HP2 100% Silicone Interior Sealant

Why Pros Choose HP2

Premium neutral-cure silicone for kitchens, baths, and interior finish work.
HP2 delivers durable, long-term performance in wet or humid environments where 100% silicone is the preferred choice. Its low-odor, neutral-cure chemistry makes it compatible with modern finishes and non-porous building materials.

Optimized for interior applications, HP2 may also be used in select exterior situations on smooth, non-porous substrates such as glass, vinyl, and coated metals.

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Key Benefits

• Neutral-cure, low-odor RTV — non-corrosive to metals
• Excellent primerless adhesion to glass, ceramic, fiberglass, coated surfaces & many plastics
• ±50% movement capability for high-flex joints
• Waterproof, mold-resistant, and shrink-proof
• Will not yellow, crack, or degrade
• Low VOC, LEED® compliant
• Non-paintable (apply paint before sealing)
• Suitable for limited exterior use on non-porous surfaces

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Where to Use It (Interior)

• Showers, tubs & tile surrounds
• Sinks, vanities & backsplashes
• Countertops & wet-area transitions
• Mirrors & glass-to-metal joints
• Kitchen & bath fixtures
• Interior trim and finish joints
• General interior maintenance sealing

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Optional / Limited Exterior Uses

For smooth, non-porous substrates only:

• Light trim or finish touch-ups
• Vinyl window perimeters (protected areas)
• Glass-to-metal or glass-to-coated-surface joints
• Non-porous repair joints not exposed to heavy weather

For exterior siding, high-movement joints, or field installation conditions, HP4 Hybrid Polymer is recommended.

For exterior glazing, HP3 100% Silicone is preferred.