Etalon 5700GP Fiberglass Body Filler 1kg, Green

High-Strength Fiberglass Filler for Demanding Repairs

The Etalon 5700GP Fiberglass Body Filler is designed for repair jobs where a conventional fine filler does not provide enough filling or bridging capability.

Its polyester formulation is reinforced with short glass fibres, allowing the material to bridge:

• Cracks
• Small holes
• Deeper dents
• Surface cavities
• Damaged areas
• Rust-through areas after correct repair and preparation

This makes it particularly useful during yacht refits and repairs where a stronger initial filling layer is required before final surface finishing.

Designed for Marine, Automotive & Industrial Use

Etalon specifically lists the 5700GP for:

• Marine applications
• Automotive repairs
• Industrial repairs

For yacht and boat maintenance, it is particularly useful on properly prepared:

• Fiberglass / GRP
• Aluminium
• Steel
• Iron
• Zinc
• Galvanized metal surfaces

Its ability to work across several common marine substrates makes it a practical product for professional refit yards, maintenance teams and repair workshops.

Ideal for GRP & Fiberglass Repairs

Fiberglass and GRP are among the most common construction materials used in modern yachts and boats.

Damage such as small cracks, holes and deeper surface defects often requires a material with more strength and filling capability than a standard finishing putty.

The short glass fibres inside Etalon 5700GP reinforce the polyester filler and help bridge damaged areas, making it suitable for:

• Local GRP repairs
• Small fiberglass holes
• Cracked areas
• Hull cosmetic repairs
• Superstructure repairs
• Damaged panels
• Surface reconstruction before finishing

For structural fiberglass repairs, laminate damage or major hull repairs, the appropriate structural resin and fiberglass reinforcement system should be used first. The 5700GP is primarily a repair and filling compound, not a replacement for structural laminating.

Excellent Filling & Bridging Properties

One of the key advantages of Etalon 5700GP is its ability to fill more substantial defects.

The manufacturer highlights its unique filling properties, allowing it to be used for repairs involving deeper dents and damaged areas.

Unlike a fine finishing filler, the 5700GP is designed to create the initial shape and strength required in a repair.

This makes it an excellent first-stage filler before applying a finer finishing product where an exceptionally smooth paint-ready surface is required.

Short Glass Fibres for a Smoother Finish

Traditional fiberglass fillers can sometimes contain long fibres that make application and sanding difficult.

Etalon 5700GP uses short glass fibres, providing the reinforcement required for stronger repairs while creating a smoother surface.

Benefits include:

• Easier application
• Better shaping
• Improved bridging capability
• Smoother surface
• Easier preparation for the next filler or primer stage

This saves valuable preparation time during professional yacht refinishing work.

Suitable for Aluminium

Etalon confirms good adhesion of the 5700GP to properly prepared aluminium.

This makes it useful for yacht and marine repair applications involving:

• Aluminium panels
• Aluminium structures
• Brackets
• Covers
• Metal equipment housings
• Repair areas on aluminium components

The aluminium must be correctly cleaned, abraded and degreased before application.

Suitable for Steel & Galvanized Surfaces

The 5700GP also offers good adhesion to:

• Iron
• Steel
• Zinc
• Galvanized metal

This makes it useful for repairing appropriately prepared metal components found onboard.

All corrosion must be properly removed before application. Filler should never simply be applied over active rust.

Where corrosion has significantly weakened the underlying metal, the damaged metal must first be professionally repaired or replaced.

Multiple Thin Layers

Although the product provides excellent filling capability, the Etalon TDS recommends applying it in:

Several thin layers

This gives better control over the repair and allows the material to cure correctly.

Building the required shape progressively also makes final sanding easier and helps produce a more uniform repair.

Fast Professional Curing

The 5700GP is designed for efficient workshop use.

At approximately 20°C, Etalon specifies:

Pot Life: 4–5 minutes
Drying Time: 20–25 minutes

This means the repair can move quickly from application to sanding without long waiting periods.

Using infrared drying equipment can reduce the drying time further to approximately:

8–10 minutes

Actual curing time can vary according to temperature, layer thickness and environmental conditions.

Mixing Ratio

The Etalon Technical Data Sheet specifies:

2–3% hardener

The filler and compatible hardener should be mixed thoroughly until a completely uniform mixture is achieved.

Do not add excessive hardener in an attempt to accelerate curing, as incorrect ratios can affect:

• Cure quality
• Adhesion
• Sanding
• Final surface quality
• Long-term repair performance

Only mix the quantity that can be applied within the approximately 4–5 minute working time.

Dry Sanding P80–P120

Once fully cured, Etalon specifies:

Dry sanding only: P80–P120

This grit range allows the repaired area to be shaped and blended with the surrounding substrate.

After shaping the fiberglass filler, a finer finishing filler and/or appropriate primer may be used when a smoother surface is required before painting.

Why Choose Etalon 5700GP for Yacht Repairs?

