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Review side-by-side product details, technical notes, and practical differences.

Product comparison

HP3 100% Silicone vs GE Advanced Silicone 2

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

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HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

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Compared with

GE® Advanced Silicone 2 Window & Door Sealant

Core Performance & Application Attributes

Sealant Technology

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

100% Acetoxy-Cure Silicone

GE® Advanced Silicone 2 Window & Door Sealant

Neutral-Cure Silicone Sealant
Product Class & Movement (ASTM C920)

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Meets the intent of ASTM C920 for non-porous exterior glazing applications

GE® Advanced Silicone 2 Window & Door Sealant

ASTM C920 – Class 35 (±35% joint movement)
Skin Formation / Tack-Free Performance

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Skin 10–15 minutes / Tack-Free approximately 20–30 minutes

GE® Advanced Silicone 2 Window & Door Sealant

Work life approximately 5–10 minutes / Tack-Free approximately 30 minutes
Primary Application Focus

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Exterior glazing and exposed joint sealing

GE® Advanced Silicone 2 Window & Door Sealant

Window and door weatherproofing applications
Distribution

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Online ordering. Case-based contractor pricing. Delivered direct to jobsite or office.

GE® Advanced Silicone 2 Window & Door Sealant

Retail and building material supply distribution.

Comparative Overview

Both HP3 and GE Advanced Silicone 2 are silicone sealants designed for exterior sealing applications around windows, doors, and other non-porous construction substrates.

Attribute HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure) GE® Advanced Silicone 2 Window & Door Sealant
100% Silicone Sealant
✓
✓
Acetoxy-Cure Silicone
✓
✕
Neutral-Cure Silicone
✕
✓
ASTM C920 Class 35
✕
✓
Primary Application Focus – Exterior Glazing
✓
✕
Fast Skin Formation
✓
✕
Rain-Ready Performance
✓
✓
Direct-to-Contractor Platform
✓
✕

100% Silicone Sealant

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓

GE® Advanced Silicone 2 Window & Door Sealant

✓

Acetoxy-Cure Silicone

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓

GE® Advanced Silicone 2 Window & Door Sealant

✕

Neutral-Cure Silicone

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✕

GE® Advanced Silicone 2 Window & Door Sealant

✓

ASTM C920 Class 35

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✕

GE® Advanced Silicone 2 Window & Door Sealant

✓

Primary Application Focus – Exterior Glazing

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓

GE® Advanced Silicone 2 Window & Door Sealant

✕

Fast Skin Formation

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓

GE® Advanced Silicone 2 Window & Door Sealant

✕

Rain-Ready Performance

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓

GE® Advanced Silicone 2 Window & Door Sealant

✓

Direct-to-Contractor Platform

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓

GE® Advanced Silicone 2 Window & Door Sealant

✕

Differences You’ll Notice

Key differences between HP3 and GE Advanced Silicone 2 include silicone cure chemistry (acetoxy vs neutral cure), movement classification, skin timing, and supply structure. HP3 is optimized for exterior glazing and exposed joint sealing, while GE Advanced Silicone 2 is commonly used for window and door weatherproofing applications.

Ready to Make the Switch?

Professional-grade 100% silicone. Exterior glazing performance. Delivered direct.

View HP3 100% Silicone Details

The product comparison data provided is based on technical specifications published by the original manufacturers at the time of review. All references are for functional and category comparison only and do not imply product equivalence, approval, certification, or endorsement. Users should consult technical documentation and conduct their own performance evaluation to determine fitness for use in specific applications. Legacy Sealants, Inc. assumes no liability for third-party performance claims or changes in manufacturer formulations.