Finish 1 Paint Additive
Finish 1 Paint Additives: Built Into a Complete Refinishing System
When a refinish job demands consistent, repeatable results, the additives in your paint system matter just as much as the topcoat itself. Finish 1 — a value-focused automotive refinish brand under the Martin Senour umbrella and distributed through the Sherwin-Williams automotive network — has built its reputation around a cohesive, easy-to-use system where every component, including its paint additives, is engineered to work in harmony with the rest of the line.
A System Designed Around Simplicity and Compliance
One of the defining characteristics of the Finish 1 lineup is its commitment to an accessible workflow. The majority of products in the system feature a standardized 4:1 mix ratio, which means painters spend less time doing math and more time laying down clean coats. This consistency carries directly into the additive category — hardeners and reducers are formulated to integrate seamlessly with Finish 1 clearcoats, sealers, and single-stage colors without requiring complex adjustments or guesswork.
Finish 1 additives are also engineered with VOC compliance in mind. As emissions regulations have tightened across the country, the brand has developed products that meet modern standards without sacrificing application performance — an important consideration for shops operating in regulated markets.
What Paint Additives Does Finish 1 Offer?
Within the broader Finish 1 ecosystem, paint additives such as hardeners and reducers serve as the workhorses that control cure times, flow characteristics, and film build. These products are specifically matched to Finish 1 clearcoats like the FC720 Ultimate Overall Clearcoat — a high-solids urethane designed for overall repairs — and the FC750 Satin Clearcoat, a high-solids urethane suited for both air-dry and force-dry environments. Pairing the right additive to these systems directly affects gloss retention, adhesion, and the durability of the finished repair.
Finish 1 also offers solvents like the FT210 Acetone, a fast-evaporating multi-purpose solvent useful for reducing and cleaning, and the FT200 Surface Cleaner, designed to remove wax, oil, grease, and silicone contaminants prior to painting. Together, these products form the prep-and-additive backbone of a professional refinishing workflow.
Who Are Finish 1 Paint Additives For?
Finish 1 additives are a smart choice for a broad range of users. The brand was designed from the ground up to serve smaller collision repair shops, over-the-counter sales, and enthusiast painters who need reliable performance without the premium price tag of top-tier refinish systems. The straightforward system design means a technician can pick up Finish 1 products with minimal training and still achieve professional-grade results — making it especially appealing for shops that handle mixed volumes of repair work.
Whether you are spraying a full panel or blending a spot repair, having the correct hardener or reducer dialed in is non-negotiable. Finish 1's additive lineup removes the complexity from that equation, giving painters the confidence to focus on technique rather than troubleshooting chemistry.
Explore the full Finish 1 brand catalog or browse all paint additives to find the right products for your next refinishing project.