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Coastal Steel Roof Projects: Waterproofing and Anti-Corrosion Methods

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Coastal areas bring unique challenges to steel roof structures, with high salt spray, humid air, strong winds, and heavy rainfall accelerating corrosion and leakage. These issues shorten service life, increase maintenance costs, and pose potential safety hazards. For large-span steel roof projects in coastal regions, scientific waterproofing and anti-corrosion measures must be integrated into material selection, construction, and daily maintenance to ensure long-term stability. Below are concise, practical solutions for these two core issues. Anti-Corrosion Strategies: Combating Salt Spray and Humidity Salt spray is the main cause of steel corrosion in coastal areas, as chloride ions penetrate coatings and damage steel structures. Effective anti-corrosion depends on a multi-layer protection system combining high-quality materials and optimized construction. 1. Anti-Corrosion Material Selection Opt for high-performance anti-corrosion steel plates instead of ordinary galvanized ones,...
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What are the performance characteristics of the various core materials of colour steel composite panels?

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 Introduction to the performance of various core materials of colour steel composite panels



(1) Foam board

From the optional polystyrene (EPS) particles as raw materials, shape like fertilizer particles, pre-foaming by heating, into a white pearl-like larger particles, and then heated in the mold and pressed into shape and made with micro-fine closed-cell structure of the foam plastic sheet.

(2) Polyurethane High energy-saving performance

Excellent fireproof and thermal insulation properties of the material, used to do composite panels of polyurethane capacity of 30 kg - 40 kg in general

(3) Rock wool board

It is made of basalt as the main raw material, melted at high temperature and then made into inorganic fibres by high-speed centrifugal equipment, while evenly adding a certain proportion of adhesive baked into a large board, cut into rock wool strips according to production needs, rock wool is a non-combustible body with good fire performance.

(4) Glass wool

It is a light, heat-resistant, elastic and otherwise thermal insulation material, widely used in chemical, pharmaceutical, factories, heavy industrial machinery and equipment, construction, vehicles and ships, aerospace, and is an ideal material for heat breaking, fire prevention and sound absorption.

(5) Flame retardant paper honeycomb board

For the national B1 level fireproof material, has the advantages of good flame retardancy, good compressive strength, only carbonization not burning, no toxic substances, waste can be completely recycled, etc., is the ideal substitute for polystyrene, polyurethane, rock wool and other core materials.

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