High Pressure Pressure Washers For Moss/Algae On Driveway ?

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  #1  
Old 08-24-14, 09:20 AM
R
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High Pressure Pressure Washers For Moss/Algae On Driveway ?

Hello,

Lots of Forums where, I guess, this could be posted.
If you think there's a better one, please let me know.

Have an Asphalt driveway with lots and lots of green Moss (algae ?) on
it.

Will try some more chemicals to remove, also Vinegar, but was wondering about a suggestion to use one of those high-pressure Pressure Washers ?
I could easily rent one.

The stuff seems to be adhered to the Asphalt very tightly.

But i have no experience with Pressure Washers.

Do you think they are powerful enough to strip the moss/algae away ?
Worth a try ?

Thanks,
Bob
 
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Old 08-24-14, 09:37 AM
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A bleach/water mixture along with scrubbing it with an old broom should work. Pressure washers are great but if you use too much pressure and/or the wrong tip too close to the substrate - you can cause damage! I'd use a combination of bleach water and a pressure washer.
 
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Old 08-24-14, 12:10 PM
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A pressure washer with an adjustable fan nozzle is best. You can adjust the width of the fan and the wider it is the lower the pressure on any particular point on the asphalt. Try it at the widest width and adjust narrower until the moss is blown off the entire width of the fan. Don't get the nozzle any closer than needed to blow the crap away and you will be fine.
 
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Old 08-24-14, 01:31 PM
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I'm not a fan of the adjustable nozzles, I'd rather use the right size tip. While a red tip has the most force, it's more apt to cause damage and uneven cleaning. The wider the tip, the less force it will have making it easier to control. I'd use a white tip unless that wasn't strong enough for the job and I needed to step up to the narrower yellow tip.

A turbo nozzle would also be a good choice. It isn't a wide fan but it rotates the water making it more effective.
 
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