ProJoint Porcelain Primer
The ProJoint™ Porcelain™ Primer is an ultra-high polymer and fibre modified flexible waterproofing primer with excellent workability and adhesion properties. Applied in one coat for fast application to promote adhesion and control suction on difficult substrates such as porcelain, concrete, ceramic tiles, paving slabs or setts.
The powdered primer is supplied in two 10kg bags to allow the bucket to act as the ideal mixing vessel with the simple addition of water.
• One coat application to the underside of paving
• Excellent workability and adhesion properties
• Suitable for brush or roller application
• Can be applied in low temperatures
• Suitable for internal and external use
• 2 x 10kg bags contained within the mixing tub
ProJoint™ Porcelain™ Primer is designed to be applied to the underside of porcelain paving and other low absorption substrates to promote adhesion. The underside of the paving should be clean, dry and free of any material which may impair adhesion – do not apply to shiny surfaces. Do not use in wet weather and do not use if frost is forecast within 24 hours of application. Suitable for use in temperatures between 3°C and 25°C.
ProJoint™ Porcelain™ Primer should be mixed with 2.8 litres of cold clean water per 10kg bag. Remove the bag from the bucket and add the water to the mixing container. Add the powder slowly and mix using a plasterers’ whisk. Mix for 2 minutes, leave standing for 2 minutes then re-mix – this process allows the polymer additives to dissolve and activate.
Apply a thorough and even coat of the primer as a slurry using a masonry brush or roller to the underside of the paving. The pot life of the mixed slurry is approximately 60 minutes at 20°C. Depending on temperature and moisture, the primer should cure sufficiently for the paving to be laid in 10 to 15 minutes following application.
All tools should be washed out with water immediately after use. Waste material should not be emptied into drainage systems.
Approximate coverage per 20kg tub is 21.5m2 depending on the application method and paving porosity.
See the online ProJoint™ consumption calculator for estimating projects.
When stored unopened in a dry place above 5°C, shelf life is 12 months from date of manufacture.
For health and safety information – a full datasheet is available on request.