Cold Formed Steel
Maintenance and Cleaning
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Cold Formed Steel
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Maintenance
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Cleaning
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| Austenitic stainless steel to BS 970: Part 1, grade 316 or 304. |
None
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Simple maintenance of steel by regular washing with water. Applications where the paint finish is automatically washed by rainwater do not usually require this maintenance.
Areas not regularly washed by rainwater should be hosed down at least every six months and more frequently in coastal areas where marine salt spray is prevalent, and in areas where high levels of industrial fallout occur. In cases where the regular maintenance referred to above does not remove all dirt which may have adhered to the surface of the paint, the following procedure should be carried out: 1. Wash the surface with a mild solution of pure soap or mild non-abrasive kitchen detergent in warm water. 2. Application should be with a sponge, soft cloth or soft bristle nylon brush, and should be gentle to prevent shiny spots. 3. The steel should be thoroughly rinsed with clean water immediately after cleaning to remove traces of detergent. Never use abrasive or solvent type cleaners.
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| Post-galvanized mild steel, minimum 600g/m² zinc coating weight. | If painted, redecorate every 5 years. | |
| Pre-galvanized mild steel, minimum 600g/m² zinc coating weight. Factory applied organic coating, 25-50 microns nominal thickness. | Coatings may require redecoration after 10-15 years. | |
| Mild steel, molten zinc sprayed after fabrication, minimum 700g/m² zinc coating weight. | If painted, redecorate every 5 years. | |
| Pre-galvanized or post-galvanized mild steel, minimum 450g/m² zinc coating weight. Factory applied organic coating, 25-50 microns normal thickness. | Coatings may require redecoration after 10-15 years. | |
| Pre-galvanized or post-galvanized mild steel, minimum 275g/m² zinc coating weight. Factory applied organic coating, 25-50 microns normal thickness. | Coatings may require redecoration after 10-15 years. | |
| Pre-galvanized or post-galvanized mild steel, minimum 275g/m² zinc coating weight. | If painted, redecorate every 5 years. | |
| Mild steel protected with an appropriate Micaceous Iron Oxide, Chlorinated Rubber or similar high performance finish to give a minimum dry film thickness of 250 microns. | Redecorate every 5 years. | |
| Unclassified, ie mild steel ‘factory primed’ or less than above specifications. | Unclassified |