Home > Companies > Instarmac Group plc > Ultrascape Pro-Prime Slurry Primer

Polymer modified cementitious slurry primer specifically formulated to provide exceptional bond between all types of stone surfaces and Ultrascape Pro-Bed HS fine bedding concrete. It ensures full and even contact is made with aggregate particles as well as promoting adhesion to greater than 2 N/mm² as per the requirements of BS 7533. Suitable for application in town centre pedestrian schemes, pathways and carriageways and can be used with all types of natural stone, concrete flags and clay paviours.

Supplied pre-blended in 20 kg bags. With the simple addition of water on-site, the product creates a liquid slurry paste, which can be applied to the underside of all paving elements at a thickness of 1–2 mm immediately prior to their placement on Ultrascape Pro-Bed HS.


  • Quick and easy application.
  • User friendly.
  • BS 7533 compliant.
  • Part of the Ultrascape streetscape system, which guarantees compatibility and reduces split liability.

Related literature

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Standard product features


Grey (As with all raw materials, colour variation may occur).

Technical properties:

  • Coverage: A 20 kg bag mixed with 7 L of water will cover 15 m² at 1–2 mm thickness.
  • Yield: 16.9 L per 20 kg bag (approximately).
  • Bond adhesion strength (28 days): 2.20 N/mm².

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-35-64/320 Primers for paving

Product specification

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Instarmac Group plc


+44 (0)1827 254400

Product reference

Ultrascape Pro-Prime Slurry Primer

Manufacturer details

Danny Morson Way,
Birch Coppice Business Park,
Staffordshire, B78 1SE
Tel +44 (0)1827 254400
Fax +44 (0)1827 285386
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