Pressure washing of concrete, any problems

Are there any problems to worry about when pressure washing concrete? Will concrete be damaged? Are chemicals, clorox, for example, something of concern?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Pressure washing concrete should not damage it. If it does, then the concrete was damaged in the first place. Keep acids off concrete, bleach is fine.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Really pay attention to the part where you're told not to leave the chemicals on the concrete until they dry ;->
I used one of the spinning rotary nozzles the last time I did my sidewalk. Worked a trick.

Best Regards,
Tim =
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
chuck wrote:

Addiction.
I rented one of the really powerful units to do my walks, which were all full of algae & were slippery when wet. The results were so dramatic that I'd doubt I'll go six months between rentals anymore.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Hi,
Clorox is chlorine and very high PPM of chlorine. Chlorine is not really dangerous to concrete but it leaves a white film on it if you don't get it all out. Believe it or not a good all purpose cleaner of anykind cuts the grease fairly good and is cheap to use and safe. Wear safety goggles!
work safe, candice
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Depending on why you're pressure washing, a light bleach solution is often used to kill algae and mildew. There are commercial cleaners available, check your local hardware store or Lowe's/Home Depot.
Jeff
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Chuck,
I've pressure washed dirty concrete paving and also dirty asbestos roof sheets. The pressure washing does remove a thin film of concrete or asbestos in my experience. Not a lot is removed probably, I just wouldn't do it too frequently. The wear finish surface for concrete is often quite thin and you might abrade it all away with the high pressure water.
Ross

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.