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UltraCAST Clear Casting Epoxy Resin
UltraCAST Clear Casting Epoxy Resin
UltraCAST Clear Casting Epoxy Resin
UltraCAST Clear Casting Epoxy Resin
UltraCAST Clear Casting Epoxy Resin
UltraCAST Clear Casting Epoxy Resin

UltraCAST Clear Casting Epoxy Resin

Regular price $0.00 $109.00 Sale

UltraCast xt is an ambient temperature curing, optically clear, nonylphenol-free, solvent-free epoxy coating/casting resin with excellent UV resistance and surface heat resistance up to 90 - 95°C. UltraCast is ASTM certified (D-4236).

UltraCast xt resin produces a high gloss, rigid and tough coating with good impact and abrasion resistance. The excellent optical clarity and viscosity makes it ideal for the following applications:

  • Sealing and coating of artwork/paintings made with acrylic paint, oil paint & watercolour paints
  • Sculptures and mould castings (up to 1000cc in volume)
  • Tabletops, bar counters and kitchen worktops
  • Penny floor and pigmented epoxy floor applications

Please be aware that if tints are used with UltraCastxt there is a chance colours could bleed into one another if poured next to each other, as the formula has a longer working time and is thinner than totalCAST art resin.

This resin can be readily pigmented by the addition of any resin pigments sold in our online store. Adding a drop of resi-BLAST will aid in creating cells and lacing effects. 


Please note:

This resin system needs 7-10 days to reach maximum cured properties and temperature resistance. The addition of pigments (inks, powders and pastes) as well as other resin additives (resi-BLAST, silicone, lubricants, alcohol or solvents) will lower its temperature resistance, this is because pigment substances themselves have a very low temperature threshold. 

The higher the addition rate of pigments & additives which are added or mixed into UltraCastxt, the more the thermal withstand of the cured mass is lowered and compromised. In this case, we recommend a final clear topcoat of UltraCastxt is applied on top of the pigmented layer to bolster its resistance against hot objects placed on it.

The addition of alcohol inks in particular can cause problematic surface finish due to its effect of lowering the viscosity (diluting the resin and impacting its density). It can result in cloudiness, dimples and other surface blemishes. The alcohol content in these inks will nullify the resin’s non-flammable properties. When alcohol inks or any other solvent is added, special care should be taken when heating the surface with an open flame blowtorch or butane gun.

Due its long open time, UltraCastxt is susceptible to Amine Blush and Polymer Bloom under the following usage conditions : high humidity, low ambient temperature (15°C or below), draughty or windy conditions including air-conditioning. To avoid this effect from occurring we recommend the resin component (Part A) is pre-warmed before mixing with the Hardener. We also request that the working area is kept as consistent as possible with regard to temperature and humidity while the resin is curing.



The mixing ratio must be accurately followed to achieve perfect results. It is not possible to change the ratio which would result in the resin not drying properly and lower mechanical properties.

The mixed components should be thoroughly stirred for 3-4 minutes to ensure an even consistency. Epoxy systems tend to heat up faster in a pot than as a thin film, only mix the amount needed for use within the pot life of the product.



The product can be applied by pouring from the mixing vessel or by brush or roller. This resin can be readily pigmented by the addition of any resin pigments sold in our online store. Adding a drop of resi-BLAST will aid in creating cells and lacing effects.




Difference between totalCAST, UltraCAST and ArtResin:

For more information on the differences between the resins, please visit our FAQ page (scroll down to the resin section).



Technical Data Sheet





Safety and Disclaimer:

This resin is not intended for use by children. Resin Play will not be liable for any damages or allergy reactions caused from using this product. Users are advised to follow product usage instructions and wear personal protective equipment. For more information you may refer to this guide.


Health & Safety:

Although our resins are formulated with the most modern and safest epoxy chemicals available, all epoxy resins are chemicals and should be managed and handled with proactive safety hygiene and responsible care.

  • Always wear nitrile gloves (or use a specialist resin barrier cream)
  • Wear a respirator when sanding partially-cured resin
  • It is advisable to work in a well ventilated room
  • We advise the use of safety goggles
  • Avoid skin contact (if resin gets on skin wash with plenty of soap & water)
  • DO NOT eat, drink or smoke while working
  • In case of eye contamination wash with plenty of water for 15 minutes and consult medical advice immediately

Adding inks/paints/mica powder/glitter to epoxy resin will change its properties and may reduce its non-toxicity. If you use alcohol inks DO NOT use a flame to remove bubbles, as alcohol is flammable.