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WOOD SATURATION COAT: PREPARATION FOR COVERING WOOD WITH FIBERGLASS & POLYESTER OR EPOXY

WOOD SATURATION COAT: PREPARATION FOR COVERING WOOD WITH FIBERGLASS & POLYESTER OR EPOXY

Why Use a Resin Penetration Coat on Wood?

 Reducing the viscosity of the resin by thinning it allows resin to penetrate deeper into the surface of the wood.  Successive coats now have a deeper base to bond with.

Applying Wood Saturation Coat of Resin:

  1. If there is existing wood in the area(s) you will be working in you can also apply this treatment for a better bond:
    • Remove all paint and foreign material from surface of old wood
  2. Make sure wood is clean and dry.
  3. Sand surface with 60 or 80 Grit to rough up the surface.
  4. Catalyze/mix resin and thin with solvent.
    • Mix Epoxy and Hardener and thin 25% with epoxy solvent.
    • Catalyze Polyester or Vinylester and thin 25% with acetone.
    • NEVER mix POLYESTER and EPOXY together.
  5. Brush or roll thinned resin onto the wood.
    • Cover as many surfaces as possible.
  6. Allow resin to cure.
  7. Sand lightly with 60 or 80 Grit to de-burr surface.
    • DO NOT sand thru the primer coat.
  8. You are now ready to lay up your glass.

The sealed wood will now have a better water resistance than plain untreated wood.  A saturation coat will also work for any wood exposed to the weather, so it may be used in many different building applications and not just for the marine environment.

 

This Post Has 3 Comments
  1. I am installing a new deck with new plywood should I still put a saturation coat of resin before layup

    1. Yes, you should resin saturate the plywood prior to the layup as it will help protect the wood.

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