Hobbyists & Industry luminaries alike learn on every visit
(we earn from 'affiliate link' purchases)

Curated with aloha by
Ted Mooney, P.E. RET

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing 1989-2025

-----

Removing black mold from limestone house

Mold Kill

on Amazon

(affil links)

"The Mold Survival Guide"

on AbeBooks

or Amazon

(affil links)

Q. How can I clean the outside of my house?

It is a white Texas limestone and has turned black and green mostly on the north side. I tried Pressure spraying and it removes the green but not the black.

Thanks for any advice,

William Ashness
- Kyle, Texas
2003

A. Try a cup of clorox in a gallon of water, soft brush, cool day.

Don't let mixture dry on stone. Keep wet for twenty to thirty minutes then wash with dish soap and water. Rinse & let dry. Repeat as needed.

Don Jones
- Victoria, Texas
2003

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: