| Author | Message | ||
     Old_school (Old_school) Senior Member Username: Old_school Post Number: 1099 Registered: 01-2009 |
I sure it will work, but those posts are from 4 years ago. Problem solved by now I hope. | ||
| Liberty_softwash (Liberty_softwash) New member Username: Liberty_softwash Post Number: 2 Registered: 03-2015 |
We use a Product called F9 rust remover and clean these slate roofs using a soft washing method. | ||
| Sethr (Sethr) New member Username: Sethr Post Number: 3 Registered: 03-2015 |
Do these dust stains come out easily? What was the result? I have an identical situation on my roof, right below where two pipes were re-flashed... | ||
| Olde_mohawk_masonry__historic_restoration (Olde_mohawk_masonry__historic_restoration) Senior Member Username: Olde_mohawk_masonry__historic_restoration Post Number: 152 Registered: 04-2007 |
It's a dust stain, for sure. What color chalk do your guys carry in their chalk boxes? Orange or red, I'm guessing. | ||
| Old_school (Old_school) Senior Member Username: Old_school Post Number: 615 Registered: 01-2009 |
Good one Liam! | ||
| Slate_man (Slate_man) Senior Member Username: Slate_man Post Number: 649 Registered: 01-2007 |
What about pollen from the trees! | ||
| China_ad_slate (China_ad_slate) Junior Member Username: China_ad_slate Post Number: 16 Registered: 01-2011 |
Maybe Iron content is high. Thus the slate exposed to the air is easy to rust. Nancy Rao Shanghai AD slate Co., Ltd ASTM-S1/EN12326 T1 S1 A1 Roofing slate manufacturer. WEB: www.cnslate.com TEL: 86-21-61910796 FAX: 86-21-62199550 | ||
| China_ad_slate (China_ad_slate) Junior Member Username: China_ad_slate Post Number: 15 Registered: 01-2011 |
like moldy¡¤¡¤¡¤ Never see this situation. Nancy Rao Shanghai AD slate Co., Ltd ASTM-S1/EN12326 T1 S1 A1 Roofing slate manufacturer. WEB: www.cnslate.com TEL: 86-21-61910796 FAX: 86-21-62199550 | ||
| Old_school (Old_school) Senior Member Username: Old_school Post Number: 611 Registered: 01-2009 |
Its above the stack pipe flashing. Water runs downhill! Use a brush and some water and see if it comes off easily. Then watch for it to return. It almost looks like a heavy pollen off from a tree, but I don't see any leaves any where close. | ||
| Barry_smith (Barry_smith) New member Username: Barry_smith Post Number: 3 Registered: 12-2006 |
It happened after phase one of the job. There is more work to do, but the customer is understandably confused at my story that we didn't do this and is waiting to see how I will deal with it. I told her that will clean it up, because it isn't worth an argument. | ||
| Epl (Epl) Senior Member Username: Epl Post Number: 109 Registered: 06-2009 |
It almost appears to be an overspray of some sort. Rust would be odd since the "stain" is concentrated in just this area with no obvious metal above it. Is this after completion of the project? I see a few broke slates there and that hip may need a little further attention. I would try brush and water prior to anything more extreme (i.e. chemicals). Eric P. Loema Sales | Salvage | Procurement P (800) 699-5695 | F (815) 547-1425 Web: www.TileandSlateSales.com | www.ClayTileRoof.com E-mail: epl@TileandSlateSales.com | epl@ClayTileRoof.com | ||
| Old_school (Old_school) Senior Member Username: Old_school Post Number: 610 Registered: 01-2009 |
Strange indeed! | ||
| Barry_smith (Barry_smith) New member Username: Barry_smith Post Number: 2 Registered: 12-2006 |
My guys worked on this roof in Pittsburgh and a week later, the customer was complaining about an "orange stain" in the area of one of the new copper pipe flashings. We finally got back there last week (3 weeks after finishing the job) and this is what we found. It is like someone hit it with a rusty spray of some kind. This is two stories up. The customer was out of town during this period, and says that no tree spraying or anything like that was ordered. My guys claim that nothing was spilled on the job, and I believe them. We will try to clean them with a stiff brush and water. Waduya think?  |
