Collinite Gel-Coat/Fiberglass Compounds

Fiberglass and gel-coat surfaces take a beating from UV exposure, salt spray, and constant moisture. Over time, that exposure leaves boats and RVs with chalky oxidation, black streaks, and a dull finish. Collinite has been formulating answers to those problems since 1936, and its marine line is built around carnauba-and-polymer chemistry made for harsh conditions. This page covers Collinite's gel-coat and fiberglass compounds specifically. For the manufacturer's broader story, visit the Collinite brand page, or browse the full Gel-Coat/Fiberglass Compounds category to compare options from other makers.

Cleaner-Wax Restoration in One Step

The centerpiece of Collinite's fiberglass care is No. 870 Liquid Fleetwax, a cleaner-wax. It is described as removing oxidation and black streaks while leaving a durable protective coat, in one step for fiberglass and gelcoat. The formula combines rare, pure carnauba waxes with advanced polymer technology. That makes it a practical choice when a hull or RV sidewall is lightly weathered and you want to clean and protect in a single pass instead of compounding, polishing, and waxing separately.

Collinite points out that 870 is a liquid cleaner wax, while 885 is a pure paste wax with no cleaners, so the two serve different stages of maintenance. The 870 is also used on gel coat, single-stage or lacquered paints, and exterior marine, automotive, RV, and aeronautical finishes. It is not recommended for coated or painted metals or dark clear coat paint, so check your surface before applying.

Matching the Product to the Surface

Collinite's own guidance separates restoration from protection. For heavily oxidized surfaces, the finish is restored first with a marine compound such as No. 631 Fleetcut Marine Compound, then sealed with a wax. Once the surface is clean and smooth, the last-step options include:

• No. 885 Fleetwax Paste: the company's longest-lasting marine wax, suited to well-maintained gelcoat that needs maximum durability.
• No. 925 Fiberglass Marine Wax: a liquid gel version of 885 with a smooth spread and machine-friendly application that can be applied in larger sections than a traditional paste wax.
• No. 870 Liquid Fleetwax: the one-step cleaner-wax for mild oxidation, staining, and routine seasonal upkeep.

This layered approach is useful to know when shopping. A cleaner-wax and a pure wax are not interchangeable, and applying a last-step wax over a contaminated surface wastes its durability.

Why Collinite Stands Out

Collinite's formulas favor longevity over easy-off convenience. The company says it prioritizes durability and chemical resistance over "easy-off" fillers. The brand is also tied to its home base: products are distributed in 65 countries, but every batch is still poured in Utica, New York. The company was founded in 1936 by Charles H. Collins, and its heavy-duty industrial roots explain why its marine products hold up in salt air and strong sun.

Application Tips

• Shake the product well and work on a surface that is cool to lukewarm, out of direct sun.
• Apply a thin coat to a small area, no more than about 2x2 feet at a time with an applicator pad, for the 870 cleaner-wax.
• For 925, use a few pea-size dots on a finishing pad with a dual-action polisher set between 4000 and 4800 OPM.
• Follow a cleaner-wax with a dedicated last-step wax if you want added protection through the season.

For boaters and RV owners who want a time-tested, American-made approach to fiberglass upkeep, Collinite's gel-coat and fiberglass products offer a proven workflow from restoration through final protection.