Stone Retaining Walls: The Right Way To Clean Them


Some people simply do not comprehend what prize an aged stone retaining walls is on their property. Instead of letting this piece of background fall, it should be maintained. A thorough cleaning of a classic stone retaining wall add beauty to your own yard and landscape can deliver the wall back alive and when again.

Old stone walls have years of mold and carbon black accumulation. These blots can be tough to remove depending on how deep the mold and carbon black has penetrated. There may also be groundcover rooting into the wall or fungus and alga growth, as well vines. So what to do? Well, you do recognize these parasites need to go! Thus let us get the pressure washer out for cleanup and prepare!

Use a moderate size pressure washer. Blow out all the joints with a high-pressure spray and the worst thing you could possibly do at this point would be to start the pressure washer!

In addition, if you start to clean the wall with no appropriate soaking, you may merely drive the area soot deeper into the walls pores by wicking actions making it harder to clean… so hold your horses! No… The approach that I’m going to describe to you is softer and a little more subtle.

Ok. Now start the cleaning procedure by first saturating the wall. Gently washing down the wall with a wide-angle nozzle achieves this. Stand straight back from your wall possibly 3′ – 4′ and let the water circulation over, around and run down the face of the wall.

Now your wall is thoroughly soaked that will allow the detergent to penetrate deeper into the wall system lifting the soot and grime away. Additionally, the detergent will be kept by a sodden wall from becoming dry prematurely enabling it considerable time to perform its’ operate.

The trick would be to use a commercial grade degreaser. Now implement a concentrated heavy degreaser purchase from a commercial strain cleaning supply company. Do not dilute. Pour the detergent directly from the bucket into a garden sprayer and begin to spray on the wall. Make sure that every inch of wall is covered and try and keep a ‘moist look’ as you go. This degreaser will cost a few dollars but this really is not the spot to scrimp. If you desire the wall cleaned purchase the degreaser… simple.

After about 10 – 15 minutes the wall will begin to flip darkish amber than a dirty brown. You’ll see streaks of filth dripping down the encounter of the wall. The wall will appear awful and you will be concerned that you screw up it! That is great. When you begin to feel that it’s a hopeless cause and are prepared to give up, you will know that your work is nearly done!

Since the degreaser has already established a chance to work by lifting the filth, it’s time to agitate it like a washer. Using your 15-degree nozzle begin to strike against the wall with rapid, random blows and from top to bottom. You aren’t looking to saturate the wall this time. Move up and down the wall, as you see the soap suds appearing from the pressure of the spray and continue along its’ length.


You may do this a number of times along the length of the wall to get the cleansing that is deepest possible. This agitation will dilute the degreaser to your lower viscosity and create soap bubbles that may lift the surface soot and filth away.

Ok… now you can blow it away! You can now proceed to the final step of pressure washing the wall after the degreaser was agitated. Beginning where you first implemented the degreaser you put your wand about 12″ – 16″ away in the face of the wall.

You clean by viewing the soot lift on the wall as your nozzle is moved by you from joint to joint and from stone to stone. As you continue down the wall you will see the soot and filth lift away. Then agitate again, to keep it wet until you can reach that part if your section further along seems like it is drying out too fast.

You will be amazed by how fast years of mold, grime, soot and debris wash away. Another application may be required by areas with stubborn stains.

You may step back in astonishment when you might have finished,! That aged dingy wall will look refreshed and new and your job is complete. After all that hard work sit back and appreciate the attractiveness your restored wall provides… after all you deserve to relax!