Gease staines on flags

[timegoesby]

Anyone know the best method to remove barbecue grease staines from concrete patio flag?

thnx

[ben]

Strong mix of Caustic soda

[soup]

Really annoying those gease. :o)

[BigWallop]

Soap and water. Washing Up liquid is the best, as it has grease cutting agents in it. And hot water of course.

[OldBill]

Gunk or similar engine degreaser is usually recommended.

[Derek ^]

I'd recommend the clear colourless one, ( Jizer ?) rather than Gunk which is of itself the colour of grease stains. Engines are not stained by it but paving stones can be.

DG

[The Natural Philosopher]

concentrated solution of caustic soda.

[Mark]

Biological washing powder is usually good for grease stains. Mix it in some hand hot water and poor over the stains. Scrub hard with a stiff brush and rinse.

Mark.

[PeterK]

My instinct would be to use caustic soda - It has never let me down but I was told that by an art restorer(!) you want to "evaporate" the stain and not risk the caustic taking the broken down oil compounds deeper into the surface. Don't know the difference between fat and mineral oil and that could be crucial but..... I had an oil/grease stain on an "indian"sandstone flag and was advised flood with white spirit - a small dab creates a ring and then either apply acetone (nail varnish remover) and dry with a hair dryer or just dry with a hair dryer. The "cracking flags " weather at the weekend allowed me to forget the acetone and the hairdryer and remove the black greasy thumb print applied by the lad at the builders merchant.

Peter K

[ian a gilles]

id try dipping bread into them, the stain may remain but it could be tasty

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