At LaPorte Painting, we follow many steps and standards to make sure that your steel painting job is done right the first time. This starts with proper surface preparation. Depending on your needs, we will follow the Steel Structures Painting Council’s recommendations. Listed below are the specifications for each type of surface preparation.
|SPECIFICATION AND SUBJECT||DESCRIPTION|
|Removal of oil, grease, dirt, soil, salts, and contaminants by cleaning with solvent, vapor, alkali, emulsion, or steam.|
Hand Tool Cleaning
|Removal of loose rust, loose mill scale, and loose paint to degree specified, by hand chipping, scraping, sanding, and wire brushing.|
Power Tool Cleaning
|Removal of loose rust, loose mill scale, and loose paint to degree specified, by power tool chipping, descaling, sanding, wire brushing, and grinding.|
White Metal Blast Cleaning
|Removal of all visible rust, mill scale, paint, and foreign matter by blast cleaning by wheel or nozzle (dry or wet) using sand, grit, or shot. (For very corrosive atmosphere where high cost of cleaning is warranted.)|
Commercial Blast Cleaning
|Blast cleaning until at least two thirds of each element of surface area is free of all visible residues. (For rather severe conditions of exposure.)|
Brush-Off Blast Cleaning
|Blast cleaning of all except tightly adhering residues of mill scale, rust, and coatings exposing numerous evenly distributed flecks of underlying metal.|
|Complete removal of rust and mill scale by acid pickling, duplex pickling, or electrolytic pickling.|
Near-White Blast Cleaning
|Blast cleaning nearly to White Metal cleanliness, until at least 95% of each element of surface area is free of all visible residues. (For high humidity, chemical atmosphere, marine, or other corrosive environment.)|
Power Tool Cleaning to Bare Metal
|Complete removal of all rust, scale, and paint by power tools with resultant surface profile.|
Once we have prepared your surface, we move on to the application. Below are just some of the standards that we follow as we do your job.
All work shall be performed with good clean brushes, rollers, spraying equipment which will produce a finished surface free of drops, ridges, waves, laps, and brush marks. Air filters and traps will be installed on blasting and spraying equipment to remove moisture and oil from the compressed air.
Paint shall only be applied when the air temperature is above 40 F and less than 100 F, and the relative humidity is less than 85%. Priming shall be discontinued whenever the temperature is expected to drop below 32 F before the primer will dry. Moisture cure paints and primers may be applied per manufacturer’s instructions.
Paint or coating materials shall not be applied in damp weather, when it is raining,snowing, or under any conditions that will result in condensation on the surface to be painted.
Finish coats will not be applied to surfaces on which the primer is scratched until such damaged area has been cleaned and primed.
Each coat of paint shall be in proper state of cure or dryness before the application of the succeeding coat.
We shall always follow the paint manufacturer’s recommendations for mixing, thinning, handling, and applying of their products.
By following these steps and standards, we feel confident standing behind our work and showing you why LaPorte Painting will always do it right the first time.