アーキヤマデ List of Products and Services

エネブリッドシリーズは、陸屋根における太陽光設備の固定システム。 軽量、乾式が特徴。また、リベットルーフ防水システムによる屋上の防水改修を前提にしているため、「太陽光設備を置くときに屋上防水が心配」ということはありません。 太陽光設備の設置と同時に（防水改修を行うため）、新規の防水保証が10年間得られます。 使用する防水シートは耐候性と耐久性に優れるため、太陽光パネルの設置期間中も安心して設備の維持管理ができます。 デッキプレート下地の屋根にも対応します。工場、倉庫、研究施設の屋根で活躍しています！

• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Solar power generation equipment
• Waterproofing work

Examples of Simultaneous Introduction of Waterproof Renovation and Solar Module Installation in Public Buildings ~What to Consider When Installing Solar Modules?~ There is an increasing number of cases where solar equipment is installed simultaneously with waterproof renovation on the rooftops of public buildings. The background includes two major reasons: the global trend towards decarbonization and the soaring electricity costs. For example, in Minoh City, Osaka Prefecture, the "School Facility Environment Improvement Grant," a national subsidy, was maximally utilized to introduce solar equipment alongside waterproof renovations at all 20 public elementary and junior high schools in the city (see the photo above). This section will explain the key points when introducing solar equipment simultaneously with waterproof renovations in public buildings. For more details, please download the PDF and check it.

• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Solar System Solar Module
• Solar power generation

This is a case study of the rooftop greening system "Prio Garden." By considering waterproofing in rooftop greening, we can prevent troubles such as waterproofing construction, maintenance of plantings, and load on the building in advance. The planting base of "Prio Garden" not only meets the requirements for lightweight materials in rooftop greening but also maintains water retention, drainage, and air permeability in a state suitable for plant growth. A lush garden on the rooftop creates a gentle amenity space.

• Wall and rooftop greenery
• Waterproof sheet
• Waterproofing work

This is a case study collection of the PVC resin sheet "Rivet Roof" developed and manufactured by Archiyamade Co., Ltd. It includes numerous contents related to PVC sheet waterproofing, such as interviews with architects and explanations of case studies. The collection features examples that meet contemporary needs, such as sheet waterproofing cases in wooden buildings and the installation of solar equipment on flat roofs, and is published annually as a single volume. Customers looking for case studies under specific conditions are encouraged to contact us via the inquiry form. For detailed product information, please refer to the Archiyamade general catalog and product catalog.

• Roof and gutter construction
• Waterproof sheet
• Solar mounting brackets and fittings (solar fittings and protective sheets)

Archiyamade 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 "waterproof integrated 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.

• Roof and gutter construction
• Waterproof sheet
• Solar mounting brackets and fittings (solar fittings and protective sheets)

AY Bond 800 is a water-based acrylic adhesive designed specifically for the "PVC Sheet Waterproofing Material Rivet Roof," taking environmental considerations into account. Since it does not contain organic solvents, there are no concerns about solvent odors or skin irritation, allowing for safe use. It not only improves the working environment for contractors but is also a product that is friendly to nearby residents. With a single-sided application to the substrate, it has adhesive strength equivalent to AY Bond 580NF. It can be used for the rivet roof adhesion method (on concrete substrates). For more details, please refer to the rivet roof catalog. ● Solvent-free, safe, and low odor ● Labor-saving with single-sided application ● Non-hazardous and easy to store

• Waterproof sheet
• glue
• Waterproofing work

The AY snow stop hardware is a snow stop specifically designed for rivet roofs, featuring a PVC coating on the product surface. It prevents snow from falling in snowy regions. By securing it with anchor fixation to the structure, it ensures high strength and achieves excellent water tightness through fusion bonding with the rivet roof. When used in conjunction with the rivet roof ART, it results in a more natural finish.

