DiamondFinish Clear Coat DTM High Gloss Clear - Moisture Cured

Our review of DiamondFinish Clear Coat finds it best suited for hobbyists and automotive enthusiasts who need a durable, high gloss clear that can be applied over existing coatings or directly to bare metal. The single biggest reason to consider this product is its moisture cured urethane chemistry, which produces a hard, water clear finish with over 60% solids and low VOCs while eliminating the need for a separate hardener. Applicators who want a brushable, sprayable clear that resists chemicals and heat will appreciate its flexibility and ease of use.

Key Features

• Direct-to-metal capable: Can be applied directly to painted surfaces or bare metal with minimal surface prep, saving time on small projects.
• High solids, low VOC: Over 60% solids provide a thicker film and better gloss retention while remaining compliant with low VOC preferences.
• No hardener required: Unlike conventional two-part systems, it cures without mixing a separate activator; just stir and apply.
• Chemical and corrosion resistance: Designed to withstand fuels, solvents, battery acid and many harsh chemicals, making it suitable for exposed parts.
• Heat stable: Will not yellow up to 300 F, allowing use on engine components and other high temperature automotive areas.
• Multiple application methods: Brush, roller or conventional spray can be used and the formula is claimed to lay down without brush marks.

Who It's For

DiamondFinish Clear is aimed at people restoring or customizing vehicles, building fishing lures or coating metal parts where a tough, glossy, and chemically resistant finish is required. Its ability to cure without added hardener and to be applied over a variety of substrates makes it convenient for small shops and DIYers who need professional-looking results without complex mixing.

Those who need instant heavy-duty industrial coatings with rapid tack-free times or who expect guaranteed lifetime resistance in every environment should research alternatives; some users report varied cure times and occasional cracking in very long-term outdoor exposure. For large-scale production lines requiring specified two-part pot life and cure schedules, a conventional two-component polyurethane may be preferable.

Pros & Cons

Pros

• Excellent toughness and hardness once cured, offering durable gloss and impact resistance.
• Good chemical resistance to fuels, solvents, brake fluid and even strong acids listed by the manufacturer.
• Versatile application over paint, single-part and two-part systems and non-ferrous metals.
• Convenient single-component use with low VOC and no separate hardener to mix.

Cons

• Customer feedback shows variable drying and cure times; some users report it can take weeks to fully cure in cool conditions.
• A few reports indicate potential cracking after months of exposure in some applications, so long-term outdoor performance may vary by use case.

Specifications

Product Type	Moisture cured urethane clear coat
Solids	Over 60%
VOC	Low VOC formulation
Application Methods	Brush, roller, conventional spray
Curing Range	50 to 86 F without heat or UV
Heat Resistance	Stable up to 300 F without yellowing
Substrates	Painted surfaces, DTM, non-ferrous metals

Our Verdict

DiamondFinish Clear is a practical choice for hobbyists and small shops that need a tough, glossy clear without the complexity of two-part systems. Its chemical and heat resistance and ability to go direct to metal make it good value for projects like custom automotive parts and painted lures, provided users allow adequate cure time and follow surface prep guidance for long-term durability.

Frequently Asked Questions

Can DiamondFinish be brushed on without leaving brush marks?
Yes, the formula is designed to lay down smoothly and can be applied by brush without noticeable brush marks when applied correctly.

Does this product require a separate hardener?
No, it is a moisture cured urethane that cures without adding a hardener; you stir and apply.

Is it safe for engine parts that run hot?
Yes, it remains stable and resists yellowing up to about 300 F and is suitable for many engine and high temperature applications.