COVID-19: Please note that due to the recent coronavirus outbreak we are unable to fulfil orders for some products to domestic addresses due to supplier restrictions.

Please contact us by phone 01207 291 203, email or live chat to check availability before your order. Orders to commercial premises are unaffected at present.

Stopgap Fill and Prime 6.6KG Kit

£20.48 £17.07

In stock. Available from 21st September

Free delivery when you spend over £350


COVERAGE - A 5L bottle of Stopgap P121 Liquid will cover 50m2. STOPGAP P121 is an acrylic primer designed to promote the application characteristics of STOPGAP 1100 GYPSUM, and other suitable STOPGAP smoothing underlayments,to calcium sulphate screeds e.g. anhydrite. It prevents unacceptably rapid drying of adhesives and smoothing underlayments. It is non-flammable and suitable for use over normal underfloor heating installations. STOPGAP P121 is coloured blue to provide the user with visual control of coverage uniformity

Floor Suitability

Blue denotes a suitable type

  • Bathroom
  • Bedroom
  • Conservatory
  • Dining Room
  • Hallway
  • Kitchen
  • Living Room
  • Utility Room
  • Commercial


  • Underfloor Heating
  • Brand


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