Origin Pro Sealants are built to meet or exceed the demands of professional installers – combining high adhesion, flexibility, movement capability, and fast cure times. All products are independently tested and manufactured to align with key industry standards, including;

• ASTM C-920 performance classifications
• Class 50 movement capability (HP1, HP2)
• Tack-free and full cure times suited to jobsite speed
• Low odor, neutral-cure or moisture-cure chemistries depending on use

HP1 – Neutral Cure 100% Silicone (Alkoxy), 2.8 oz

Best for:

• Kitchens, baths, showers, tubs, sinks, tile, vanities
• Backsplashes, laundry rooms, utility rooms
• Punch-list interior work, plumbing, HVAC
  (Engineered primarily for interior environments.)

Suitable surfaces:

• Ideal: Non-porous substrates (glass, metals, PVC, fiberglass, glazed tile)
• Also suitable:
• Many porous substrates when properly primed or prepared
• Exterior small joints on non-porous components (vinyl, aluminum, fiberglass)

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HP2 – Neutral Cure 100% Silicone (Alkoxy), 10.1 oz

Best for:

• Larger interior kitchen & bath applications
• Commercial interior installations
• Fixtures, tile, plumbing, tubs, showers
  (Engineered primarily for interior environments.)

Suitable surfaces:

• Ideal: Interior non-porous substrates
• Also suitable:
• Many porous substrates when properly primed or prepared
• Exterior small joints on non-porous surfaces (PVC, ABS, coated metals)

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HP3 – 100% Silicone (Acetoxy Cure) — Glazing Grade

Best for:

• Window glazing (glass-to-glass, glass-to-aluminum)
• Curtainwall glazing
• Storefront glazing systems
• Exterior perimeter joints on non-porous windows and doors
• Vinyl, PVC, fiberglass, aluminum, coated metals

Suitable surfaces:

• Non-porous substrates only

Not recommended for:

• Porous substrates (brick, block, stone, concrete, mortar, cement board)
• Acid-sensitive metals (copper, galvanized steel, zinc)
• Paintable applications

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HP4 – Hybrid Polymer (SMP/MS Polymer)

Best for:

• Exterior siding, windows, and doors
• Trim, fascia, corner boards, soffits
• Roofing, flashing, gutters
• High-movement exterior joints
• Color-matched exterior installations

Suitable surfaces:

• Porous and non-porous substrates
• Fiber cement, engineered wood, masonry, wood, composites, PVC, vinyl, metals

Additional features:

• Paintable in 1 hour (test first)
• Can be applied to damp or slightly wet surfaces (remove standing water)

Yes. HP1 through HP4 are manufactured to meet or exceed ASTM C-920 standards. Product-specific classifications are detailed in each products Technical Data Sheets (TDS).

HP1/HP2/HP3: ASTM C-920 Type S, Grade NS, Class 50

HP4: ASTM C-920 Type S, Grade NS, Class 50; tested per AAMA 800 Sec. 4 & 5 and ASTM C-1382 (EIFS) complies with AAMA 713-24.

Each HP4 cartridge includes a precision-engineered V-notch nozzle that ensures smooth, consistent bead delivery – ideal for multi-crew applications or detailed joint work.

Yes. Our HP4 Hybrid Polymer Sealant draws from a color library of more than 200 established standards – covering over 5,000 pre-matched options that coordinate with leading siding, window and trim brands.

• Soft Launch (2025): Core 4 (White, Black, Brown and Gray) plus Clear
• 2026 Expansion: Additional colors will be introduced based on contractor and field demand.
• Custom color development is available for qualified contractor accounts.

Yes. While not listed on the cartridge label, HP4 performs exceptionally well for gutter sealing applications.

Legacy products are backed by over 60 years of combined experience in sealant and construction materials innovation. Each formula is engineered for modern jobsite performance and rigorously tested to meet professional standards for adhesion, flexibility and durability.

Legacy Pro features an easy-to-use "Match My Color" database for HP4 Hybrid Polymer Sealant.

Legacy Pro is more than a name – it's a tribute to a family heritage in the professional sealant industry. The Longo family's connection this category dates back to 1966, when Ohio Sealants, Inc. (OSI®)was founded in Wickliffe, Ohio. Decades later, Pete and Mark Longo reunited with the industry to launch Legacy Sealants – a new platform designed for today's contractor, blending proven performance with modern color-matching technology and direct-to-jobsite delivery.