What are the best mildew-resistant zipper materials for canvas sofa covers?

When selecting zipper materials for canvas sofa covers, mildew resistance is a critical factor to ensure longevity and hygiene. The best options include:

1. Coated Brass Zippers: Brass zippers with a waterproof coating (like PVC or PU) resist moisture and mold growth while offering durability.

2. Nylon Zippers with Rustproof Teeth: Nylon zippers treated with anti-corrosive coatings are lightweight and mildew-resistant.

3. Stainless Steel Zippers: Highly resistant to rust and mildew, these are ideal for humid environments.

4. Plastic (Vislon) Zippers: Made from molded plastic, these zippers repel water and resist mold naturally.

For optimal performance, pair these zippers with mildew-resistant canvas fabric and ensure proper ventilation to minimize moisture buildup. Regular cleaning and occasional UV exposure can further prevent mildew formation. Choose materials based on your climate and usage needs for the best results.