Cleaning an old deck

Torque454

New Member
I am having trouble cleaning my very own deck. By the looks of things, I am thinking that this deck must be older than god himself (figuratively speaking of course) tho I have only lived here two years. I've tried bleach, purple power, oxygen bleach, special "wood cleaners" from various places, mean green, simple green, and other things. There are green spots that look like algae and black spots that I have no idea what they are (kind of like the black spots you find around nails, but without any nails around.

I have gotten to the point of using high pressure and HOT water (I know, big no no, but its the only thing that has even remotely touched this deck). Now the deck is mostly clean but there is still the green and black spots. I am kind of at a loss of what to do now? I dont ordinarily clean wood because I havent had enough experience yet and I really dont want to experiment on customers wood surfaces.

I am kinda having trouble with the fence too. I can get it pretty clean with just pressure, all the grey comes off and the dirt/mud and algae but it doesnt seem to be real bright as if it was new wood. It does get its color back. However it turns grey again within a few months and on my front fence its even turned green with algae again.

What can I do about that? If I can get the wood brightened up, I can seal it and that should stop the grey (right?) but what about stopping the algae from coming back so quickly and how do you get it brightened up to begin with?


P.S. My uncle is wanting his deck cleaned and while I dont plan to charge him, I'd still like to do a good job. I am unsure of the condition of his deck, I know that my dad cleaned it with his toy power washer within the last couple of years and he is by no means an expert so I know there are spots on it where he stopped and started without feathering in and out.
 

Mark Wood

New Member
as far as the algea coming back so fast there are products out there that slow down algea growth. I use a product called M1 that works pretty good for me you can get it at home depot. it sounds like that Deck of yours was not properly sealed and maintained through its like so there may not be much you can do with it. Wood is tough somtimes since you cant use as much pressure. I mostly clean woood with chemicals and then rinse it. If they want it better than that they'll probly have to build a new deck.
 

CaroliProWash

New Member
I am having trouble cleaning my very own deck. By the looks of things, I am thinking that this deck must be older than god himself (figuratively speaking of course) tho I have only lived here two years. I've tried bleach, purple power, oxygen bleach, special "wood cleaners" from various places, mean green, simple green, and other things. There are green spots that look like algae and black spots that I have no idea what they are (kind of like the black spots you find around nails, but without any nails around.

I have gotten to the point of using high pressure and HOT water (I know, big no no, but its the only thing that has even remotely touched this deck). Now the deck is mostly clean but there is still the green and black spots. I am kind of at a loss of what to do now? I dont ordinarily clean wood because I havent had enough experience yet and I really dont want to experiment on customers wood surfaces.

I am kinda having trouble with the fence too. I can get it pretty clean with just pressure, all the grey comes off and the dirt/mud and algae but it doesnt seem to be real bright as if it was new wood. It does get its color back. However it turns grey again within a few months and on my front fence its even turned green with algae again.

What can I do about that? If I can get the wood brightened up, I can seal it and that should stop the grey (right?) but what about stopping the algae from coming back so quickly and how do you get it brightened up to begin with?


P.S. My uncle is wanting his deck cleaned and while I dont plan to charge him, I'd still like to do a good job. I am unsure of the condition of his deck, I know that my dad cleaned it with his toy power washer within the last couple of years and he is by no means an expert so I know there are spots on it where he stopped and started without feathering in and out.

Okay, now that I have picked myself up off the floor from fainting at everything you have done.........

I just hope you haven't totally obliterated all of the lignens or turned the thing to pulp with high pressure. If you haven't.....BE GENTLE from here on out. If you have - get a planer.

Wood restoration is not rocket science but there is an art and learning curve to producing beautiful work.

If you are experiencing immediate algae growth - you have a wetness problem somewhere other than the deck. Find it.

Graying is caused by UV and other God-related conditions. The wood is oxidized and all graying has to be removed and a good quality PIGMENTED stain/sealer applied.

You obviously have provided no oil to this wood (after beating it half to death) so a harsh chemical for removal is NOT needed. Clean the wood GENTLY with a quality percarbonate cleaner (Do not - I repeat - DO NOT MIX BLEACH WITH THIS). It is a neutral pH and won't hurt the wood or you.

This will not brighten the wood - it's only cleaning it. You may want to follow this process with a brightener just to give the wood a more even looking appearance. This chemical is going to be an oxalic acid, a citric acid or a blend of the two. There can be health hazards associated with oxalic so please use proper ppe.

Rinse, rinse, rinse and then rinse again is OUR credo. Others do not rinse. Sometimes rinsing is not what the stain wants so when you make a decision on what stain to use, check with others to see what they suggest. We ALWAYS rinse - seriously, about 4 times.

Let the wood dry for a good 24-48 hours depending on the stain/sealer you will be applying.

Stain away - let it cure for about a day before putting anything back on it. Load it up and enjoy.

If you have any questions that weren't addressed - just call me.
 

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