Red Brick Patio

T

Tim Smith

Member
Red Brick Patio - Dirt, grime, black spots, mold, mildew.

Would a percarbonate base cleaner work?

What cleaner would you suggest?

Should I neutralize with an oxalic acid?

Thanks
 
Tim, I have cleaned brick for years and Ive never had much luck with the precarbonate cleaners on the brick without alot of mechanical work such as brushing with a stiff bristled brush. I use a bleach mix. One gallon bleach to 2 gallons water then downstream it on and let dwell for 5 mins but keep it wet with solution. Then I follow it with a good alkaline soap like you would use to clean houses or trucks. Allow that to dwell 5 mins then begin pressure washing with either surface cleaner or wand and you should have pretty good results. If the mold doesn't die apply a stronger mix up to 100% bleach downstreamed onto the suface but remember to rinse very very well.
 
Brick

Tim:

Looks like only the Smith Boys are on this one :p

Might want to give Steve a call and try his House Helper, which is a sodium hypochlorite which did a fine job for me on a brick patio.

http://www.rowlettpressure.com/cleaners/index.html

Some Things I like about sodium hypochlorite are:
No worry about killing the plants
Don't have to worry about the Aluminum and Paint issues.

Good Luck....

Let us know how it turns out and what you used...
 
Thanks

I'm doing the job this afternoon - I'll let you know how it goes.

I'm going to us the following mixture:

5gal bucket- two gal of bleach, 1/2 gal of house soap, 2 1/2 gal of water.

Spray on with surflo pump - let set for 10 minutes - Wash
 
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