Glass and Marine Polish

Mirka Galaxy abrasives are designed for high-performance gelcoat sanding. They use a self-sharpening ceramic grain that stays sharp longer, giving you consistent results over large areas.

• Cuts efficiently on tough marine surfaces like gelcoat.
• Resists clogging, so you change discs less often.
• Leaves a uniform scratch pattern, which makes polishing faster.

If you want to save time on your buffing process and prepare the surface properly, Galaxy abrasives will help you remove oxidation and imperfections quickly. Using these ensures your polishing stage is smoother, so your boat reaches that high-gloss finish with less effort.

Abralon® abrasives are made for fine surface preparation, especially on curved or contoured areas of your boat’s hull and deck. The foam backing and flexible abrasive surface adapt to the shape of your boat without cutting unevenly.

• Conforms to complex shapes like rails and hull curves.
• Works wet or dry, reducing dust around sensitive marine fittings.
• Produces a smooth finish ready for polishing compounds.

If your goal is to achieve a flawless final gloss, Abralon® helps you get that perfectly even surface before you start buffing. It’s especially useful if you maintain your boat’s appearance regularly and want to avoid aggressive sanding every time.

Mirka® LEROS-S is a compact, lightweight electric sander that works well on large boat surfaces but still fits in confined areas like cabins or tight deck spaces.

• 9-inch flexible sanding head for better reach in narrow spots.
• Dual grip points reduce arm fatigue during long jobs.
• Works with Mirka’s dust-free system for cleaner working conditions.

If you want to speed up your sanding work without sacrificing control, LEROS-S gives you both reach and precision. You can comfortably sand your hull sides or deck panels for long periods while keeping the area cleaner for a faster overall job.

Lightweight Long File Boards are ideal for controlled hand sanding on larger hull panels. They keep your sanding strokes even, which is key before buffing.

• Allows accurate sanding on flat or gently curved areas.
• Works with various Mirka abrasives for a custom finish.

If you like a more hands-on approach for certain areas of your boat, Long File Boards let you fine-tune the surface before you switch to machine buffing, helping you maintain consistency across the hull.

Polarshine® Marine range is a line of water-based polishing compounds designed for gelcoat surfaces. It comes in Heavy Cut for removing heavy oxidation, Medium Cut for restoring shine, and Fine Antihologram for a final gloss.

• Heavy Cut removes deep oxidation and heavy marks quickly.
• Medium Cut brings back the shine after sanding.
• Fine Antihologram eliminates swirl marks for a mirror finish.
• Water-based formula avoids harmful solvents, making it safer to use onboard.

If you want your boat to not just look polished but also stay glossy for longer, Polarshine® helps you get professional results.

You can match the compound grade to your boat’s condition, making maintenance easier over the season.

Mirka offers the complete Marine Polishing Kit, which you can consider if you want everything needed for a full buffing and polishing process in one set.

It includes Galaxy abrasives, Polarshine® compounds for each polishing stage, twisted wool pads, microfiber cloths, and a storage bag.

• Saves time by giving you all the essential materials in one package.
• Ensures product compatibility for better surface results.

If you prefer not to source each tool separately, this kit streamlines your work. It lets you start buffing immediately with the right materials, helping you maintain your boat’s finish with less trial and error.

Start by making sure your boat’s surface is clean and free from any loose dirt, grime, or salt residue. If you begin buffing without cleaning, you risk scratching the surface or pushing dirt into the gelcoat.

Use fresh water to rinse the entire area you plan to buff. Pay attention to corners, fittings, and edges where salt and debris often collect, such as around cleats, rails, or hatches.

After rinsing, wash with a marine-safe soap to remove stubborn grease or stains. Rinse again and let the surface dry fully before moving to the next step.

If your boat has old wax layers or surface contaminants, use a surface cleaner to strip them away. This helps your polishing compound work directly on the gelcoat instead of over a barrier.

Mask off sensitive areas like rubber trims, decals, or areas you do not want the buffer to touch. This avoids accidental scuffing during the process.

