According to relevant articles in China Corrosion and Protection, the corrosion rate of metals increases significantly when the relative humidity exceeds 60%. In addition, the increase in temperature usually accelerates the corrosion process, and the seawater environment containing chloride ions is particularly aggressive to metal corrosion. Therefore, in hot and humid areas, especially at the seaside, special attention should be paid to moisture-proofing of door hardware.

If door hardware is not moisture-proofed, it will lead to:

Corrosion: Rust stains on hinges and screws weaken structural integrity.

Stiff Mechanisms: Salt particles in humid air cause hinges to jam.

Aesthetic Damage: Mold spots on door handles degrade visual appeal.

3-Step Defense Strategy with Technical Solutions

1. Material Selection: Science Behind the Metals

Stainless Steel (304 Grade): Chromium oxide layer resists 99%  electrochemical  corrosion.

Zinc Alloy with Multi-Coating Tech: Triple electroplating (copper+nickel+chrome) prevents base metal exposure.

Aluminum Alloy for Lightweight Needs: Anodized surface creates waterproof barrier, ideal for indoor partitions.

Command shortcoming of our product: All external door handles pass 72hr+ salt spray test (exceeds industry standards).

2. Installation Tips to Block Moisture

Slope Angle for Door Stoppers: Install door stoppers at 15° tilt to prevent water pooling.

Sealant for Screw Holes: Apply silicone gel around hinge screws .

Avoid Direct Ground Contact: Use 10mm spacer under door bottom for ventilation.

3. Maintenance Checklist 

Why Choose Our Moisture-Proof Hardware?

 The first and most important point：IISDOO is a trusted door hardware supplier with 17 years of expertise in manufacturing high-quality door locks and door handles. Thus, IISDOO is comfortable with how to manufacture corrosion-resistant door hardware products.

Rigorous Testing: 72h+ salt spray certification for coastal areas.

Material Flexibility: Customizable metal combinations.

(The information comes from China Corrosion and Protection Association. Any infringement will be deleted.)