What if water washing is not appropriate for cleaning my historic masonry?

Abrasive cleaning methods (sandblasting) are not safe for historic masonry. Chemical cleaners are another option for cleaning your historic masonry. Do not use in cold weather (same hazards as water cleaning). Test first: Chemicals can stain, etch, or burn the surface. Always rinse thoroughly and test the surface for a neutral pH.

Acidic Cleaners

Use on non-acid sensitive masonry, such as:

  • Cast stone
  • Concrete
  • Granite
  • Most sandstone
  • Slate
  • Unglazed terra cotta

Alkaline Cleaners

Use on acid-sensitive masonry, such as:

  • Glazed brick
  • Glazed terra cotta
  • Limestone
  • Marble
  • Polished granite

Paint removal is most successful with alkaline, organic solvent, or other chemical paint removers.

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1. Can you recommend a contractor or repair person?
2. How do I start a home construction project?
3. A contractor took payment, but failed to perform the work. What should I do?
4. How do I find property maintenance standards?
5. How can I find someone to repair or replace original materials on my house?
6. How do I find the Ohio Building Codes?
7. Do you have the plans for my home?
8. How often should chimneys be cleaned?
9. I’m concerned about a property in my neighborhood and would like to file a complaint. Do I have to give my name?
10. I’m concerned about lead in my Shaker home?
11. What are the construction hours?
12. What color may I paint my home?
13. What if water washing is not appropriate for cleaning my historic masonry?
14. What shingle colors may I use on my home?
15. How do I know if my slate roof needs maintenance?
16. How do I know when my slates are beyond repair?
17. Why should I preserve my home's slate roof?
18. If I do decide to replace windows, which is better, wood or vinyl?
19. Several of my windows are showing signs of wear and tear in various places. Does the entire window have to be replaced?
20. With the vast array of window styles available, how do I know which is the most appropriate for my home?
21. Are licensed contractors recommended or vetted by the City?
22. I received a sidewalk repair notice?
23. Does my project require permits?
24. Should I get utility line protection insurance?
25. Why is my water discolored?