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Super Clean! No agitating just spray on and hose off!

I had a bad batch if F13 last year, bought it again and it's been working great all season. Try to shake the container next time before using it.

Chesapeake wrote:

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We've been using F13 for several years with nothing but good luck. You need to remember that the F13 will not work very well once the temps start to drop. It's already taking us longer to whiten gutters on the morning jobs as compared to the afternoon ones because of the lower temps.

-- Edited by Chesapeake on Tuesday 18th of October 2011 08:40:19 PM

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 Same here.

 

I believe it needs to be 60 degrees or better for it to work.  It's worked wonders 9 out of 10 times for us on gutters.  I could be wrong but I think it's largely butyl (sp).

Super clean, eh Dave?  I'll look in to that.

Works Great for me! I never had a problem with it in the 2 years I've been using It

When using the F-13 do you guys use it to remove the mold and mildew on gutters, or do you hit that first with your house mix and then F-13 for the black streaks?

I had one job where the F-13 did not do a thing for the gutters, but has worked on every other job I used it on. Sometimes I find I have to scrub a bit, then sometimes it rinses right off. I think the finish may have a lot to do with, depending on the gutter manufacturer.

I would give it another shot on a different job.

There are lots of different gutter manufacturers with many degrees of enamel quality. Try it on the next one, we all run into gutters that don't want to come out.

Some gutters just dont come clean no matter what you use then you look like a jack ass when you had told the customer they should come clean. That is why i do not offer gutters whitening past september 30th. It gets to cold and if it isn't blazing out it will not work to well if not at all. I hate scrubbing gutters and i dont press the issue unless the customer does first.