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Peter Hounslow asked the Naked Scientists: I have a kitchen bench top made of Laminex. I have been told by tradesmen that Laminex goes porous as it ages and this is certainly true of my bench top. If I spill tea on it, the tea stains the bench top and I can only get it clean with household bleach. I have been searching for something to seal the Laminex to prevent it being stained and so far I have failed. I reason that if the low viscosity tea stain can get into the surface then so can an equally low viscosity sealant. My high school chemistry teacher would probably be turning in his grave. Do you know of any such chemical sealant? I have tried hardware shop lacquers but once they dry I can still see and feel them proud of the surface. I am imagining some sort of low viscosity chemical substance that will penetrate (like the tea stain) and dry to a transparent finish. Any advice would be greatly appreciated.Thank you and regards,Peter Hounslow.What do you think?