This ready-mixed, urethane-polymer filler uses the advanced technology of UV (Ultra-Violet) light to cure in an instant! This highly versatile material will adhere to most surfaces, including plastics, glass & metal. Apply a thin layer of IncredaFILL™ to any surface, then use the portable UV torch and watch it set rock hard! This 100% solid material was specially formulated using the latest micro-particle technology. Once cured, UV & water-resistant, non-shrinking & non-cracking filler can be sanded then finished with any paint or varnish.


Resistant to Moisture

Instant Curing

Easy Sanding (wet or dry)

Non- Shrinking


Product Features

"Don’t waste valuable time waiting for filler to dry…Use IncredaFILL™ and get the job done FAST."

Single Part System

No measuring, no waste, no mess! Ready-mixed, urethane filler that works straight out of the tub.

Instant Cure Technology

IncredaFILL™ uses the advanced technology of Ultra Violet (UV) light to cure rock hard in an instant.

Multi-Surface Advantage

IncredaFILL™ can be used on a variety of surfaces including; Plastic, Timber, Plaster, Plaster Board, Fibreglass, Alloy, Plywood, Metal, Tiles & Ceramics.

Superior Performance

Uses include: Filling, Smoothing, Repairing, Fairing, Skim-Coating, Filleting & Strengthening.

Special Feature - SPOT GLOW™

Make filling easier by seeing where the product has been applied with the unique identifier we call SPOT GLOW™ that glows bright when highlighted with Ultra Violet light.

Watch Video

Best Practices

Application Tips

Ensure surfaces are clean, dry and free of loose material.

Using a flexible spatula, press the filler paste firmly into the surface.

Apply thin layers and build up to ensure the product is cured properly.

Cure hard using a 395-405nm LED UV light source.


1. Apply
Using a flexible applicator or a gloved finger, apply the filler paste in thin layers.

2. Cure
To set hard, cure filled area for 5 – 10 seconds using 395-405nm Ultra-Violet (UV) light source.

3. Sand
Sand smooth by stepping from course to fine grades of wet or dry sandpaper.

4. Finish
For best results, use quality paints. Finish with a clear coat for ultimate protection and durability.

Step by Step Video Guide

The Ultimate Starter Kit

1. IncredaFILL™ Refill 
This ready-mixed, urethane polymer filler uses the advanced technology of UV light to cure in an instant! It is packed in a PET UV safe black screw-top container, it also has a protective internal seal as double protection to prevent accidental opening in daylight. Ensure to store in a dark, cool, dry place away from direct sunlight. Wipe surfaces and clean equipment with RESINAWAY™ or IPA.

2. UV LED 395nm Torch + 18650 Battery
This ultimate LED UV 395nm torch from UltraFire has a black aluminium alloy body, optical zooming lens for precision focusing & spot curing, powerful LEDs (3.7V-8.4V) powered by a 18650 rechargeable battery (included). An impressive waterproof rating of IPX4. The compact size (12.3cm X 2.8cm), small enough to carry in a pocket.

3. Smart Recharger
The powerful 18650 USB smart recharger gives the UV LED Torch the power it needs to cure IncredaFILL™ fast! This long-lasting rechargeable battery delivers an impressive 3.7 Volts. Recharge time is ultra-fast, and the recharger has smart sensor technology so the battery won’t suffer from overcharging.

4. UV Safety Glasses
It is important to always protect your eyes from UV light when curing IncredaFILL™. These high clarity yellow lens safety glasses will allow you to easily see without any damage to your eyes. Remember to always wear gloves when handling this product., if skin contact does occur, simply wipe off and wash will soapy water. Please download the SDS for more information.

5. What’s in the Box?
The IncredaFILL™ Ultimate Starter kit includes everything you need. The individual containers can be purchased separately when more material is needed.

1 x 350 grams IncredaFILL™ filler paste
1 x 18650 Rechargeable Battery
1 x Pair Wrap UV400 Safety Glasses
1 x UV LED 395nm Torch
1 x USB Battery Smart Recharger
3 x Plastic Filler Applicators

Buy Now

Technical Specifications

Physical Properties

Product Code



Semi-Transparent Grey


70,000 cps (25c)


Negligible Characteristics

Shelf Life

36 months

UV Cure

395nm to 405nm

Cure Speed

5-10 Seconds


Store in a dark, cool, dry place away from direct sunlight.

Wash Up


Mechanical Properties

Product Code


Cross-Sectional Area (mm2)


Max Force (kN)


Tensile Strength (MPa)


Percentage Elongation at Break


Young’s Modulus (GPa)


Shore Hardness (Scale D)


Temp. Resistance (C)

-20 – 60

Max Load Applied (N)


Flexural Stress (MPa)


Max Flexural Strain (mm/mm)


Max Flexural Strain (mm/mm)


Method Code

ASTM D790-10

Safety Guidelines

When using this product, ALWAYS wear recommended PPE (Personal Protective Equipment). This includes gloves, UV safety glasses & certified dust masks when sanding.

After handling IncredaFILL™, ensure to thoroughly wash hands and any exposed skin before going outside into the sun. If any material is on your skin and it is exposed to UV light, burns may occur.

If skin contact does occur, wipe off with IPA (Isopropyl Alcohol) and wash thoroughly soapy water. For full safety procedures, please download the SDS for more information.

Cure the product in a well-ventilated area, ensure to use a certified mask if sensitive to the odour. Always protect your eyes from UV light by never looking directly at it.

Safety Tips

  • Keep out of reach of children & animals
  • Do not use in aquariums
  • Avoid contact with food or drink
  • Use in well-ventilated areas
  • Always wear gloves & UV protective glasses
  • Wear a dust mask when sanding
  • Avoid contact with skin – wash off immediately
  • This product will heat (50-70c) when curing
  • Coat with UV resistant paint or varnish if the cured product will be exposed to sunlight
  • Refer to SDS (safety data sheet) for detailed safety instructions