Etalon Etaglass 5300GP Fiberglass Putty, 1kg

Fiberglass-Reinforced Filler for Stronger Repairs

The Etalon Etaglass 5300GP is designed for repairs that require greater filling and bridging performance than a standard universal or finishing filler.

Its 2K polyester formulation is reinforced with glass fibres, providing additional strength and allowing the filler to bridge small damaged areas.

It is particularly suitable for:

• Cracks
• Small holes
• Deep dents
• Surface cavities
• Damaged areas
• Uneven repair sections
• Surface rebuilding
• Areas requiring stronger initial filling

This makes Etaglass especially useful during yacht refit, boat repair and professional refinishing work.

Short Glass Fibres for Filling & Bridging

Etalon Etaglass uses short glass fibres within the polyester filler.

These fibres help create a repair layer with:

• Excellent filling properties
• Good bridging capability
• Increased reinforcement
• Better stability in deeper repairs
• Easier shaping
• A smoother finish than many coarse long-fibre fillers

The smoother surface can also reduce the amount of work required before applying a finer finishing filler.

Ideal for Fiberglass & GRP Repairs

Fiberglass / GRP is one of the most widely used materials in yacht and boat construction.

The Etalon Etaglass 5300GP offers good adhesion to correctly prepared GRP and is suitable for local repair work such as:

• Fiberglass surface damage
• Small GRP cracks
• Small holes
• Local hull imperfections
• Superstructure repairs
• GRP panels
• Fiberglass components
• Surface rebuilding after repairs

For structural fiberglass damage, delamination or major laminate failure, the correct fiberglass cloth/mat and resin system must be used first.

Etaglass is primarily a filling and surface-repair product and should not replace a structural laminate repair.

Excellent Filling Properties

A fine finishing putty is designed primarily to remove small imperfections.

Etaglass 5300GP has a different purpose.

Its formulation allows it to fill more substantial defects and rebuild damaged surface areas before the final finishing stage.

It is particularly useful for:

• Deep irregularities
• Dents
• Cavities
• Small openings
• Damaged edges
• Surface reconstruction

After shaping and sanding, a fine finishing filler may be applied when an exceptionally smooth paint-ready surface is required.

Suitable for Aluminium

Etalon specifies good adhesion to properly prepared aluminium.

This makes the product useful for yacht and marine repair work involving:

• Aluminium panels
• Aluminium yacht components
• Brackets
• Covers
• Equipment housings
• Local aluminium repairs
• Marine metal components

Aluminium should always be correctly cleaned, abraded and degreased before filler application.

Suitable for Steel & Iron

Etaglass is also suitable for correctly prepared:

• Iron
• Steel
• Ferrous metal

Before application, completely remove:

• Rust
• Oxidation
• Loose coatings
• Grease
• Oil
• Dirt and contamination

Do not simply cover active corrosion with filler.

If corrosion has significantly weakened the metal, the damaged section must first be repaired or replaced.

Suitable for Zinc Surfaces

Etalon also lists good adhesion to zinc.

This adds further versatility for professional workshops and yacht refit projects where several types of metal may be encountered within the same job.

Correct substrate preparation remains essential.

Designed for Marine Applications

The Etaglass technical information specifically includes marine use among its intended applications.

This makes it relevant for professional yacht and boat maintenance, including:

• Yacht refit
• Boat repair
• GRP repair
• Fiberglass repair
• Aluminium repair
• Steel repair
• Hull cosmetic repairs
• Superstructure repairs
• Marine component restoration

Its ability to work on multiple substrates makes it particularly convenient in a refit environment.

2K Polyester Technology

Etalon Etaglass is a two-component polyester filler.

Before application, the required quantity of filler must be mixed with the appropriate compatible hardener.

Hardener Ratio

2–3% hardener

Correct dosing is important for predictable curing and repair performance.

Do not add excessive hardener simply to speed up drying, as an incorrect mixture can negatively affect the final result.

Fast 4–5 Minute Working Time

At approximately 20°C, Etalon specifies a pot life of:

4–5 minutes

This means only the amount that can be applied within the available working time should be mixed.

For larger repairs, prepare several smaller batches instead of one unnecessarily large mixture.

Fast Drying

At approximately 20°C, the standard drying time is:

20–25 minutes

Using suitable infrared drying equipment, drying may be reduced to approximately:

8–10 minutes

Actual curing times depend on:

• Ambient temperature
• Layer thickness
• Hardener percentage
• Ventilation
• Workshop conditions

Apply in Several Controlled Layers

For deeper repairs, Etalon allows Etaglass to be applied in several thin or controlled layers.

Building the repair progressively helps improve:

• Shape control
• Curing
• Application accuracy
• Sanding
• Final surface quality

Avoid using excessive quantities where structural repair of the substrate is actually required.

Dry Sanding P80–P120

Once properly cured, Etalon specifies:

Dry sanding only: P80–P120

This grit range allows the reinforced filler to be shaped and blended with the surrounding surface.

After the initial shaping stage, a finer filler can be used where required before primer.

Ideal First Stage Before Fine Finishing

Etaglass is best considered a reinforced filling product, rather than a final micro-finishing putty.

A professional repair sequence may therefore be:

Structural Repair if Required → Etalon Etaglass → Fine Finishing Filler → Primer → Paint System

This provides strength and filling where needed, followed by a smoother final surface before painting.

