Ordinary glass adhesive (e.g., neutral or acidic silicone sealant) typically lacks mold-resistant properties due to the following reasons:
1. No Mold Inhibitors in Formulation
The main component of standard silicone sealant is silicone polymer, which provides adhesion and sealing but has no inherent antimicrobial
properties.
Mold-resistant sealants contain added biocides (e.g., isothiazolinones, nano-silver), which are omitted in standard products to reduce costs.
2. Surface Texture Prone to Mold Growth
After curing, the microporous surface of silicone sealant traps moisture, dust, and organic matter, creating an
ideal environment for mold.
In humid areas (e.g., bathrooms, kitchens), prolonged exposure to moisture accelerates mold growth
3. Industry Standard Differences
Mold-resistant sealants must pass mold-resistance tests, while ordinary sealants only meet basic performance criteria (e.g., tensile strength,
weather resistance).
4. Limited Application Scope
Ordinary sealants are designed for dry or low-humidity environments (e.g., window installation, glass bonding), where mold resistance is
unnecessary.
If mistakenly used in wet areas, mold may appear within 1–2 years.
How to Prevent Mold in Silicone Sealant?
Choose the Right Product: Opt for "Grade 0 Mold-Resistant" silicone in humid zones.
Proper Application: Ensure seams fully cure before water exposure, and avoid gaps that trap moisture.
Maintenance: Clean seams regularly with bleach or mold-removal sprays to delay regrowth.
For long-term mold resistance, consider MS polymer sealants or epoxy grout, which offer superior durability.
Your message must be between 20-3,000 characters!