Description
Johnstone’s Trade Aqua Undercoat
Johnstone’s Trade Aqua Undercoat – Water-Based Basecoat for Superior Trim Finishes
Full Product Description:
Aqua Undercoat is specially formulated to work with the Aqua Water-Based Gloss and Satin systems. It promotes excellent adhesion to previously painted or bare surfaces and provides the ideal foundation for a professional, long-lasting finish.
This undercoat ensures great opacity and even coverage, helping to achieve the best possible results with water-based topcoats. It dries quickly, has a low odour, and is ideal for both interior and exterior applications.
✅ Key Features:
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Essential basecoat for Aqua Gloss & Satin
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Promotes adhesion to wood and metal
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Enhances opacity and finish of topcoat
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Quick drying and low odour
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Suitable for interior and exterior use
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Water-based formulation
???? Ideal For:
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Wood and MDF trim
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Previously painted surfaces
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Interior doors, skirtings, and architraves
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Priming radiators and metal pipework (with suitable prep)
???? Technical Details:
| Property | Value |
|---|---|
| Finish | Flat / low sheen undercoat |
| Coverage | Up to 10m² per litre |
| Recoatable Time | 4–6 hours |
| Touch Dry | 1–2 hours |
| Application | Brush, roller, or spray |
| Pack Sizes | 1L, 2.5L, 5L |
| VOC Level | Low |
| Colour Range | White & tinted to match topcoat |
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???? Surface Preparation & Application:
Ensure all surfaces are sound, clean, dry, and free from loose material or grease. Lightly abrade glossy or previously painted areas to provide a key. Stir thoroughly before use and apply 1 full coat. Once dry, follow with Aqua Gloss or Satin for best performance.
⚠️ Important Notes:
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Not designed to be used as a finish coat
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Should be overcoated with Aqua topcoats only
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Do not apply below 10°C or in damp conditions





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