5 Day Craftmanship course
Day 1.- Generalities/ Safety * Tour of installations.- purpose of every equipment. * Introduction and explanation on spraying equipment. * Different equipment, guns.- differences and advantages. * What's polyurethane? How many kinds are there? Insulators. * Instruments for measurements.- optical comparator, depth gauge, etc. * Chemicals.- Introduction, equipment, properties. * Safety and Protection.- Why and how to use protective materials. * Material Safety Data Sheets.- what to do with residues. Day 2.- Polyurethane spraying * Spraying methods and conveniences. * Working with a proportioner.- check up list. * Substrate preparation / Primers. * Spraying in cold and hot weather.- differences & problems. * Spraying in high wind.- booths, screens. * Details and drains.- done first, how and why. * Automated equipment.- how and why using them. Day 3.- Polyurethane spraying.- continuing. * Types of roofing.- which are they, advantages. * Foam problems.- what are they and how to solve them. * Types of roofs.- wood, metal, concrete. Differences & care. * Density/compression/yield.- relation between properties. * Catalyzers.- relation between heat/pressure/foam quality. * Leveling.- how to level a substrate quick and easy. Day 4.- Coatings and sealants. * Coatings.- types, how they work, advantages on each type. * Application.- temperature, humidity, pinholes, blisters, adhesion. * Thickness / Lasting.- uniform application. * Other applications for coatings.- polyureas. * Spraying acrylics and silicon. * Maintenance of equipment.- how to take a gun apart. Day 5.- Roof Maintenance / Recoating. * Maintenance.- roof examination, minor repairs. * How to locate leaks in foam roof. * When to recoat and why.- (scarfer) recoating advantages. * Evaluation.- written test, diploma, questions and answers.
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