Checklist before moving on:

• The surface is completely clean and dry.
• No visible dirt or salt spots.
• Sensitive areas are masked and protected.

Oxidation makes the gelcoat look chalky or faded. Removing it before buffing will help restore a smooth surface and bring back the color.

Inspect your boat in good lighting to see where oxidation is worst, such as on the sun-exposed sides or the top deck.

Use the right abrasive for your boat’s condition. For light oxidation, a fine abrasive pad may be enough. For heavier oxidation, use a coarser grit first, then move to a finer grit for a smooth finish.

Sand evenly and avoid staying in one spot for too long to prevent uneven surfaces. Keep your movements consistent and check your work often.

Checklist before moving on:

• Oxidation is fully removed from the surface.
• The surface feels smooth to the touch.
• No patches of dull or chalky finish remain.

Start by giving your boat’s gelcoat a close inspection. Look for cracks, deep scratches, blisters, or dull spots. These are signs that the gelcoat needs more than just buffing.

Run your hand over the surface. If you feel rough patches or see cloudy areas, note them down. These spots may require sanding before polishing.

Checking the gelcoat now saves you from wasting time later. If you start buffing without fixing damage, you could make the problem worse or leave the finish uneven.

Fiberglass gelcoat is durable but can still be damaged by the wrong abrasive. Begin with a medium grit to remove oxidation and surface imperfections. Then move to finer grits for a smooth finish before polishing.

Always test on a small area first. This helps you see how the gelcoat reacts and lets you adjust grit size before working on the entire boat.

Avoid skipping grit steps. Jumping from coarse to fine too quickly can leave hidden scratches that show up after polishing.

Abranet® SIC NS (silicon-carbide net abrasive) is made for hard surfaces like fiberglass gelcoat. Its silicon carbide grain cuts evenly and lasts longer, and the net design works with dust extraction to keep your work area clean.

• Fast cutting on tough gelcoat
• Long-lasting abrasive life
• Controls dust for a cleaner surface before polishing

If your fiberglass boat has heavy oxidation or chalky spots, this abrasive will help you remove it quickly and prepare the gelcoat for polishing. You will spend less time changing discs, and your board’s surface will be cleaner and smoother when you move to the buffing stage.

Mirlon Total® non-woven pads are flexible and easy to handle, designed for scuffing curves, rails, and other detailed parts of a fiberglass boat. The open web design resists clogging and gives a consistent scratch pattern.

• Conforms to shapes and edges
• Works wet or dry
• Produces a uniform surface ready for compounding

If you want a flawless finish on tight areas of your board, Mirlon Total® will help you prepare every curve and contour so the polishing compound works evenly across the whole surface.

Mirka® AROP-B 312 cordless random-orbital polisher

The AROP-B 312 is compact and cordless, with a 77 mm pad that reaches corners and small sections of your boat’s hull. The random-orbital motion keeps heat low and reduces swirl marks.

• Variable speed control
• Ideal for tight and curved fiberglass areas
• Cordless freedom for easy handling

If you work on detailed parts of your fiberglass board, this tool helps you buff without dragging cables and lets you achieve an even shine in places larger machines cannot reach.

Mirka® ARP-B 300 cordless rotary polisher

The ARP-B 300 is designed for fast cutting in small areas. Its rotary action removes tough marks or waterline oxidation quickly.

• Compact rotary design for spot work
• Brushless motor for consistent power
• Great for localized repair buffing

When your fiberglass boat has stubborn marks, this tool gives you the cutting power to fix them without working the whole surface again.

Mirka® DEOS compact electric orbital sanders

DEOS sanders are low-profile and precise, perfect for getting close to the surface and sanding with control. Multiple pad shapes fit different parts of your boat.

• Excellent for sanding edges and corners
• Works with dust extraction
• Delivers consistent sanding before polishing

If you want to prepare your fiberglass gelcoat with precision and avoid uneven spots, DEOS gives you the control needed for professional results.