What's the best way to clean very dirty concrete or cement? Does the age of it

  1. Aficionada profile image87
    Aficionadaposted 7 years ago

    What's the best way to clean very dirty concrete or cement?  Does the age of it make a difference?

  2. 5institutes profile image65
    5institutesposted 7 years ago

    Muriatic Acid is probably your best bet.  I used to work in industrial concrete construction, we'd use it all the time.

    There are also various detergents you can use, and pick them up from a professional paint store for the best bet - not the homeowner type of stores.

    Industrial painters often need to coat concrete w/stains and epoxies, etc., so they prep using some high-tech detergents, high-pressure water blasters, and often muriatic acid.

    To wash concrete, it needs to be at least....oh no, I'm forgetting!...I want to say at least 60 days.  30 days at a minimum, but 60 days you will have a full "cure."

    What I would do if I were you is:

    Wash it w/industrial detergent, using a water or hydro-blaster (rent one).
    Finish it with muriatic acid, following the label.

    Repeat if necessary (depending on the oil stains, etc.).  Sometimes you will have to spot-clean using a wire brush, too. Ouch.

  3. AcrotechCSI profile image55
    AcrotechCSIposted 7 years ago

    Power Washing and Steam Cleaning will completely leave your concrete or cement spotless