Gorilla 100% Silicone Sealant (Clear, 10 oz) Review (2026)
By The DIYPicks Team · Updated July 2026
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- Showers
- Tubs
- Sinks
- Waterproofing
A 100% silicone sealant built for the wettest bathroom joints - showers, tubs, and sinks. It is water-ready in about 30 minutes, carries lifetime mold and mildew resistance, and stays flexible without yellowing or cracking. Like all silicone it cannot be painted, so pick clear or a matching color, but for pure waterproofing it is a top choice.
Pros
- 100% silicone is fully waterproof and water-ready in about 30 minutes
- Lifetime mold and mildew resistance for constant-moisture shower and tub joints
- Will not yellow, shrink, or crack and stays flexible on moving joints
Cons
- Silicone cannot be painted, so match the color to the fixture up front
- Strong acetic (vinegar) odor while curing; ventilate the bathroom
- Uncured silicone is messy and hard to tool cleanly for beginners
Specifications
| Type | 100% silicone sealant |
|---|---|
| Water-ready | ~30 min |
| Full cure | ~24 hr |
| Mold resistance | Lifetime mold and mildew resistant |
| Standard | Meets ASTM C-920 Class 35 |
| Temp range | -40F to 350F service |
| Paintable | No (silicone) |