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Old 02-19-2019, 12:20 PM
 
2,353 posts, read 869,292 times
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Lanai rookie here. Our Lanai on our newly built home is large, has a painted & textured cement slab floor. No pool, no pets, no kids. We had it all screened in w/ bronze aluminum frame and Fifer 20/20 screen. The exterior walls are stucco.

The Lanai faces South, but it the Sun still manages to reach ~1/2 of the floor each morning. No trees on our property, or w/in falling distance, so good air circulation. No flowers or plants inside the Lanai, some plants/shrubs outside of it, but at least 2 feet away. Pine nugget mulch I'm removing soon anyways.

We've been in the home 8 months now, and parts of the floor are just beginniing to get Black mildew. Not too bad yet, but its noticeable, and I'd like to clean it.

I see these plastic gallon bottles in the home improvement stores, "wet & forget" was 1 brand I saw, but geez they are $10/jug. I don't own a pressure washer, and I think that would be overkill at this point. I'd like to avoid having to buy, or rent, a pressure washer, or costly chemicals.

Can't I just use some bleach diluted 90% w/ hot water, and a rigid broom, then hose it away? Would that harm the bronze finish on the screen? The painted floor? If I mistakingly splash some on the vinyl screen, will it damage the screen?

Do I really need the costly cleanser?
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Old 02-19-2019, 01:59 PM
 
Location: Lakewood Ranch, FL
5,320 posts, read 8,170,137 times
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Have you already tried a stream of water and a brush? Seems like that should be your starting point.
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Old 02-19-2019, 02:07 PM
 
2,787 posts, read 811,757 times
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beach....wash it down good with hose and nozzel

mop bucket of water, good glug of Clorox, good squirt of Dawn/Palmolive....scrub brush

..won't hurt anything
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Old 02-19-2019, 03:05 PM
 
120 posts, read 163,165 times
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Do you have a pressure washer? Use mild pressure and that should remove all the mildew. That's what we use on our lanai.
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Old 02-19-2019, 03:15 PM
 
Location: Ormond Beach, FL
1,353 posts, read 1,393,658 times
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You can use tile cleaner, same as you would use in a shower. Or you can get the power wash stuff. Either way will work.
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Old 02-19-2019, 03:24 PM
 
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Awesome tips. Thx all! Glad I dont have to buy the $10/jug stuff. My 3 car garage is already in need to organizing, so I'm trying to avoid buying a pressure washer.
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Old 02-19-2019, 08:44 PM
 
Location: Naples FL
602 posts, read 136,329 times
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Now our cleaning guy uses something he mixes up himself...it does smell like ammonia bleach to me our floor is like a coral stone paver but gets the same black mildewed stuff.
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Old 02-19-2019, 11:00 PM
 
1,620 posts, read 1,060,648 times
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Quote:
Originally Posted by Taksan View Post
Now our cleaning guy uses something he mixes up himself...it does smell like ammonia bleach to me our floor is like a coral stone paver but gets the same black mildewed stuff.

If your "cleaning guy" is mixing ammonia and bleach, he's a lunatic. I can't stress enough how much these two shouldn't be mixed. Ever. Please ensure these are not the two chemicals he is mixing.
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Old 02-20-2019, 04:47 PM
 
429 posts, read 706,018 times
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Quote:
Originally Posted by OpinionInOcala View Post
If your "cleaning guy" is mixing ammonia and bleach, he's a lunatic. I can't stress enough how much these two shouldn't be mixed. Ever. Please ensure these are not the two chemicals he is mixing.
Absolutely!!!!! Don't even use one right after the other. Ever. OpInOc is right on the money and literally deadly serious.

Dax
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Old 02-20-2019, 05:17 PM
 
6,250 posts, read 3,445,382 times
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Quote:
Originally Posted by Dax13 View Post
Absolutely!!!!! Don't even use one right after the other. Ever. OpInOc is right on the money and literally deadly serious.

Dax


Chlorine gas is what you get...just like they used in World War I.

With more ammonia you also get hydrazine, which was used as a toxic rocket fuel.
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