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How much catalyst do i put in Resin or Gelcoat?

April 26, 2017catalyst gelcoat resin

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How much catalyst do i put in Resin or Gelcoat?

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General Purpose polyester resin requires an addition of 2% catalyst, however, in hot weather this can be reduced to 1% to give a little extra working time, but never any less. In cold conditions 3% can help to decrease curing times. Please refer to our Mixing Guide for more information.