• Others/Roofing materials (shingles, cement, steel sheets, aluminum)
• Roof and gutter construction
• Disaster prevention fittings

To make it easier for helicopters to find their destination during disasters, the number of "heli signs" that paint facility names on rooftops is increasing. A heli sign is an aerial display that is installed on rooftops, such as "H marks," "R marks," or facility names, to be easily visible from helicopters above during emergencies. The Rivet Roof Heli Sign System achieves high visibility and durability. It uses a retroreflective film type that is highly durable and has long-lasting reflectivity. The letters are delivered pre-cut into parts, making installation smooth. Our product realizes heli signs using PVC sheet waterproof material "Rivet Roof."

• Waterproof sheet
• Roof and gutter construction
• Waterproofing work

To make it easier for helicopters to find their destination during a disaster, the number of "heli signs" that paint facility names on rooftops is increasing. A heli sign is an "aerial display" that is installed on rooftops, such as "H marks," "R marks," or "facility names," to be easily visible from helicopters above during emergencies. This product realizes heli signs using waterproof PVC sheet material called "Rivet Roof."

• Waterproof sheet
• Waterproofing work
• Roof and gutter construction

The LCS-R method for ribbed roofs is a trusted metal substrate insulation waterproofing renovation method that has gained customer satisfaction by accommodating various shapes and construction conditions, such as standing seam roofs, tile roofs, and deck plate substrates. We have added the LCS-R2 method to our lineup as a renovation method for cases where an existing waterproof layer is present, allowing us to respond to even more diverse construction conditions.

• Waterproof sheet
• Waterproofing work
• Roof and gutter construction

The PVC resin sheet waterproofing material "Rivet Roof" LCS method (metal substrate insulation waterproofing method) is a waterproofing technique that maximizes the advantages of the lightweight nature of metal roofs. It constructs a waterproof layer by layering insulation material and PVC sheet waterproofing on top of a deck plate. It is used in various buildings such as commercial facilities, factories, warehouses, and exhibition halls.

• Waterproof sheet
• Waterproofing work
• Roof and gutter construction

This is a rooftop waterproofing system using PVC resin-based sheet waterproofing material "Rivet Roof." It is compatible with various roof substrates, including RC substrates, deck plate substrates, standing seam roofs (for waterproofing renovation purposes), tile batten roofs (for waterproofing renovation purposes), and wooden structures. It easily accommodates various specifications such as high insulation, high solar reflectivity, and long lifespan, responding to the desire to achieve specific goals for rooftop waterproofing construction.

• Roof and gutter construction
• Others/Roofing materials (shingles, cement, steel sheets, aluminum)
• Waterproofing work

Pool waterproofing requires safety during pool use, chemical resistance, as well as aesthetic beauty and harmony. The "AY Pool Waterproofing System" from Archiyamade offers a pool waterproofing system that utilizes rivet roof waterproofing technology. The walking design sheet "Corridor," used at the poolside, comes in a variety of colors and patterns, allowing for free combinations. It is a high-function sheet that combines comfort and safety. ● For more details, please download the catalog.

• Pool equipment related
• Waterproof sheet
• Waterproofing work

The linked disk ADC is a solar foundation that can be utilized when installing solar power generation equipment on rooftops. By combining it with the PVC sheet waterproofing system "Rivet Roof," it demonstrates high water tightness, enabling reliable installation of solar equipment. Its feature is a mechanism where the waterproof sheet integrates with it, creating a "waterproof layer down to the foundation." There is no concern about damaging the waterproof layer when installing solar panels on flat roofs. Unlike the placed foundation type, it is lightweight, weighing only about 4 kg/m² (this value is for the foundation part only). This makes it possible to install solar power systems on various flat roofs that were previously abandoned. Since it can be constructed dry, project management is smooth. The rooftop waterproofing contractor handles the foundation installation, making it easy for electrical work to simply involve placing the panels and performing wiring tasks. *For more details, please refer to the PDF or feel free to contact us.*

• Solar power generation equipment
• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Waterproofing work

The "Prio Garden" planting substrate not only meets the requirements for lightweight materials in rooftop greening but also maintains water retention, drainage, and aeration in a condition suitable for plant growth. A lush garden on the rooftop creates a gentle amenity space. ■ Benefits of Rooftop Greening - Heat island mitigation - Energy-saving effects - Improved aesthetics and soothing greenery - Protection of the building For more details, please request the materials.

