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-   -   Green 'dirt' on my vinyl siding... (

KerryAll 05-19-2012 10:05 AM

Green 'dirt' on my vinyl siding...
I have a detached garage, with pale yellow vinyl siding. The north side doesn't get much sun and it almost looks like algae growing on it. Any suggestions to the best way to clean it off?

kok328 05-19-2012 10:23 AM

Mild soap and water. Powerwasher on low setting. You can also visit your local big box store, they will have some chemicals designed to remove algae.
You don't want to use too harsh of a chemical or you may stain/bleach the siding.
I've used a product call "Mildew Check" and seems to work well and leave a protective coating behind to prevent reoccurring algae growth.

KerryAll 05-19-2012 10:43 AM

Thanks-I'll have a look for that product.

nealtw 05-19-2012 11:18 AM

When cleaning vinyl start at the bottom and work up, you get less streeking.

woodchuck 05-20-2012 07:35 AM

In the good old days they would have lead mixed in to prevent the mildew.

rick1953fowler 05-22-2012 08:03 PM

Powering washing is what I would recommend.

davida007 05-29-2012 01:50 AM

You can power wash it with detergent which is made specifically for vinyl siding. Use a low pressure and try to wash the siding head on as this will decrease the amount of water which goes behind the siding

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