powerwashing limestone facade

This same thread, word for word was posted a couple of days ago. Didnt you get any responses?Check the archives.

Posted by: guest at October 24, 2007 11:15 PM

This exact question was posed a few days ago.Check the archives.

Posted by: guest at October 24, 2007 11:16 PM

I think this person posted again because they did not receive any responses the first time around. Can anyone help out here?

Posted by: guest at October 24, 2007 11:23 PM

I had parts of a limestone facade washed last year by Joe Militello of Magic Touch, 718-894-0400. He used a boom truck with a power washing rig so he was able to readily access the entire facade. I think the cost was $1500 for about 2 days work. A word of caution, limestone is soft and can be damaged by high pressure washing. There are gentler methods which employ a constant flow of water however they do take some time.

Posted by: guest at October 25, 2007 8:52 AM

Limestone is an extremely delicate and porous material. If you choose to pressure wash it your contractor should use no more than 300 PSI of pressure, and probably a lot less.

More info than you'll ever need about masonry cleaing is available here:

http://www.nps.gov/history/hps/tps/briefs/brief01.htm#Cleaning%20Methods%20and%20Materials

Posted by: guest at October 25, 2007 9:42 AM

Hey, is anyone aware of grant money that may be available to homeowners in historic districts. I have a limestone bldg. as well.

Posted by: guest at October 25, 2007 6:48 PM

thank you for the good advice... I was the original post also, but no one responded - somehow my question was ignored the first time around

Posted by: guest at October 28, 2007 2:23 PM