Deeper surface defects require more than a conventional finishing putty.

The Etalon 5700GP combines:

• High filling capability
• Fiberglass reinforcement
• Good bridging properties
• Multi-substrate adhesion
• Fast drying
• Marine suitability

For yacht refit and boat repair professionals, it provides an efficient solution for creating a strong repair base before the final finishing stages.

It is especially valuable where GRP, aluminium and metal surfaces may all be encountered during the same refit project.

Key Benefits

• Professional 2K polyester fiberglass filler
• Reinforced with short glass fibres
• Excellent filling capability
• Excellent bridging properties
• Suitable for cracks
• Suitable for small holes
• Suitable for deeper dents
• Ideal for local damaged areas
• Good adhesion to GRP / fiberglass
• Good adhesion to aluminium
• Good adhesion to steel and iron
• Good adhesion to zinc / galvanized surfaces
• Suitable for marine applications
• Short fibres create a smoother surface
• Can be applied in several thin layers
• Fast 20–25 minute drying at 20°C
• 4–5 minute working time
• Compatible with IR drying
• Professional green formulation
• Convenient 1kg pack

Recommended Yacht & Marine Applications

Ideal for:

• Yacht refit
• Boat repair
• GRP repairs
• Fiberglass repairs
• Local hull repairs
• Superstructure repairs
• Cracks
• Small holes
• Deep dents
• Damaged panels
• Aluminium repairs
• Steel repairs
• Galvanized metal repairs
• Surface rebuilding
• Preparation before finishing filler
• Professional marine workshops

How to Use

1. Inspect the damaged area and ensure that the repair is suitable for a body filler application.
2. Remove paint, loose material, oxidation and rust from the repair area.
3. Clean and flatten the substrate as required.
4. Thoroughly degrease the surface.
5. Place the required amount of Etalon 5700GP onto a clean mixing board.
6. Add 2–3% compatible hardener.
7. Mix thoroughly until the colour and consistency are completely uniform.
8. Apply with a clean filler spreader.
9. For deeper repairs, build the required thickness in several controlled layers.
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 using P80–P120.
13. Apply an appropriate finishing filler where a finer surface is required.
14. Continue with the suitable primer and coating system.

Important Repair Note

The Etalon 5700GP can bridge small holes and damaged areas, but it should not be used to hide active corrosion or replace structurally weakened material.

For corroded metal:

• Remove all rust first.
• Assess whether the substrate still has sufficient structural integrity.
• Repair or replace severely damaged metal before filling.
• Apply the filler only onto a clean and stable substrate.

For significant GRP structural damage, complete the necessary fiberglass laminate repair before using filler for surface shaping and finishing.

Application Data

Application Temperature: From 10°C
Hardener Ratio: 2–3%
Pot Life: 4–5 minutes at 20°C
Standard Drying: 20–25 minutes at 20°C
IR Drying: Approx. 8–10 minutes
Application: Several thin layers
Sanding: Dry only
Recommended Sanding: P80–P120
Specific Weight: Approx. 1.60kg/L

Technical Specifications

Brand: Etalon
Product: 5700GP Fiberglass Body Filler
Product Code: ET5700GP-100
Product Type: Fiberglass Reinforced Body Filler
Technology: 2K Polyester
Reinforcement: Short Glass Fibres
Colour: Green
Primary Function: Filling, levelling & bridging damaged areas
Suitable Substrates: Iron, steel, aluminium, zinc and GRP
Marine Use: Yes
Application Temperature: From 10°C
Hardener Ratio: 2–3%
Specific Weight: Approx. 1.60kg/L
Pot Life: Approx. 4–5 minutes at 20°C
Drying Time: Approx. 20–25 minutes at 20°C
IR Drying: Approx. 8–10 minutes
Sanding: Dry P80–P120
Shelf Life: 12 months under specified storage conditions
Packaging: Tin
Net Weight: 1kg

Etalon 5700GP vs Fine Finishing Filler

The 5700GP Fiberglass Body Filler is primarily intended for:

• Deeper repairs
• Filling
• Bridging
• Building shape
• Strengthening small damaged areas

A fine finishing filler such as the Etalon 5300FP is more appropriate for:

• Pinholes
• Fine scratches
• Small final imperfections
• Final surface smoothing

For professional repairs, the 5700GP can therefore be used for the initial repair stage, followed by a finer filler where required before priming.

Storage & Safety

Etalon 5700GP is a professional 2K polyester chemical product.

For safe use:

• Wear suitable protective gloves.
• Wear eye protection.
• Work in a well-ventilated area.
• Avoid unnecessary skin contact.
• Use suitable respiratory protection when sanding.
• Avoid inhaling sanding dust.
• Keep the product and hardener away from heat and ignition sources.
• Keep the container securely closed when not in use.
• Store according to manufacturer instructions.
• Keep away from children.
• Dispose of remaining material according to applicable regulations.

Always consult the current Etalon Technical Data Sheet and Safety Data Sheet before professional application.