Please note we will be closed for the Spring Bank Holiday and Platinum Jubilee on Thurs 2nd and Fri 3rd June, therefore orders placed after 12 midday on Tuesday 31st May will be delivered the following week.

Cover-Coat Opaque Underglazes 59ml

If you love layers, coat your pieces with Cover-Coat Opaque Underglazes! Applied directly to soft-fired bisque or bisque, these underglazes provide solid coverage over even the darkest colours, and are perfect for airbrushing and brushwork.

Cover-Coats are nontoxic clay and water based opaque underglazes. These opaque colours are to be used when areas of solid-colour coverage are desired. When one colour is properly applied over another, the second colour will totally block out the first colour. Cover-Coats are applied directly to greenware or 04 bisque then bisque fired to witness cone 04. A glaze finish is required to seal the porous surface and to brighten the underglaze colours, although the fired colours can be left unglazed for decorating effects like the terra-cotta look or polished Cover-Coat.

For most Cover-Coats, any transparent or semi-opaque glaze can be used. On any nonutility item, a nonfired Ceramic Spray or Brush-On Sealer can be used as a finishing coat. Cover-Coat colours will have a more pastel quality when nonfired sealers or matte-finish glazes are applied than when they are finished with a fired Gloss Glaze.

How to use Cover-Coat Opaque Underglazes

  1. Apply 3 coats to bisque (ensure each coat dries fully.)
  2. Fire to shelf cone 04 to permanently adhere Cover-Coats to ware.
  3. Apply clear glaze if desired and fire to shelf cone 06.
  4. Clean up with water.

Download the Cover Coats Underglazes MSDS here.