Professional Interior Sealants

Waterproof Sealing for Interior Work.

Kitchens, baths, fixtures, countertops, glazing, and other moisture-prone joints need a flexible, dependable seal. HP3 gives contractors a professional 100% silicone option for everyday waterproof sealing.

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Pro Performance. Delivered.

Choose Silicone When the Joint Needs to Stay Waterproof

Interior sealant selection starts with the finish and exposure. HP3 is the everyday 100% silicone choice when waterproof flexibility matters more than paintability.

Waterproof Joints

Choose HP3 for moisture-prone joints where a durable 100% silicone seal is the priority.

Recommended: HP3

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Kitchens & Baths

Tubs, showers, sinks, countertops, fixtures, and backsplashes all benefit from dependable silicone sealing.

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KITCHEN & BATH

Windows & Glazing

Use HP3 for appropriate silicone sealing and glazing applications where a flexible waterproof seal is required.

See the application guide

WINDOWS & DOORS

When Paintability Matters

HP3 is 100% silicone and is not paintable. If the finished joint must be painted, choose the sealant technology around that requirement. HP4 is a hybrid polymer and comes in a variety of colors and can be painted.

Know the finish before you choose

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Professional Silicone for Everyday Interior Sealing

HP3 is built around the waterproof sealing work contractors encounter across common interior construction and remodeling projects.

100% Silicone

A dedicated silicone solution for flexible, waterproof sealing.

Waterproof Performance

Built for moisture-prone joints in kitchens, baths, fixtures, and other wet-area details.

Mold & Mildew Resistant

Designed for areas where moisture is part of the environment.

Delivered Direct

Order professional product for delivery to your jobsite or office.

FAQ

Typical Questions About Interior Sealants From Contractors Like You.

What makes silicone a good choice for interior sealing?

100% silicone is a strong choice when the joint needs durable flexibility and waterproof performance in moisture-prone areas.

Which Origin product should I use in kitchens and baths?

HP3 is the recommended Origin Pro product for kitchen and bath sealing applications where a durable waterproof silicone seal is required.

Is HP3 paintable?

No. HP3 is a 100% silicone sealant and is not paintable.

Can HP3 also be used outdoors?

Yes. HP3 is used for appropriate interior and exterior silicone sealing applications. Always match the product to the substrate and project requirements.

Choose the Right Interior Sealant With Confidence.

Start with the type of joint, then move directly to the product, application guidance, and technical information you need.

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KITCHEN & BATH

WINDOWS & DOORS

TECHNICAL DOCUMENTS

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