Primer IM : Optimal Primer for Enhancing Adhesion on Porous Substrates - External Wall Primer

Product Application – Primer IM

Substrate preparation:

• Substrates must be structurally sound, clean, dry and free from dust, laitance, grease, oil, algae, loose particles or any contaminants that may impair adhesion.
• Remove loose or friable material by brushing or suitable mechanical preparation.
• Repair cracks or defects prior to application where required.
• Ensure surfaces are dry and protected from rain or frost prior to application.

Application conditions:

• Apply at substrate and ambient temperatures of +5°C and rising.
• Do not apply during rainfall, fog, frost or where these conditions are expected before the product has dried.
• Avoid application in direct intense sunlight or on overheated substrates.

Application method:

• Stir thoroughly before use.
• Apply by roller, brush or suitable low-pressure spray equipment.
• Apply evenly to achieve full surface coverage without ponding.
• Allow to penetrate into the substrate; do not allow excessive surface build-up.
• One coat is normally sufficient; highly absorbent surfaces may require additional application.

Primer IM functions by deep penetration and consolidation of the mineral substrate, forming a stable and uniform base for subsequent waterborne dispersion coatings.

Drying and overcoating:

• Allow to dry fully before application of subsequent coatings.
• Drying time will vary depending on substrate type, temperature, humidity and ventilation.
• Ensure the surface is visibly dry and consolidated before applying Passive Purple®, Airtight White® or Passive Purple® External.

Cleaning:

• Clean tools and equipment immediately after use with clean water.
• Remove cured material mechanically