• Landscaping and planting
• Wall and rooftop greenery
• Waterproofing work

"Corridor" is a slip-resistant vinyl flooring sheet that reduces the risk of falls and provides excellent sound insulation, offering a comfortable walking experience. It is resistant to wear and scratches, highly durable, and thanks to its "inlaid structure," even if the surface is worn down, the color and pattern remain the same, maintaining a beautiful floor surface over the long term. This long-length flooring material boasts excellent durability, capable of withstanding harsh outdoor conditions such as heat and UV rays from the sun, as well as rainwater and sand, making it suitable for open corridors, rooftops, and balconies in apartment buildings. 【Features】 ■ Strong against wear and scratches due to a thick special PVC layer ■ Resistant to UV rays and direct sunlight, keeping the floor surface looking clean for a long time ■ Slip-resistant even when wet ■ Attention to design, rich in aesthetic appeal ■ Can be used for general walking purposes in addition to the rooftop waterproofing system "Rivet Roof" *For more details, please refer to the PDF materials or feel free to contact us.

• Cork, rubber flooring, sheet flooring/outdoor
• Laminate Flooring/Outdoor
• Other earthworks, foundation works, and exterior floors

"Rivet Roof ART" is a PVC resin-based sheet waterproofing material specifically designed for sloped roofs. The sheet features a printed pattern to maintain the architectural aesthetics of the building, making it ideal for waterproofing renovations such as asphalt shingle roofs. Its random print eliminates the need for pattern matching, resulting in excellent workability and a natural finish that blends seamlessly into the landscape.

• Waterproof sheet
• Others/Roofing materials (shingles, cement, steel sheets, aluminum)
• Tile and slate roofs

"Axis Coat DX" is an environmentally friendly polyurethane-based waterproof coating material. It excels in workability and leveling properties. Additionally, it maintains good curing performance even in winter while ensuring sufficient usable time. Moreover, it has excellent adhesion with the PVC resin sheet waterproofing "Rivet Roof" series, allowing for the use of Rivet Roof in flat areas and our product around fixtures and at the top edges, resulting in a well-finished installation. 【Features】 ■ Environmentally friendly specifications ■ Coating performance compliant with JIS standards ■ Not subject to the Specific Chemical Substances Hazard Prevention Regulations (Special Regulations) ■ Non-MOCA ■ Does not contain any of the 14 items listed in the indoor concentration guideline values (as per Ministry of Health, Labour and Welfare regulations) ■ Constructs a seamless waterproof layer through a composite method with Rivet Roof *For more details, please refer to the PDF materials or feel free to contact us.

• Coating film waterproofing material/permeable waterproofing material
• Heat-insulating paint for exterior walls (roofs, rooftops, etc.)
• Roof and gutter construction

The "Air Dry System" is a "forced ventilation system" specifically designed for PVC resin sheet waterproof rivet roofs. It is powered by solar energy and is maintenance-free. It expels moisture outside the waterproof layer, reducing humidity within the waterproof layer. As a result, it helps to suppress the corrosion of rebar inside the structure, contributing to the health of the building. It can be introduced not only for exposed waterproof renovations but also for new waterproof construction. 【Features】 - Forced expulsion of moisture through the circulation of outside air - Expected improvement in the health of the structure - Circulation of outside air within the waterproof layer helps to stabilize temperature changes in the structure and indoors - Reduction of heat-related damage to the rivet roof - Registered technology in the new technology information system "NETIS" operated by the Ministry of Land, Infrastructure, Transport and Tourism (No. TH-120012-A) *For more details, please refer to the PDF materials or feel free to contact us.

