Primer IM : Optimal Primer for Enhancing Adhesion on Porous Substrates - External Wall Primer
Verified by manufacturer 19 hours ago
Primer IM is a waterborne primer, applied on dense substrates prior to the application of waterborne dispersion coatings.
Application
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
Description
Primer IM – Consolidating Micro-Emulsion Primer for Dense Substrates
Product Description
Primer IM is a waterborne, micro-emulsion primer designed for use on mineral substrates prior to the application of waterborne dispersion coatings.
Formulated with ultra-fine molecular particles, Primer IM penetrates deeply into mineral substrates, where it acts both as a consolidant and adhesion-promoting primer. It is particularly suited to aged or weathered surfaces requiring stabilisation before overcoating.
Primer IM is used as:
- A pre-treatment prior to installation of Passive Purple® External
- A post-treatment consolidating primer following installation of Passive Purple®, Airtight White® and Passive Purple® External, where required
Its micro-emulsion formulation enables deep substrate penetration, improving surface integrity while providing an ideal base for subsequent coating systems.
Suitable Substrates
- Concrete
- Lime render (including aged lime)
- Mineral renders
- Calcium silicate stone
- Concrete brick
Primer IM is particularly suitable for refurbishment and retrofit projects, especially on older buildings where consolidation of existing mineral surfaces is required before coating application.
Performance Characteristics
- Deep penetration through micro-emulsion technology
- Consolidates friable or weathered mineral substrates
- Improves adhesion of subsequent waterborne coatings
- High vapour permeability
- Accommodates subtle substrate movement without cracking
- Compatible with high-elongation air and vapour control membranes
- Suitable for both internal and external applications
- Ideal for buildings subject to natural movement
Features and Benefits
- Specifically formulated to enhance coating adhesion on difficult or aged substrates
- Reduces risk of surface defects in subsequent applications
- Waterborne formulation
- Application temperature: +5°C and above
- Supplied in 10L containers
- Shelf life: 12 months (unopened and correctly stored)
General information
Color | White |
Finish | Primed |
Material | Liquid Water-borne |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | M60/14 Eggshell/ satin paint M60/150 Eggshell/ satin paint M60/10 Emulsion paint M60/110 Emulsion paint |
SKU Code | IM/00EPR/10 |
Product range |
Specification data - Primer-undercoats
Classification data | |
Composition | Waterborne. |
Colour | Milky white. |
Drying time | Four hours. Guidance for specification option: The primers will take approximately four hours to dry. However, additional coats may be required depending upon the absorptivity of the substrate. 24 hours should be left between primer coats. Allow to dry before application of waterborne dispersion coatings. |
Density | 1.0–1.1 kg/ L. |
pH | 9.0–10.0. |
Solids content | >20%. |
Application temperature | +5° C to +40° C. Guidance for specification option: For best performance. |
Application method | Low pressure spray or roller. |
Shelf life | 24 month. Guidance for specification option: In un-opened packaging and if stored correctly. Protect against frost. |
Capacity | 5 L. |
Coverage | 100 g/m². Guidance for specification option: Approximate coverage for one layer. |
Sustainability data
Contains Red List materials | No |
Country of material origin | Europe |
Country of product manufacture | Europe |
Material | Liquid Water-borne |
Recyclability | Not recyclable due to its adhesion to other products |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
BIM objects
This BIM object has been authored to meet the requirements of the
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| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
 IFC | - | 1 |
Literature
Literature type
Primer IM - Safety Data Sheet
Primer IM - Install Guide