Porter’s Limeproof Undercoat Sealer is an exterior/interior undercoat primer/sealer that can be applied to bare paintable surfaces as an undercoat sealer.
Porters Lime Proof Undercoat Sealer is a high‑performance, water‑based primer, sealer and undercoat designed for both interior and exterior painting projects. This ultra‑matte, white undercoat seals porous surfaces and prepares them for top coats, improving adhesion and providing a consistent base for most paints and finishes. Suitable for a wide range of substrates, it is quick drying with excellent masking properties, making it an ideal choice for professional painters and DIYers alike.
Key Features & Benefits
Water‑based primer, sealer and undercoat in one product
Suitable for interior and exterior applications
Ultra‑matt white finish for superior coverage and surface uniformity
Excellent masking of imperfections
Thick, quick drying formulation for efficient application
Prepares timber, masonry, plasterboard and other painted or unpainted surfaces
Apply easily by brush, roller or spray
Improves topcoat adhesion and ensures a durable finish
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