Dicor RP-TPR-Q TPO Roof Primer - Adhesion Promoter for Silicone

In this review the Dicor RP-TPR-Q TPO Roof Primer is evaluated as a prep solution for TPO membranes before applying Dicor silicone roof coating. The bottom line: it is a focused product for contractors and DIYers who need a fast, reliable adhesion promoter that helps the silicone coating bond to new or aged TPO. The primer's quick-drying solvent carrier, blue pigment for visible coverage, and stated coverage of about 225 sq. ft. per quart make it a practical choice when a same-day primer plus silicone coating workflow is required for dependable adhesion.

Key Features

• Enhanced adhesion: Formulated to create a strong bond between Dicor silicone coating and TPO membranes to reduce delamination risk.
• Long-lasting protection: Designed to extend the life of TPO roof membranes when used with the companion silicone coating.
• Labor-saving formula: Part of a 2-part system that shortens project time and can lower labor needs by more than 25% compared to similar products.
• Quick-drying formulation: Fast-evaporating solvent lets you complete primer application and follow-up coating in a single day.
• Safe and easy application: Brush or roller application covers roughly 225 sq. ft. per quart and contains no harmful ingredients for safer handling.

Who It's For

The primer is best for RV owners, roofing contractors, and maintenance crews working on TPO membranes who plan to apply Dicor RP-SELRC-1 silicone coating the same day. It suits projects where visible primer coverage matters thanks to the blue pigment and where reducing labor time is a priority.

It is not intended as a stand-alone roof coating, so homeowners seeking a one-product waterproof membrane replacement should look for full roof coatings rather than this adhesion promoter. Also, projects that cannot complete primer and coating in one day may see reduced effectiveness.

Pros & Cons

Pros

• Enhances bonding between silicone coating and TPO for improved adhesion.
• Quick-drying solvent allows same-day coating, speeding up project timelines.
• Blue pigment provides a clear visual guide for even application.
• Easy brush or roller application with a safe formulation and predictable coverage.

Cons

• Must be used with the compatible silicone coating and completed in one day for best results.
• Some users report mixed long-term durability with coatings on other substrates, so performance depends on correct prep and application.

Specifications

Our Verdict

The Dicor RP-TPR-Q primer is a practical adhesion promoter for anyone preparing TPO membranes for Dicor silicone coating. It delivers visible coverage, a fast-drying formula, and labor savings when used correctly in a same-day application. For those who need a reliable prep step to improve bond strength and speed up installation, it represents good value when paired with the recommended silicone coating.

Frequently Asked Questions

How much area does one quart cover?
One quart covers about 225 sq. ft. when applied with a brush or roller.

Can the primer be used alone as a roof coating?
No, it is an adhesion promoter and must be followed by the compatible silicone roof coating for protection.

Is the primer safe to apply?
The formula is described as containing no harmful ingredients and is intended for safe application with standard precautions and ventilation.