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How to clean a concrete walkway Walter R. 03-05-2008
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Posted by Joseph Meehan on March 5, 2008, 8:29 pm
>> � � I agree with Bob. �The bleach can kill it, but it will still need
to
>> be
>> removed and that is the job of the power washer.
>>
>> � � When it comes to power washers it is all about BOTH the PSI �-and-
>> the
>> Gallons per minute.
>>
...
>
> too much pressure can roughen concrete, creating permanent marks and
> easier mold re growth.....
>
> you have been warned

Very true. Most powerful machines have a means of reducing the pressure
or you can simply stand back a little more. But if the machine does not
have what it takes to start with, there is nothing you can do. Frankly most
people only look at the psi and never give a though to the volume. The real
point I was trying to make was to be sure to get enough pressure and don't
ignore the volume as most people tend to. Most consumer machines have OK
pressure and poor volume.

I should have been more clear with my original answer.

--
Joseph Meehan

Dia 's Muire duit






Posted by Walter R. on March 5, 2008, 8:07 pm
Since most posters suggest pressure washing, would my 1800 psi 1.7 Gal/m
washer hack it? Might be worth a try.

Otherwise, I guess I could stain or paint the concrete to make the blotches
look more uniform.

--
Walter
www.rationality.net
-
> The 4' wide concrete walkway to my front door has become stained and
> unsightly. Part algae, part burn marks from burning palm seeds dropping on
> it, part just a discoloration of unknown origin.
>
> If I use Clorox bleach on the concrete, that would be as starting point to
> clean it up. My question is, will chlorine harm the concrete?
>
> --
> Walter
> www.rationality.net
> -
>



--
Posted via a free Usenet account from http://www.teranews.com


Posted by hallerb@aol.com on March 5, 2008, 8:57 pm

> Otherwise, I guess I could stain or paint the concrete to make the blotches
look more uniform.
>

never ever paint concrete, its a slippery every year maintence
issue......

whatever you do the seeds, which i am not familiar with can do it
again.

some things are better ignored because the possible fixes arent wort
the money time hassle and dont last

Posted by Norminn on March 5, 2008, 10:07 pm
Walter R. wrote:

>Since most posters suggest pressure washing, would my 1800 psi 1.7 Gal/m
>washer hack it? Might be worth a try.
>
>Otherwise, I guess I could stain or paint the concrete to make the blotches
>look more uniform.
>
>
>
You probably can get as clean with bleach as you can with pressure
washing. Trouble with concrete is that you
can write your name on it with the pressure washer, eroding the
concrete, and not get all the stains. I would try
scrubbing with 1:10 bleach/water, or just hose it on with a hose end
sprayer. Bleach doesn't bother our plants, as
I have used bleach on the outside of our condo, but I would rinse area
well. For the burn marks, if there aren't too many, you might try
some acryllic paint to camouflage them........I did that on a concrete
deck in our atrium after a neighbor
got walnut stain all over it. It is sheltered and not a lot of sun or
weather, but it stays on concrete. I used
small bottles of craft paint and just mixed it to get the color right.

Posted by Joseph Meehan on March 6, 2008, 9:29 am
Stain maybe if you get that concrete really really clean first. Don't
paint. The only painting of concrete I would recommend is the cement floor
of a garage and then only if you are ready to do the intense prep that it
requires for a good job and if you buy the expensive top quality true two
part epoxy materials.

--
Joseph Meehan

Dia 's Muire duit



> Since most posters suggest pressure washing, would my 1800 psi 1.7 Gal/m
> washer hack it? Might be worth a try.
>
> Otherwise, I guess I could stain or paint the concrete to make the
> blotches look more uniform.
>
> --
> Walter
> www.rationality.net
> -
>> The 4' wide concrete walkway to my front door has become stained and
>> unsightly. Part algae, part burn marks from burning palm seeds dropping
>> on it, part just a discoloration of unknown origin.
>>
>> If I use Clorox bleach on the concrete, that would be as starting point
>> to clean it up. My question is, will chlorine harm the concrete?
>>
>> --
>> Walter
>> www.rationality.net
>> -
>>
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>

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