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UltraScape Pro-Prime Slurry Primer

UltraScape Pro-Prime Slurry Primer

Brand: Instarmac

Regular price £26.22
(£31.46 Inc VAT)
Regular price Sale price £26.22
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Pro-Prime Slurry provides an exceptional bond between your paving element and UltraScape Pro-Bed HS/Eco-Bed - bedding mortar.

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  • Datasheet


Provides an exceptional bond between paving elements and UltraScape Pro-Bed HS/Eco-Bed fine bedding mortar.

    • Pack Size: 20 kg paper bag
    • Colour: Grey
    • Yield: Approximately 16.9 litres per 20 kg bag
    • Coverage: 15 m2 per 20 kg bag


UltraScape Pro-Prime Slurry Primer

UltraScape Pro-Prime Slurry Primer me

UltraScape Pro-Prime Slurry Primer is specifically formulated to provide exceptional bond between all types of stone surfaces and 20 mm porcelain tiles and UltraScape bedding mortars.

    • Pack Size: 20 kg paper bag
    • Colour: Grey
    • Yield: Approximately 16.9 litres per 20 kg bag
    • Coverage: 15 m2 per 20 kg bag 

For bulk orders please contact us on 01933 426225 for the best deals available. Large local stock at multiple U.K. branches, with collection by appointment welcomed. To locate your nearest branch please click here

Product Description
UltraScape Pro-Prime Slurry Primer provides the bond between paving elements though can also be used to promote the bond between your road-base and the UltraScape Pro-Bed HS/Eco-Bed bedding mortar layer. Traditionally paving elements would be laid directly onto the bedding mortar, which with general wear and tear and increasing traffic load bearing, could result in costly and high profile failures. Pro-Prime helps to eliminate this.

The use of Pro-Prime in conjunction with UltraScape Eco-Bed ensures full and even contact will be made with aggregate particles as well as promoting adhesion to greater than 2 N/mm2
as per the requirements of BS 7533. The product is suitable for application in town centre pedestrian schemes, pathways and carriageways. Pro-Prime can be used with all types of natural stone, concrete flags and clay paviours. 

Product Advantages

    • Provides an exceptional bond between bedding concretes and all types of paving elements
    • User-friendly – requires only the addition of water on-site
    • BS 7533 compliant
    • Quick and easy application
    • Part of the UltraScape mortar paving system, which guarantees compatibility and reduces split liability
    • Available in 20 kg paper bags
    • NBS Plus registered for ease of specification 

Information Video

BS 7533 Compliant Mortar Paving Installation System

To download the UltraScape Compliant Paving System brochure please click here.


Supporting Products

Technical Details
Pro-Prime is 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 mm to 2 mm immediately prior to their placement on Pro-Bed HS/Eco-Bed.


Correct surface preparation is critical in order to guarantee successful application and durable product performance.

    • Remove all debris and ponded water from the supporting structure/road-base
    • The road-base as well as the paving elements should be cleaned by brushing or washing with water to remove dust, loose material, packaging and/or production aids prior to the application of Pro-Prime 


    • Place 7 litres of clean water in a suitable container
    • Add Pro-Prime powder slowly and mix for 3 to 5 minutes to create a smooth lump-free slurry
    • The primer should be used on the supporting layer/road-base immediately prior to the application of the laying course (Eco-Bed). Always prime the underside of paving elements at a thickness of 1 mm - 2 mm immediately before their placement upon Pro-Bed HS/Eco-Bed 


    • All surfaces should be pre-soaked with clean water immediately prior to the application of Pro-Prime slurry primer
    • The supporting layer/road-base should be coated with the primer at a thickness of 1 mm - 2 mm immediately before the application of Eco-Bed
    • The slurry should be fresh and wet when the fine bedding concrete is laid 


    • Please ensure that appropriate PPE is used when preparing, mixing and applying products
    • Always wash hands before consuming food and make sure that materials are kept safely out of reach of children and animals
    • Please dispose of packaging and waste responsibly and in accordance with local authority requirements
    • A full material safety data sheet relating to this product is available - please contact us to request a copy 

Contact Us

For additional technical advice, a bespoke quote or product support, please contact us. Alternatively, please use our online enquiry form and we will respond shortly.



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