I have been lurking on this forum for quite some time and attempted to do my fair amount of research, I know there is much more to learn, and look forward to it. My current setup is much less than desired but with college student budget its what funds will allow. I am running a mobile 4000psi 4gpm coldwash unit that is faucet driven only. I have cleaned a couple concrete walks, driveways and siding at my duplex, all with low pressure and downstreamed 1:10 mix of 6% SH bleach and splash of dawn and had successful results. I plan on purchasing some Simple cherry very soon. but as for now I am only using my resources from local store. Prior to today I had never washed or stained any deck. NOW FOR THE QUESTION
A friend let me use his deck as a test today. I have a local sherwin williams and spoke with the rep today who seemed so so on his knowledge. My goal today was just to wash the deck using rinse on the Pressure washer and then scrubbing with Sherwins deck wash. I applied the deckwash covering the 250sq through a hand pump spray and scrubbed throughly. after letting it set for 15 mins I came back and rinsed off using minimal pressure. I was not satisfied with the results as you will see in the following picutures.
Next step, I went back and spoke with the rep and he suggested Oxalic acid as a bleaching agent. I mixed it as directed to so many scoops per gallon of water and then applied and scrubbed. It defintely lightened the deck but I still have a green and black tint to much of the deck. while I know the deck is still wet I am curious what the end result will be if I apply stain to this deck. I know you can only polish a turd so much and this deck as set untreated for years. IS THERE ANYTHING FURTHER I CAN DO BEFORE APPLYING STAIN? Thank you for any suggestions or help.
Here are several pictures of before and after. for some reason the step brightened way more than the rest of the deck maybe it is just newer.
I have been lurking on this forum for quite some time and attempted to do my fair amount of research, I know there is much more to learn, and look forward to it. My current setup is much less than desired but with college student budget its what funds will allow. I am running a mobile 4000psi 4gpm coldwash unit that is faucet driven only. I have cleaned a couple concrete walks, driveways and siding at my duplex, all with low pressure and downstreamed 1:10 mix of 6% SH bleach and splash of dawn and had successful results. I plan on purchasing some Simple cherry very soon. but as for now I am only using my resources from local store. Prior to today I had never washed or stained any deck. NOW FOR THE QUESTION
A friend let me use his deck as a test today. I have a local sherwin williams and spoke with the rep today who seemed so so on his knowledge. My goal today was just to wash the deck using rinse on the Pressure washer and then scrubbing with Sherwins deck wash. I applied the deckwash covering the 250sq through a hand pump spray and scrubbed throughly. after letting it set for 15 mins I came back and rinsed off using minimal pressure. I was not satisfied with the results as you will see in the following picutures.
Next step, I went back and spoke with the rep and he suggested Oxalic acid as a bleaching agent. I mixed it as directed to so many scoops per gallon of water and then applied and scrubbed. It defintely lightened the deck but I still have a green and black tint to much of the deck. while I know the deck is still wet I am curious what the end result will be if I apply stain to this deck. I know you can only polish a turd so much and this deck as set untreated for years. IS THERE ANYTHING FURTHER I CAN DO BEFORE APPLYING STAIN? Thank you for any suggestions or help.
Here are several pictures of before and after. for some reason the step brightened way more than the rest of the deck maybe it is just newer.
BEFORE
AFTER RINSE OF DEBRIS
AFTER DECKWASH
AFTER OXALIC ACID MIX
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