• Ventilation system

Grid Base M is a solar foundation that can be utilized when installing solar panels on flat roofs. Its feature is a mechanism that integrates with PVC sheet waterproofing material, creating a "waterproof layer up to the foundation." Therefore, there is no concern about "damaging the waterproofing when installing solar panels on flat roofs." Moreover, it enables multi-tier installations for solar panels on flat roofs. Additionally, since it can be constructed using a dry method, project management is smooth. The waterproofing contractor will handle the foundation installation, allowing the electrical work to start from the assembly of the mounting structure, which facilitates smooth project management. *For more details, please refer to the PDF document or feel free to contact us.*

• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Waterproofing work
• Photovoltaic power generation system (solar system, energy-saving housing, electricity sales business)

The "Grid Base L2" is a dry steel foundation that replaces the installation of concrete foundations in existing buildings, which can be cumbersome. The key points are its dry and lightweight nature. Compared to concrete foundations, it is lighter and does not require a concrete curing period, allowing for a reduction in construction time. Additionally, the main body is equipped with drainage, ensuring proper treatment of the waterproof layer's end, which helps reduce waterproofing issues in the long term. It can be efficiently integrated with the PVC sheet waterproofing material "Rivet Roof," achieving a "waterproof layer down to the foundation." 【Features】 ■ High strength and corrosion resistance ■ Convenient height adjustment function ■ Reduced construction time and lightweight ■ Does not create weaknesses in the waterproof layer ■ Flexibly accommodates substrate slopes *For more details, please refer to the PDF document or feel free to contact us.

• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Solar power generation equipment
• Waterproofing work

"Kurakutaito" is a molded expansion joint material used to prevent cracking due to the shrinkage of protective concrete. The cap section is made of polyethylene reinforced with glass fibers, providing excellent dimensional stability. The non-vulcanized butyl rubber adhesion layer on the side of the cap section has excellent adhesion to the concrete below, preventing water intrusion and the growth of weeds and other vegetation. Additionally, we also offer "Paraboard," which protects the waterproof layer with a durable board. 【Features (Kurakutaito)】 ■ Wide range of product offerings ■ Cap section with excellent dimensional stability ■ Butyl rubber adhesion layer prevents water intrusion and the growth of weeds ■ Dry type designed for cost performance ■ Absorbs movement of concrete *For more details, please refer to the PDF document or feel free to contact us.

• Waterproofing work
• Roof and gutter construction
• Concrete construction

"Paratop" offers a lineup that corresponds to various parts of the rooftop, such as drainage, coping, and fastening hardware. Lightweight and excellent in workability, it covers various types used in rooftop waterproofing. Each product is designed with a solid consideration for effective rainwater management, from the perspective of a waterproofing material manufacturer. 【Features】 ■ Lightweight ■ Excellent workability hardware ■ Covers types used in rooftop waterproofing ■ Contributes to enhancing the architectural design of buildings *For more details, please refer to the PDF materials or feel free to contact us.

• Fastening hardware

The "Paraboard," a protective material for vertical waterproofing, protects the vertical waterproofing layer with a durable board, shielding it from UV degradation and thermal degradation caused by sunlight, as well as physical damage. For more details, please request the materials.

• Waterproofing work
• Others/Roofing materials (shingles, cement, steel sheets, aluminum)
• Reinforced concrete construction

"Ribbet Roof COOL" is a PVC resin-based sheet waterproofing material that efficiently reflects sunlight and suppresses temperature rise on the sheet surface. By lowering the temperature of the sheet itself, it helps to reduce heat influx into buildings during the summer, resulting in a reduction of air conditioning load. ● Prevents infrared radiation and reduces heat accumulation in buildings It contains special pigments with high reflective properties in the infrared wavelength range, allowing for efficient reflection of infrared radiation and reducing heat accumulation in buildings. ● External insulation for heat shielding! Further energy savings! By using external insulation methods to block the structure from the outside air, it reduces thermal stress on the structure and prevents cracking and condensation. It addresses concerns such as "the building is hot" and "I want to reduce air conditioning costs" in summer, and "efficient heating" and "I want to reduce condensation" in winter. ● Can be used on various types of roofs It is compatible with RC, PC, PCa, as well as ALC panel substrates and metal substrates (deck plates, folded plate roofs, and tile roofs), as well as wooden substrates.

