Koch-Chemie Gelcoat Heavy Cut "Gh8.01" Heavy-Cut Compound for Gelcoat and Boat Paint (Marine Line) 3000ml

Heavy-cut compound for gelcoat and boat paint Koch-Chemie Gelcoat Heavy Cut "Gh8.01"

Koch-Chemie Gelcoat Heavy Cut "Gh8.01" is what you reach for on badly weathered gelcoat and boat paint. This heavy cut pulls out deep scratches, chalky oxidation and scuff marks — the kind fenders leave behind — and lays down serious gloss in the very first pass, even on dark surfaces. It's silicone-oil-free, so you can keep working it for ages without it burning in, and it stays low on dust and sling. Easy to work, it runs on both rotary and dual-action machines.

• Heavy cutting power: Reliably takes out deep scratches and heavy weathering.

• Instant gloss: Lays down a glossy finish in the first pass, even on dark colours.

• Easy to work: Spreads with no fuss, runs low on dust and is free of silicone oils.

Real fix for badly weathered surfaces

Gelcoat Heavy Cut "Gh8.01" was built for what marine work throws at you. With its heavy cut it clears out deep scratches, chalky oxidation and scuff marks left by the weather or by mechanical knocks. It's a cracking first step in a multi-stage polish, getting the surface ready for the finer cuts that follow.

Spot-on results on dark gelcoat and paint

Dark gelcoat and paint are always the tricky ones — they show every hologram and polish mark. Gelcoat Heavy Cut "Gh8.01" handles them without breaking a sweat. Right on the first pass you get an even, deep gloss that brings the original colour back to life. When you want to refine it further, follow up with a finer polish like Gelcoat Fine Cut "Gf6.01" or Gelcoat Micro Cut "Gm3.01".

Easy to handle, results that look pro

You can run Gelcoat Heavy Cut "Gh8.01" on both rotary and dual-action machines. For best results, drop five pea-sized blobs onto a suitable pad (e.g. Heavy Cut Pad, Lambswool Pad short or Twisted Wool Pad) and spread it out evenly in a crosshatch at low speed first. Then work it out with a rotary at no more than 1000 rpm, or a dual-action on its top setting. Polish residue wipes off easily with a microfibre cloth. For lasting protection and a proper seal afterwards, reach for something like Gelcoat Finish "Gp1.01", Marine Protective Sealant or Ceramic Boat Hull.