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What common problems usually occur when using silicone sealant?

What common problems usually occur when using silicone sealant?

2026-04-15
Common Problems During Construction
Adhesion Failure:

The substrate surface is not cleaned before construction, leaving dust, oil, or moisture, which prevents the sealant from adhering tightly; some porous substrates (such as concrete or stone) are not primed, resulting in poor compatibility between the sealant and the substrate.

Abnormal Curing:

Extremely low environmental temperatures (below 5°C) or low humidity (relative humidity <40%) can prolong curing time or even prevent the sealant from fully curing; applying the sealant too thickly may result in the surface curing while the inside remains uncured.

Appearance Defects:

Uneven application speed or improper technique can cause bubbles, uneven surfaces, or rough edges in the sealant joint; failure to promptly clean overflowed sealant can result in hard-to-remove residues after curing.

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