Your browser version is not officially supported, and you may experience a degraded service. Please upgrade your browser.

Watco Oil Block Primer

Allows contaminated concrete floors to be painted

  • Two part epoxy primer
  • Seals in grease and oil and makes a good base for painting
  • Ideal for garage and workshops
  • Seals and binds weak, porous surfaces
Frequently bought together


Watco Oil Block Primer is a two part epoxy primer specially developed to aid adhesion to porous floor surfaces that cannot be thoroughly cleaned.

Recommended areas of use

  • Machine workshop floors
  • Factory floors
  • Warehouse floors
  • Garage floors


  • Suitable for concrete, brick and masonry, and it will also work on timber surfaces
  • Not suitable for use on non-porous, previously painted surfaces or metal surfaces
  • Not usually suitable for vegetable, animal or synthetic oil residues. It will tolerate slight dampness in the substrate

It should be over coated with a suitable coating such as Watco Epoxy Gloss Coat.



Properties Specially developed to aid adhesion to porous floor surfaces that cannot be thoroughly cleaned
Suitable for Bare, porous concrete
Interior or Exterior Interior
Composition 2 part, solvent-based epoxy resin
Coverage 16m² per 4L
Number of coats 1
Recommended number of coats 1
Wet film thickness 250 microns
Curing time (at 20°C) 16 hours
Minimum application temperature 10°C
Pot life 30 minutes at 20°C


Surface preparation

Remove as much oil as possible by scraping or grinding. Clean the surface with a degreasant such as Watco Concroff. It is important to rinse all traces of the cleaner away and allow the surface to dry. If using a solvent based cleaner, follow the supplier’s Instructions but, again, all traces should be removed before applying Watco Oil Block Primer.

The floor surface should preferably be dry, but slight traces of residual dampness can be tolerated. If preparing timber, use a suitable cleaner recommended for the purpose and follow the supplier’s Instructions.


Open the inner tins carefully and pour all of the contents of both the resin and curing agent tins into the clean, empty outer tin. Mix thoroughly with a wide bladed stirrer such as Watco Mixing Blade. Scrape the bottom and sides thoroughly to ensure no unmixed material remains. Decant the mixed product into another vessel (or a paint tray, if applying by roller) and apply to the prepared surface.


Do not apply at temperatures below 10°C. Apply one good coat of Oil Block Primer to the prepared surface and allow it to dry. Application by brush is preferable, because it allows the primer to be worked into the surface, but if applying by roller, use a medium pile roller, working it backwards and forwards to encourage penetration into the surface.

Ask a question


Be the first to ask a question...

Ask a question
0 questions / 0 answers

€120.75 (Ex VAT)

Low stock

Do you know the size of the area?

Tools and accessories

What our customers say

Watco Oil Block Primer