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

Product comparison

HP3 100% Silicone vs DAP 100% Silicone WD

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Origin Pro

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

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DAP® 100% Silicone Rubber Window, Door & Siding

Compared with

DAP® 100% Silicone Rubber Window, Door & Siding

Core Performance & Application Attributes

Product Class & Movement (ASTM C920)

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

ASTM C920 Class 25; ±25% movement capability

DAP® 100% Silicone Rubber Window, Door & Siding

ASTM C920 Class 25; ±25% movement capability
Distribution

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Professional contractor-oriented supply with direct ordering

DAP® 100% Silicone Rubber Window, Door & Siding

Widely available retail format
Primary Application Focus

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

Exterior sealing applications including windows, doors, siding, and general construction joints

DAP® 100% Silicone Rubber Window, Door & Siding

Exterior sealing applications including windows, doors, siding, and general construction joints

Comparative Overview

Both products meet ASTM C920 Class 25 performance requirements and are suitable for exterior sealing applications.

Attribute HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure) DAP® 100% Silicone Rubber Window, Door & Siding
Neutral Cure Silicone
✓
Yes
✕
No
ASTM C920 Class 25
✓
Yes
✓
Yes
±25% Movement Capability
✓
Yes
✓
Yes
Low Odor Application
✓
Yes
✕
No
Smooth, Controlled Bead
✓
Yes
–
Moderate
No Tooling Required
✓
Yes
✕
No
Broad Substrate Compatibility
✓
Yes
–
Limited
Mold & Mildew Resistant
✓
Yes
✓
Yes
Exterior Weather Resistance
✓
Yes
✓
Yes
Professional-Grade Performance
✓
Yes
–
General Purpose

Neutral Cure Silicone

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

✕
No

ASTM C920 Class 25

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

✓
Yes

±25% Movement Capability

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

✓
Yes

Low Odor Application

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

✕
No

Smooth, Controlled Bead

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

–
Moderate

No Tooling Required

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

✕
No

Broad Substrate Compatibility

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

–
Limited

Mold & Mildew Resistant

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

✓
Yes

Exterior Weather Resistance

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

✓
Yes

Professional-Grade Performance

HP3 | 100% Silicone Exterior Sealant (Acetoxy Cure)

✓
Yes

DAP® 100% Silicone Rubber Window, Door & Siding

–
General Purpose

Differences You’ll Notice

Legacy Pro™ HP3 is engineered for professional contractor use, offering improved workability, cleaner application, and greater substrate compatibility. DAP® 100% Silicone provides dependable performance in a widely available retail format, with limitations typical of acetoxy cure silicones.

Ready to Make the Switch?

Legacy Pro™ HP3 is engineered for professional contractor use, offering improved workability, cleaner application, and greater substrate compatibility.

Beyond the Product Direct Online Ordering · Flexible Ordering Options · Pro Dashboard
View HP3 100% Silicone Details
Product Comparison Disclaimer

Product comparison information is based on publicly available technical data published by the respective manufacturers and available at the time of review. Comparisons are provided for general informational purposes only and do not imply product equivalence, specification approval, certification, or suitability for any particular application.

Product names, trademarks, packaging, and images are the property of their respective owners and are used solely for identification and comparative purposes. Legacy Sealants, Inc. and Origin Pro are not affiliated with, sponsored by, or endorsed by any referenced manufacturer.

Product formulations and specifications may change. Users should review current manufacturer technical literature and independently determine product suitability for their specific application.

All third-party trademarks are the property of their respective owners. Their use is solely for identification and comparative purposes and does not imply affiliation, sponsorship, or endorsement.