Polyurethane foams are modern and user-friendly materials to help solve a wide range of tasks in construction. They are easy to use, safe for humans and the environment, after curing they have high mechanical strength, and significantly accelerate installation works. TECHNONICOL offers single-component PU foam products that are cured by moisture, have a stable formulation, a large primary expansion, and an increased content of closed pores. Expanding foam provides excellent thermal and sound insulation, does not create excessive pressure on structural elements, and has excellent adhesion to concrete, brick, wood, metal, etc.
Types of PU foams
The supplier offers several products fr om the PU foam series, which are designed to solve a specific installation or repair task.
- Sealing foam TECHNONICOL MASTER is a material adapted for use without special devices and equipment. The aerosol can is equipped with an adapter for easy application. It is used for sealing gaps, joints, cavities, cracks, technological holes, etc.
- Sealing foam TECHNONICOL MAXIMUM serves the same purposes. Manufacturers recommend this product for professional use at large facilities. It requires a polyurethane foam gun for proper application.
- For high requirements about fire protection at facilities, the Company developed fire-resistant sealing foam TECHNONICOL 240 with a fire-resistance limit of 240 minutes. It has the stability to moisture, mold, and aging, excellent adhesion to most materials, and creates reliable thermal and sound insulation. It is applicable for assembling any fire-resistant structures, sealing joints, filling voids between walls and floor slabs to provide additional protection against fire.
- Spray foam insulation TECHNONICOL MASTER is used to create a full layer of thermal and sound insulation on walls, partitions, floor slabs, foundations, and other structures with a complex geometric surface, as well as on engineering communications (pipes, penetrating elements, ventilation ducts). It is applied by a polyurethane foam gun with a special nozzle, which is supplied with an aerosol can.
- Fixing of thermal insulation boards, gluing of various panels and other elements is conveniently carried out with the help of gluing foam TECHNONICOL 500 in aerosol cans. Suitable for outdoor and indoor work. The adhesive foam is resistant to moisture, mold, and aging has excellent adhesion to mineral surfaces, wood, chipboard, OSB, brick, etc. With the help of gluing foam TECHNONICOL 500, it is possible to quickly and firmly fix stone wool, PIR, XPS and EPS slabs when installing external and internal thermal insulation systems, fix decorative panels made of wood and plastic, glue drywall panels, plywood, and OSB and seal the gaps between the insulation boards.
- After installation work, PU expanding foam often remains on the working surface of windows and door frames, clothing, plastic elements. The Company has developed a special foam cleaner TECHNONICOL based on an organic solvent mixed with propellant for effective cleaning of its uncured residues, washing the gun. It is sprayed from a can with a spray nozzle or a polyurethane foam gun.
Areas of application
In terms of thermal insulation characteristics, TECHNONICOL polyurethane foams are superior to many analogs. High elasticity, excellent adhesion to the base and good initial expansion make them indispensable insulation materials. Closed cells of insulating foam sealant maintain the desired temperature inside the room and do not allow moisture to pass inside. After curing, very light PU foam material has a high compressive strength, does not shrink or weigh down, and strengthens structures.
The main purpose of polyurethane foams is to fill joints, voids, gaps, cracks with additional functions of thermal and sound insulation. Expanding polyurethane foam allows filling the space between wall panels and cracks wh ere it is impossible to put other insulation. With the help of spray foam insulation, it is possible to create a complete thermal and sound insulation layer on the floor slabs, wall partitions, foundations, and other structures with a complex geometric surface, as well as on utilities. Adhesive PU foam securely binds thermal insulation boards, various panels and other elements.
How to use it
Before using PU foams, one should wear gloves and work clothes. It is important to ensure that the foam does not get into the eyes and on the mucous membranes during operation. Single-component PU foam cures with moisture, so the work surface must be pre-moistened with water. The can is shaken, a gun for polyurethane foams is put on and the bottom is turned up when applying the material. Vertical gaps and cracks are filled with foam from the bottom up. In case of use in joints of more than 50x40 mm, it is recommended to apply the polyurethane composition in several layers with each layer moistened. The remaining foam is removed from the tool and the working surface with a foam cleaner.
Full hardening and strength gain occurs within about 24 hours. Polyurethane sealing foam is destroyed by ultraviolet, so it is necessary to protect it after hardening with putty, water-based paint, metal board, etc.
