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Stain Block | Interior/Exterior

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STAINBLOCK – undercoat for “difficult" stains & bare ferrous interior metals.

Highly effective for concealing and blocking out difficult stains such as rusted metal, rust staining, tannins from hard woods (oak, mahogany, etc.), water stains on (for example) plaster walls and ceilings from leaking gutters, cisterns, roofs, etc. and many other "difficult to get rid of" stains. *NOTE- Will not block oily/tarry stains such as asphalt or those from coal fires. Coverage approx. 10 square metres per litre. per coat, (2 coats normally needed). Not ideal for some tyoes of cast iron - please ask for advice. Not for aviaries, aquaria, reptiles. Due to the reactive nature of this product, the shelf life is 4 months only.

For full details and technical specifications, please download the Data Sheet for this product:

Download Data Sheet (PDF)


Just to say Your stain block is excellent. Thank you
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