Pavestone's 12.5kg Priming Slurry is designed to facilitate the strong bonding of non-porous and low porous porcelain and natural stone paving to create the strong, sustainable bond required. .
Slurry Primer is not just for porcelain, pavestone also strongly recommends using it to prime natural stone paving just prior to laying. This will significantly reduce the potential for 'picture frame' stains and patches from the cement in the base mortar being drawn up through to the face of the stone.
Installing Porcelain paving looks at first glance to be as simple as laying any other paving but a key characteristic of porcelain is an exceptionally low water absorption value, meaning that the paving tile will not draw moisture to the same degree as other paving materials. This is a great benefit when it come to the surface resisting staining and to stay looking clean. However, this also means that porcelain paving will absorb almost nothing from the bedding mortar and consequently, without help, porcelain will not form a strong, sustainable bond to the mortar bed. Brush primer slurry on the underside of each paving tile/slab just prior to laying.
Features & Benefits:
- Consistent mix and performance.
- Easy to apply.
- Shrinkage resistant.
- Contains a fine aggregate which when coated in cement, creates a strong matrix for an improved bond.
- Specialised Fillers give enhanced characteristics making it easier to handle & apply.
- The ratio of sand to cement is critical and would be hard to achieve unless using a pre prepared slurry primer and adding the correct water every time.
- Gelling agents are added to give a good paint like application qualities allowing consistent Coverage: when applying, to avoid missing areas.
- The gelling agents retain water for longer giving a bigger window for achieving a cement-to-cement bond, without slowing down the curing process of the cement.
- The above will be especially true in hot conditions.
- Once activated in water these give similar properties to SBR but with enhanced characteristics.
- In wet conditions a mix of SBR & Cement could stay “live” – and the SBR could be effectively washed away out leaving only the cement.
- When used in conjunction with Pavestone Wall & Cladding adhesive this gives the best possible bond for fixing slabs.
Powdered polymers are used to improve the bond to both the substrate as well as the slab. A polymer modified, cement based, slurry primer, specifically designed to meet the recommended performance characteristics of BS7533. Manufactured from a controlled blend of specially selected aggregates, cements, and synthetic polymers and only requires the addition of water to produce a high quality priming slurry for use to improve the bond strengths of porcelain paving, natural stone setts and cobbles, flags, concrete and clay pavers.
Coverage:
- Approximately 15m² per 12.5kg tub.
Technical.
- Application Thickness Unfilled: 1-2mm.
- Bond Strength: ≥ 2.0 N/mm² after 28 days.
- Compressive Strength: ≥ 35.0 N/mm² .
- Flexural Strength: ≥ 4.5 N/mm².
- Working Life @ 20°C: 60 minutes.
- Complies with BS 7533.
Tensile adhesive strength tests achieve 1.5 N/mm² with BS EN12004 requiring a minimum of 1.0 N/mm². Tests are carried out on a concrete slab and after 28 days when the samples were pulled apart of the concrete slab was removed:
Delivered by Pavestone in 2-3 days.
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