• Waterproof sheet
• Waterproofing work
• Heat-insulating and moisture-permeable roofing

"Rivet Roof HP" is a high-durability grade waterproof sheet manufactured with a special formulation aimed at long service life. It features minimal changes in physical properties due to ultraviolet rays and heat, with only slight discoloration. ● Durability confirmed through verification tests In artificial accelerated exposure tests, even after an equivalent of 30 years, the elongation retention rate exceeds 60%, and it is evaluated as sufficiently maintaining its waterproof function. ● Reduces the life cycle cost of buildings By using the high-durability sheet "Rivet Roof HP," a healthy waterproof layer can be maintained for an extended period. As a result, it reduces the frequency of waterproof renovations, achieving cost savings. ● Can be utilized on various roofs It is compatible with RC, PC, PCa, as well as ALC panel substrates and metal substrates (deck plates, standing seam roofs, tile roofs), and wooden substrates.

• Waterproof sheet
• Waterproofing work
• Roof and gutter construction

【Features】 ■ Excellent water resistance, durability, and weather resistance ■ Abundant color variations ■ High quality proven through various verification tests ■ Options to choose "waterproof sheets" and "construction methods" according to needs

• Waterproof sheet
• Waterproofing work
• Roof and gutter construction

【Features】 ■ Excellent water resistance, durability, and weather resistance ■ Rich color variations ■ High quality proven through various verification tests ■ Options to choose "waterproof sheets" and "construction methods" according to needs

• Waterproof sheet
• Waterproofing work
• Roof and gutter construction

【Features】 ■ Excellent waterproofness, durability, and weather resistance ■ Abundant color variations ■ High quality proven through various verification tests ■ Options to choose "waterproof sheets" and "construction methods" according to needs

• Waterproof sheet
• Metal roof
• Waterproofing work

The linked disk ADC is a solar module installation frame that can be utilized when installing solar power generation equipment on flat roofs. Its feature is that it integrates with the PVC sheet waterproofing material "Rivet Roof," creating a system where "the foundation is also a waterproof layer." Therefore, there is no concern about "damaging the waterproofing when installing solar panels on a flat roof." Moreover, unlike the so-called placed foundation type, it is lightweight, weighing only about 4 kg/m² (this value is for the foundation part only). As a result, it enables the installation of solar power systems on various flat roofs that were previously abandoned. It is also fine if there is a slight roof slope. It accommodates various roof substrates. Additionally, since it can be constructed dry, project management is smooth. The waterproofing contractor will handle the foundation installation on the rooftop, making it easy for electrical work to simply involve placing the panels and performing wiring tasks. *For more details, please refer to the PDF materials or feel free to contact us.*

• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Waterproofing work
• Solar power generation equipment

The linked disk ADC is a waterproof material-integrated solar mounting foundation that enables the installation of solar panels on flat roofs. It is lightweight and dry, featuring integration with the waterproof layer. Additionally, it is designed with the assumption of waterproof renovation using a rivet roof waterproofing system, so there are no concerns about rooftop waterproofing when installing solar equipment. When installing solar equipment simultaneously (to carry out waterproof renovation), a new waterproof guarantee of 10 years is obtained. The waterproof sheet used is excellent in weather resistance and durability, allowing for safe maintenance and management of the equipment during the installation period of the solar panels. It accommodates various roof substrates, including RC bases and deck plate bases. *Please note that the range of compatibility may vary depending on the substrate and building location conditions. For more details, please contact us.

• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Solar power generation
• Waterproofing work

The Enebrid series is a fixed system for solar equipment on flat roofs. It is characterized by being lightweight and dry. Additionally, since it is based on waterproofing renovations using a rivet roof waterproofing system, there is no concern about roof waterproofing when installing solar equipment. A new waterproofing warranty of 10 years is obtained simultaneously with the installation of the solar equipment (to carry out waterproofing renovations). The waterproof sheets used are excellent in weather resistance and durability, allowing for peace of mind in maintaining the equipment during the installation period of the solar panels. It is also compatible with roofs that have a deck plate substrate. It is actively used on the roofs of factories, warehouses, and research facilities!

• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Solar power generation equipment
• Waterproofing work

The Enebrid series is a fixed system for solar equipment on flat roofs. It is characterized by being lightweight and dry. Additionally, since it is based on a waterproofing renovation using a rivet roof waterproofing system, there is no concern about "worrying about roof waterproofing when placing solar equipment." When installing solar equipment, a new waterproofing guarantee of 10 years is obtained simultaneously (to carry out the waterproofing renovation). The waterproof sheets used are excellent in weather resistance and durability, allowing for safe maintenance and management of the equipment during the installation period of the solar panels. There are numerous case studies of implementation on RC substrates, such as school rooftops and apartment rooftops.

• Solar mounting brackets and fittings (solar fittings and protective sheets)
• Waterproofing work
• Photovoltaic power generation system (solar system, energy-saving housing, electricity sales business)

【Features】 ■ Excellent water resistance, durability, and weather resistance ■ Abundant color variations ■ High quality proven through various verification tests ■ Options to choose "waterproof sheets" and "construction methods" according to needs

• Waterproof sheet

"Rivet Roof ART" for waterproofing renovations such as asphalt shingle roofs We will carry out waterproofing renovations using pre-printed, durable, and weather-resistant PVC sheets. By "overlaying" new waterproofing on top without removing the existing waterproof layer, we can reduce waste and ensure speedy installation. Additionally, the random pattern eliminates the need for pattern matching, enhancing workability. The colors and patterns are highly designed to blend well with the surrounding landscape of the building, contributing to the maintenance of the building's aesthetic.

• Waterproof sheet

【Features】 ■ Excellent water resistance, durability, and weather resistance ■ Abundant color variations ■ High quality proven through various verification tests ■ Options to choose "waterproof sheets" and "construction methods" according to needs

• Waterproof sheet

"Rivet Roof ART" for waterproof renovation of asphalt shingle roofs and more We use pre-printed, durable, and weather-resistant PVC sheet waterproofing for the renovation. By "overlaying" new waterproofing on top without removing the existing waterproof layer, we can reduce waste and ensure speedy installation. Additionally, it features a random pattern that does not require pattern matching, enhancing workability. The colors and patterns are highly designed to blend well with the surrounding landscape of the building, contributing to the maintenance of the building's aesthetic appeal.

• Waterproof sheet
• Waterproofing work
• Roof and gutter construction

"Rivet Roof" is a high-quality sheet waterproofing that excels in durability and weather resistance. By using a special formulation with PVC resin as the main raw material, it minimizes changes in physical properties due to temperature fluctuations and ultraviolet rays. We offer systems that accommodate various rooftop shapes and substrate types, meeting diverse waterproofing needs. We have a lineup that includes "Rivet Roof COOL," which efficiently reflects sunlight and helps suppress the heat island phenomenon, and "Rivet Roof HP," a high durability grade manufactured with a special formulation aimed at long lifespan. [Features] ■ Hybrid sheet waterproofing ■ High water tightness ■ High quality proven through various tests ■ Product design with excellent durability based on various exposure evaluations ■ Fire-resistant materials ■ Uniform finish *For more details, please refer to the PDF materials or feel free to contact us.

• Waterproof sheet

"Ribetto Roof" is a PVC resin-based sheet waterproofing that protects rooftops from harsh natural environments. It is an ideal product for waterproofing flat roofs. Made primarily from weather-resistant and durable polyvinyl chloride resin, it is characterized by its resistance to temperature fluctuations between summer and winter. The single sheet has a multi-layer structure, with each layer serving roles such as "UV cut," "ensuring weather resistance," "maintaining dimensional stability," and "retaining mechanical strength," all working together to form a high-quality sheet waterproofing. In particular, the unique MMA resin layer enhances weather resistance by cutting UV rays. 【Features】 ■ Excellent water tightness, durability, and weather resistance ■ A wide variety of color options ■ High quality proven through various testing ■ Options to choose "waterproof sheets" and "construction methods" according to needs

• Waterproof sheet
• Waterproofing work
• Roof and gutter construction

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.

• Joint material
• Others/Roofing materials (shingles, cement, steel sheets, aluminum)
• Waterproofing work