I laid a patio last August but was a bit careless when handling the mortar. As a result there are a multitude of finger and splash marks, and even footprints see photo here.
The stains are all but invisible when the paving is damp, so the last resort is to apply a matt sealer. Before I do this, are there any other options? Jet washing and wire brushing had zero effect. And I don't want to risk an acid-based cleaner in case it affects the paving or nearby fish pond!
Light mortar stains on indian stone
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Tony McC
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I'd look at using a NON-ACIDIC cleaner first, see how that goes, and then, if further treatment si required, trial a small, discreet area with a phosphoric acid cleaner to see if that helps.
Relying on a sealant, no matter how good it may be, to temporarily mask a stain problem, only seals in the stain, protecting it from the very weathering that would, under normal conditions, see it vanish over a year or two....and then, when the sealant inevitably weathers away, you're right back at square one minus several twenty quid notes!
Relying on a sealant, no matter how good it may be, to temporarily mask a stain problem, only seals in the stain, protecting it from the very weathering that would, under normal conditions, see it vanish over a year or two....and then, when the sealant inevitably weathers away, you're right back at square one minus several twenty quid notes!
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