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How to use Epoxy Resin

September 8, 2017 / Murray Steward

How to use Resin Research Epoxy Resin.

What follows is the best working practice we have found so far for Resin Research Epoxy. (An instructional video is available)

The world’s best Epoxy Resin by far, with a high bio content and ease of use, Resin Research is the first choice for all marine users. Advanced chemical makeups, strong UV resistance (a first), tough, ultra clear, safe and clean, this is the choice of advanced marine engineers and laminators world-wide.

Best Practice for Laminating in Epoxy Resin.

Similar instructions apply to all marine craft. See the video on RNLI Rescue Board Production at Seabase.

Use Resin Research 2000CE Ultra or Kwik Kick Ultra for laminating. We recommend 2100F Hardener for the 2000CE ultra resin. Kwik Kick Epoxy has a different Hardener.  Use 2000CE Resin  for installing posts, stantions, boxes, or plugs with 2100F hardener. However,  high concentrations of resin may cause increased temperatures. (exotherm). We supply slower hardeners (2100S, 2100X) for mixing with Resin Research 2000CE Ultra Epoxy to reduce the exotherm (heat output) in enclosed areas. See the mix ratios by volume and weight here.

  • All base materials suitable for epoxy, including marine surfaces, wood, surfboard blanks or any unsealed surface (wood, EPS,  styrofoam, concrete, balsa or PU) must be completely dust free and any paintwork or sealer/filler completely dry.
  • The room working temperature should ideally be 24 Degrees Celsius (24º C) or more.
  • Blanks should be at room temperature or higher for 24 hours or more before glassing to avoid gassing.
  • The resin and hardener must be kept at room temperature 24 hours before beginning. If Part A is cold and thick, unscrew the lid and warm the A component, the Epoxy Resin, in a microwave oven for 20 seconds then add the B component to the warm resin. Be careful – it may react quicker as a result. Alternatively, leave the resin in an elevated temperature place for 24 hours or more.
  • Add Additive F if required at the rate of 1% (10 ml per litre) to the resin (Part A) only, after measuring, but before blending. This is an anti-blooming additive that also aids sanding. Use it in all layers to aid mechanical and chemical keying between layers. You may need to experiment. Do not use additive F in any other Epoxy resin – it is formulated for Resin Research Epoxy Resin only. (Seriously.)
  • Measure precisely two parts Resin (Part A) (excluding Additive F) to one part Hardener (Part B)  i.e. (2:1) by volume.  The mix by weight is 100:45. Use a graduated pot for best results, or weight separately. (See the Mix Ratio chart here for the weights and volumes required). Use separate plastic measuring jugs and keep them apart. We suggest you need 750 ml of mix per layer per side per board. A 3-litre pack should do a small surfboard. You may need, or use, more or less.
  • Blend the two products in a fresh or clean container by stirring with a flat stick for at least one minute. (The flat stick is vital – see the video). Scrape the sides of the mixing container frequently. Do not frappe or introduce air into the mix.
  • Leave to stand for one or two minutes to aid the release of air and to help the hardening process.
  • Spread evenly and quickly over the base material (wood, fibreglass, aramid, carbon, flax etc) using exactly the same techniques you would use for Polyester Resin, but using a plastic spreader, not a squeegee. Spread evenly but do not pull out too much resin. Consider a 50/50 resin/fibreglass balance if possible.
  • The resin should remain usable for 15-20 minutes at 25º C.
  • The surface can be turned or re-coated after 2 – 3 hours, depending on temperature and humidity.
  • Re-coat with another layer within 12-18 hours – do not leave to fully cure to ensure a chemical and physical bond.
  • Sand within 24 hours.
  • Polish, or coat with acrylic, Polyester Gloss, or speed coat. (See How to Gloss instructions for Epoxy)
  • A full multi-layer laminate reaches full cure after 24 hours at elevated (35º C+) temperatures, or after 7 days at room temperature.

These instructions are offered in the best faith but may not be correct under different conditions outside our control. We strongly suggest you adapt these instructions by sampling to suit your own conditions and circumstances.