NBS Source
313 Sanded Primer

313 Sanded Primer

Parex Ltd Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

  • QA Certificate

    QA Certificate

    Certificate type

An acrylic substrate preparation for the 630 Cerastone® and 632 Spraystone™ finishes used in the ParexTherm, ParexDirect and Advanced Masonry Simulation render systems.

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A 100% acrylic based, ready to use coloured primer designed to adjust the base absorption to substrates prior to the application of the 630 Cerastone® and 632 Spraystone™ finishes. Excellent hiding power and the finishes are water vapour permeable. They do not create a vapour retarder.

Suitable for:

  • In-situ and pre-formed concrete. If required level the surface first with Parex base coat Maite Monocomposant.
  • Base coats in accordance with BS 13914-1.
  • Parex Maite Monocomposant base coat.
  • Parex coloured one-coat renders e.g. Monorex GF.
  • ParexDirect or ParexTherm range of Thermal Insulation Systems.
  • Parex grey one-coat renders, e.g. Parmurex/ Parex waterproofing undercoat systems.
  • Existing flat substrates.
  • Internal walls, drylining, plaster (gypsum) substrates.
  • Painted substrates: The existing paint must demonstrate adequate adhesion or be removed.
  • Parex profiles.

Unsuitable for:

Lime based substrates.


  • BS EN 13914-1 Code of practice for external rendering.
  • BS 8000 Workmanship on building sites.
  • BS EN ISO 14001:2004.

General information

Uniclass 2015

Pr_35_31_66_09 Bonding coatsPrimary


M20/130 Cement:sand (air entrained)

M20/160 Proprietary cement gauged render

M20/5 Cement:sand (air entrained)

M21/20 External wall insulation system . . . . . .

M21/210 External wall insulation system

M22/120 Sprayed

Specification data - Bonding coats

Product Reference

313 Sanded Primer


A wide range of colours is available designed specifically for the 630 Cerastone® and 632 Spraystone™ finishes. Contact Parex ltd for colour samples.

Standard product features

Pack size:

27.7 kg bucket.


Ready-to-use liquid paste containing:

  • Synthetic resins.
  • Pigments.
  • Specific admixtures.

Third party certifications

  • British Board of Agrément (BBA) - certficate : Certificate: 10/4275
  • European Technical Approval : Certificate: 04/0114 (New 2010 approvals pending)
  • Technical Application Document : Certificate: DAT 7/04-1376
  • Irish Agrement Board (IAB) : Certificate: 09/0332 and 09/0342

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