Penetrating Epoxy Wood Sealer

From: £57.00

Clear Penetrating Epoxy Wood Sealer is the perfect primer for varnish or paint finishes. Make exterior varnish last with the trick used on wooden boats – prime the wood with Smiths Clear Penetrating Epoxy Sealer (CPES) first.

Clear Penetrating Epoxy Sealer - CPES

Clear Penetrating Epoxy Sealer™ (Smiths CPES™) is a thin epoxy that will penetrate deeply into the surface of wood. It is the ultimate primer for wood to make paint or varnish stick. CPES restores strength to rotten wood and waterproofs all wood.

Clear Penetrating Epoxy Wood Sealer is a thin epoxy that penetrates deeply into the surface of wood and completely seals abnormal porosity. It seals wood from water ingress yet leaves a microporous finish that allows wood to breathe, and will chemically bond your top coat of paint or varnish to the timber. This can significantly increase the life of your topcoat

Smiths CPES Wood Sealer

  • chemically bonds to the structure of the wood, made largely from natural wood resin
  • chemically bonds the top coat of paint or varnish to the timber
  • simply the best wood primer there is as it chemically bonds paint to the top layers of wood fibres
  • as flexible as the wood itself
  • allows the wood to breathe
  • seals porosity and stabilises wood
  • resists rot and decay
  • reduces maintenance costs dramatically

Priming Wood for Varnish or Paint with Clear Penetrating Epoxy Sealer

permanent varnish finish on boat

Christian, pictured above on Taurus, achieved a 16 year life from the varnish finish on his boat in sunny climates. Clear Penetrating Epoxy Wood Sealer was the primer that gave the epifanes varnish that long life.

We have published an ongoing durability test of Epifanes over CPES in the UK along with full instructions of how to do it when we restored our wooden house sign.

varnished wood after 18 months exposure to the UK

CPES Temperature variations

Clear Penetrating Epoxy Sealer CPES working and curing times

Clear Penetrating Epoxy Sealer is provided in two temperature variants, a Cold and a Warm weather formula. Only the solvent blends differ between the two. There is a good overlap of temperatures where you can use either to prime new wood prior to applying varnish or paint. See here for more information on whether to use Warm or Cold CPES.

Sealing Wooden Worktops

Oils are traditionally used to seal Wooden worktops. This is a finish that requires regular replenishment, and offers limited durability. Failures occur:

  • Around water, as insufficient protection is offered by the oil, and the worktop starts to rot
  • Cosmetic failures caused by staining or contamination of the wooden surface during use

Smiths clear penetrating epoxy sealer seals wooden worksurfaces very effectively. The indoor environment with little UV light ensures the finish lasts well. Retreatment is typically needed every two years. It protects excellently against water ingress, and edges around sinks and tap holes can be very thoroughly treated to ensure that rot does not start there.

Full details of how to obtain a consistent natural wood matt finish are in this article.

It should be noted that Smiths CPES is not tested and approved for food preperation surfaces. As such we woudl not recommend it be used on direct food preperation surfaces such as chopping boards etc.

Restoring and Sealing Wooden Hot Tubs

Use Smiths CPES to restore Cedar hot tubs that have started to rot.

Add significant durability to wooden hot tubs by treating them with CPES prior to commissioning them. This will significantly reduce the moisture levels in the timber, and thus prolong it’s life.

 

Additional information

Clear Penetrating Epoxy Sealer - CPES

Weight N/A
Dimensions N/A
Temperature

Cold, Warm

Size

1 Litre, 2 Litre, 10 Litre, 7.6 Litre – 2 US Gallons

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