Why Choose Etalon Etaglass 5300GP?

Deeper damage often requires a filler with more reinforcement than a conventional polyester finishing putty.

Etalon Etaglass combines:

• Fiberglass reinforcement
• High filling capability
• Strong bridging characteristics
• Fast drying
• Multiple-substrate adhesion
• Marine application suitability
• Short fibres for a smoother surface

For yacht owners, professional painters, boatyards and refit technicians, it provides a practical solution for stronger local repairs before the final finishing process.

Key Benefits

• Professional 2K polyester filler
• Reinforced with glass fibres
• Short-fibre formulation
• Excellent filling performance
• Good bridging capability
• Suitable for cracks
• Suitable for small holes
• Suitable for deeper dents
• Ideal for damaged surface areas
• Good adhesion to fiberglass / GRP
• Good adhesion to aluminium
• Good adhesion to steel
• Good adhesion to iron
• Suitable for zinc
• Designed for marine applications
• Leaves a smoother surface due to short fibres
• Hardener ratio 2–3%
• Pot life approx. 4–5 minutes
• Drying approx. 20–25 minutes at 20°C
• Dry sanding P80–P120
• Green colour
• Compact professional 1kg pack

Recommended Yacht & Marine Applications

Ideal for:

• Yacht refit
• Boat repairs
• GRP repairs
• Fiberglass repairs
• Local hull repairs
• Superstructure repairs
• Cracks
• Small holes
• Deep dents
• Surface cavities
• Surface rebuilding
• Aluminium repairs
• Steel repairs
• Marine component repairs
• Preparation before finishing filler
• Professional marine workshops

How to Use

1. Inspect the damaged area and determine whether filler is suitable for the repair.
2. Remove loose paint, corrosion and unstable material.
3. Sand the substrate appropriately.
4. Thoroughly clean and degrease the repair area.
5. Place only the required amount of Etaglass onto a clean mixing board.
6. Add approximately 2–3% compatible hardener.
7. Mix thoroughly until completely homogeneous.
8. Apply using a clean filler spreader.
9. Build deeper repairs in several controlled layers where required.
10. Work efficiently, as pot life is approximately 4–5 minutes at 20°C.
11. Allow approximately 20–25 minutes at 20°C for curing.
12. Dry sand with P80–P120.
13. Apply a fine finishing filler if a smoother final surface is required.
14. Continue with the appropriate primer and coating system.

Always follow the current Technical Data Sheet and the instructions of the complete coating system.

Important Repair Note

For Corroded Metal

Etaglass should not be used simply to cover active rust.

Before filling:

• Remove corrosion completely.
• Assess the remaining metal thickness and strength.
• Repair or replace seriously weakened metal.
• Apply filler only to stable and correctly prepared material.

For Fiberglass / GRP

If the damaged area has:

• Structural cracking
• Delamination
• Broken laminate
• Significant impact damage

complete the appropriate fiberglass laminate repair first.

Use Etaglass afterwards where appropriate for filling, reshaping and surface preparation.

Application Data

Minimum Application Temperature: Approx. 10°C
Hardener Ratio: 2–3%
Specific Weight: Approx. 1.60kg/L
Pot Life at 20°C: Approx. 4–5 minutes
Drying at 20°C: Approx. 20–25 minutes
IR Drying: Approx. 8–10 minutes
Application: Several controlled layers where required
Sanding Method: Dry only
Recommended Abrasive: P80–P120
Shelf Life: Approx. 12 months under specified storage conditions

Technical Specifications

Brand: Etalon
Range: Etaglass
Product: Fiberglass Putty
Product Code: ET5300GP-100
Product Type: Glass-Fibre Reinforced Body Filler
Technology: 2K Polyester
Reinforcement: Short Glass Fibres
Colour: Green
Primary Function: Filling, levelling & bridging repair areas
Suitable Substrates: Iron, steel, aluminium, zinc and GRP
Marine Application: Yes
Hardener Ratio: 2–3%
Specific Weight: Approx. 1.60kg/L
Pot Life: Approx. 4–5 minutes at 20°C
Drying: Approx. 20–25 minutes at 20°C
IR Drying: Approx. 8–10 minutes
Sanding: Dry P80–P120
Net Weight: 1kg

Professional Application Tips

For better results:

• Never apply directly over active rust.
• Clean and degrease the surface thoroughly.
• Mix only enough material for the short pot life.
• Measure the hardener carefully.
• Do not add excessive hardener.
• Avoid trapping air while mixing.
• Build deeper repairs gradually.
• Allow proper curing before sanding.
• Use dust extraction and suitable PPE while sanding.
• Follow with a fine filler where a premium paint finish is required.
• Inspect the repair carefully before applying primer.

Storage & Safety

Etalon Etaglass is a professional polyester chemical product.

For safe use:

• Wear suitable chemical-resistant gloves.
• Wear appropriate eye protection.
• Ensure good ventilation.
• Avoid breathing vapours.
• Use suitable respiratory protection during sanding.
• Avoid inhaling sanding dust.
• Keep the product and hardener away from heat, sparks and flames.
• Do not smoke during application.
• Keep the container tightly closed when not in use.
• Store according to the manufacturer’s recommendations.
• Keep away from children.
• Dispose of remaining material according to applicable regulations.

Always consult the relevant Safety Data Sheet before professional use.