cleaning 80 yr. old cut stone bldg.

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soluble solutions

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We have been asked to give a bid on cleaning a 80 yr. old cut stone building (court house). I would post pics., but don't know how (tried). The building has dark, mold,mildew and other pollutants on it. It's not bad every where, but around window sills and door ways are the worst. What I want to know is what some of you more experienced guys are using to clean such surfaces. I'm concerned due to the fact that the public (people traffic) is involved and there is grass and decorative vegetation (landscaping) around building along with trees. What am I looking at chemical wise, or can I just remove with pressure and heat? I've read of people using both, but what is the most effective way that is going to get this building clean. If you guys utilize chemicals....what types? If anyone would like pics., I have several, but could probably just email them to you. Any advice would be great. I have about a week and a half to put together a proposal.

Also tried the search, but couldn't really find what I was looking for info. wise. We've done a lot of flat work, but not a lot of experience doing stone buildings.

Thanks, Steve
 
There is information and products here: http://www.eacochem.com/

I have used there NMD_80 in the past and have been pleased. I know some of the people on here use there products for rock/stone as well.
 
I appreciate the responses. I would have to agree with you. I have been in contact with EaCo Chem (this morning) and they are putting together some info. for us. Great people to deal with. Thanks for the advice.

Steve Cellar
Soluble Solutions, LLC
 
Have you PM Henry, I would say Henry, Matt & John T have experience with this type of work.

I dont get much historic cleaning in phoenix, I have done some.

I would say test what ever you use if a couple areas. Always check it out first.

Please post those photos.

I would say give Henry a ring, he may even be able to sell the chems.
 
I've done quite a bit of work like that over the last year. I'd use Safe Restore from Eaco Chem. Excellent product and excellent support.

P.S.

I don't sell chems, but I do use them and for that project I'd use the Safe Restore or Urban Gelrilla. (Not sure if that's spelled right)
 
Thanks for the replies, I appreciate the advice. Henry, you would be correct about the cleaning products. I have been in contact with EaCo Chem and they just sent me the info. on both products you stated with the MSDS sheets. Now, we'll just have to get some product...try it in a small area and see what it does. I feel like I can't, nor shouldn't, give an estimate until I test and area so that I'm careful not to "write a check I can't cash" so to speak. I want to see what both the product is going to do and how long it is going to take to do it.

Ron, I wish I could post the pics. here. However, I'm not the most computer literate person. If someone can dumb it down for me and explain it to me, I would be happy to post pics.

Steve Cellar
Soluble Solutions, LLC
(419) 651-2793
 
Safe Restore is some awesome stuff. I've used it on 3 limestone and brick buildings this month and they came out great. The urban Gelrilla stuff is a new product and I think it's basically Safe Restore with a gell compound added to it for better cling and longer dwell times. It's quite a bit more expensive but if you need it, you need it.

Prosoco also has some excellent products out there but in my experience it had to dwell longer and it was more difficult to work with.

With the Safe Restore and Urban Gelrilla I was able to spray on with a spray system I built for building restoration jobs. (it's a modified Deckster) So you won't need really expensive fancy pumps to apply it.

If you or anyone else has questions about building washing or building and stone restoration, just give me a call on my cell.
 
Well, I met with my local EaCo Chem rep. today. We did a test spot with the samples he provided. All I can say is holy cow!!! That SafeRestore does the job. I admit, I was a little skeptical, after watching it work, it made a believer out of me. It took off that 80 yr. old build up with no problem. Also used some of that NMD 80 on some rust spots. Again, worked like a charm.

Those folks at EaCo Chem have really gone out of their way to make sure we got what we needed and they were very congenial in the process. I would recommend them anyone to anyone.

Now we have the task of putting together an estimate. I can' wait until they see the results we got. Thay are going to flip.

Thanks again to all of you for all the advice.

Steve
 
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