Masonry primer LIME PRIME

plasterfor bricksfor concrete

Product overview
Lime Prime is a waterborne primer designed for porous and less cohesive substrates prior to the application of waterborne dispersion coatings. It consolidates dusty and friable surfaces, improves adhesion of subsequent coatings and reduces the risk of surface defects. Typical substrates include older dusty renders and porous materials such as concrete, brick, calcium silicate stone and lime plaster. In retrofit work (for example when a vapour control layer has been omitted) Lime Prime provides a stabilised base so that liquid airtight membranes like Passive Purple or Airtight White can bond reliably, helping restore airtightness to building-control standards.

Related Guides

• Builder Forgot the Vapour Control Layer? How to Fix It
• Case Study: Enhancing Adhesion with Primer in an ICF & Blockwork Build
• What is Airtightness (and Why It Matters for Net Zero Buildings)

Application

• Apply Lime Prime by low-pressure or airless spray; roller application may be possible in some contexts
• Typical single layer: approximately 100 g/m2, depending on substrate porosity
• Shake before use
• Remove dust and all friable material from the substrate prior to application
• Substrate preparation is required; the primer does not replace mechanical preparation
• Allow to dry before applying waterborne dispersion coatings
• Do not dilute
• Apply only on porous substrates
• Minimum application temperature: +5° C; recommended range: +5° C to +35° C
• Do not apply in direct sunlight
• Clean tools with water

Typical uses

• Consolidation of older dusty lime-based renders and plasters
• Stabilisation of water-sensitive substrates such as gypsum board and gypsum plaster

Technical data

• Applied by: Spray or roller
• Size: 10 kg
• Coverage/Layer: ~100 g/m2 (one layer; dependent on porosity)
• Key points: Retrofit applications; lime plaster/render; heritage and conservation; use with liquid airtight membranes (e.g. Passive Purple, Airtight White)

Technical Data Sheets (titles)

• Lime Prime - Technical Data Sheet (TDS)
• Lime Prime - Install Guide
• Lime Prime - Safety Data Sheet (SDS)

Specifications

• Type: Waterborne primer for porous and less cohesive substrates
• Purpose: Consolidates substrate and improves adhesion of waterborne dispersion coatings
• Typical substrates: Concrete, brick, calcium silicate stone, lime render, lime plaster
• Application: Low-pressure spray or airless spray (roller possible in some contexts)
• Application rate: Approximately 100 g/m2 (single layer)
• Layers: Apply only one layer
• Do not dilute
• Allow to dry before overcoating with waterborne dispersion coatings
• Temperature limits: Minimum +5° C; recommended +5° C to +35° C
• Do not apply in direct sunlight
• Tool cleaning: Water
• Pack size: 10 kg