a comprehensive trading company for waterproof materials. We handle materials from various manufacturers, including Nisshin Kogyo Co., Ltd., Mitsuboshi Belt Co., Ltd., and Toyo Rubber Chemical Products Co., Ltd. For inquiries regarding waterproofing or orders for waterproof materials, please feel free to leave it to us. 【Business Activities】 ■ Sales of various waterproof materials ■ Sales of various anti-corrosion and chemical-resistant construction materials ■ Sales of various rooftop greening construction materials ■ Sales of various painting and flooring construction materials ■ Sales of machinery, tools, and by-products related to the above construction *For more details, please contact us.

• Coating film waterproofing material/permeable waterproofing material