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Rust on Patio, caused by grass feed

  • 11-11-2017 11:51AM
    #1
    maynooth_rules
    Registered Users, Registered Users 2 Posts: 1,511 ✭✭✭


    Hi guys,
    Hoping this is the right place for this. Put some feed and weed killer on my lawn last week. However I now notice lots of little rust stains on my granite patio. Power washer isn't budging them. Any ideas how to remove them?


Comments

  • #2
    ytpe2r5bxkn0c1
    Closed Accounts Posts: 32,688 ✭✭✭✭ytpe2r5bxkn0c1


    maynooth_rules wrote: »
    Hi guys,
    Hoping this is the right place for this. Put some feed and weed killer on my lawn last week. However I now notice lots of little rust stains on my granite patio. Power washer isn't budging them. Any ideas how to remove them?

    I've heard of people who poured lemon juice on these stains and left it for 5 miners and then scrubbed with a nylon scrubbing brush, leave for another 5 minutes and rinse off - repeat if necessary. I'd test on an area first.


  • #3
    Lumen
    Registered Users, Registered Users 2 Posts: 31,246 ✭✭✭✭Lumen


    Rust is iron oxide so you need a reducing agent like an acid or sodium dithionite.

    BUT granite may be damaged by acid so be careful and test a small bit first.


  • #4
    Hocus Focus
    Registered Users, Registered Users 2 Posts: 755 ✭✭✭Hocus Focus


    Sabrina Full Numbskull wrote: »
    I've heard of people who poured lemon juice on these stains and left it for 5 miners and then scrubbed with a nylon scrubbing brush, leave for another 5 minutes and rinse off - repeat if necessary. I'd test on an area first.
    The 5 miners should make short work of it:)


  • #5
    ytpe2r5bxkn0c1
    Closed Accounts Posts: 32,688 ✭✭✭✭ytpe2r5bxkn0c1


    Hocus Focus wrote: »
    The 5 miners should make short work of it:)

    Hilarious!


    :mad:


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