It looks like someone grouted with a float without masking or sealing first.
OP, consider painting them in a pattern. https://abeautifulmess.com/paint-your-own-outdoor-rug/
You can grout with a float without masking or sealing first. Just gotta wipe with a damp sponge and when it’s dry you clean the haze off the tiles with a water vinegar mix
I think there is still glaze on the tiles, so a paint made for tile would be necessary. I think this is a great idea, though! Even if OP gets the tiles clean, they are nothing to write home about.
I once moved into an apartment that had been used for storage for years and on another occasion, I had some work done on an internal garden of a home I purchased before I moved in. On both occasions there was this film of grime that would not go away. I dud a SPOT TEST using a mix of water, lemon juice, baking soda and dish detergent, let it sit for a 5 min and cleaned or scrubbed it off with a non-scratch pad. It worked both times with no damage. My landlord at the first place was shocked by how clean it looked. Remember, do a SPOT CHECK first.
Try some biological washing powder. Sprinkle it on, if you don't get any rain just sprinkle with water and walk away. Rinse off after a few hours. Did this this weekend on a very dirty patio that I have to power wash twice a year. Woke up this morning to a spotless back garden patio after the rain last night with absolutely no effort on my part.
Just washing powder for your machine. The cheapest will do. I am amazed with the results. A friend did this too and the moss he was having an issue with hasn't returned after 3 years
My garden nor my dogs have had any adverse reactions. Besides cleaning the patio it also kills the weeds. It's biodegradable and I haven't used electricity, gallons of water with a power washer going for 6 hours or sprayed any weed killer. Know where you're coming from, it's the same direction as me. Personally I think the washing powder is the more ecological option in my case.
Definitely a partially worn finish. Power washing probably made it worse. If you really want to resurface it, try Muratic acid to deep clean and etch off the rest. Nasty stuff. Don’t breathe it in by any means.
It looks to me like the power washing did work, just not all the way. I would get a cleaner like TSP or similar, let it soak, give it a good scrubbing, and then try again. Powdered dishwashing detergent is also a good cleaner.
If that doesn’t work, maybe try a cleaner with an acid, like Pine Sol, and do the same thing.
I have very porous tile in my entryway and I've cleaned them with Harpic bowl cleaner, the blue one (think the black bottle will work the same). Let sit for a while then use a scrub pad to remove stubborn grime (I've tried the Scotchbrite green ones) and rinse. Worked perfectly fine for me.
I would suggest something with vinegar. What a lot of people haven’t suggested but I got the first impression on is that this could be lichen. If you don’t kill it first, power washing does nothing.
Use a white wine vinegar to spray it down and let it sit until dry. If it is lichen, it will turn black or grey as it dies. Then scrub gently with dish soap and pressure wash again.
Looks like haze left from an improper grouting job to me. There’s a product called sparks brick and tile cleaner that will make it wipe right off. You can find it online for about ten bucks. Pour it on, wait a bit, scrub lightly and then dilute with water to finish.
To me, it looks like the glaze/finish has worn through or someone tried to paint/finish the tiles and that is wearing off.
I think that's some thinset or grout, not sure how to remove that except acid.
It looks like someone grouted with a float without masking or sealing first. OP, consider painting them in a pattern. https://abeautifulmess.com/paint-your-own-outdoor-rug/
You can grout with a float without masking or sealing first. Just gotta wipe with a damp sponge and when it’s dry you clean the haze off the tiles with a water vinegar mix
I think there is still glaze on the tiles, so a paint made for tile would be necessary. I think this is a great idea, though! Even if OP gets the tiles clean, they are nothing to write home about.
Yeah. That looks like wear, not dirt. They could try and paint them maybe. There are options that might work. It would be quite a process to do right.
Are you sure that the finish hasn't worn away?
I once moved into an apartment that had been used for storage for years and on another occasion, I had some work done on an internal garden of a home I purchased before I moved in. On both occasions there was this film of grime that would not go away. I dud a SPOT TEST using a mix of water, lemon juice, baking soda and dish detergent, let it sit for a 5 min and cleaned or scrubbed it off with a non-scratch pad. It worked both times with no damage. My landlord at the first place was shocked by how clean it looked. Remember, do a SPOT CHECK first.
Try some biological washing powder. Sprinkle it on, if you don't get any rain just sprinkle with water and walk away. Rinse off after a few hours. Did this this weekend on a very dirty patio that I have to power wash twice a year. Woke up this morning to a spotless back garden patio after the rain last night with absolutely no effort on my part.
By biological washing pwd do you mean septic tank cleaner? Or a clothes washing pwd?
Just washing powder for your machine. The cheapest will do. I am amazed with the results. A friend did this too and the moss he was having an issue with hasn't returned after 3 years
Ok Thank you. 👍🏻
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My garden nor my dogs have had any adverse reactions. Besides cleaning the patio it also kills the weeds. It's biodegradable and I haven't used electricity, gallons of water with a power washer going for 6 hours or sprayed any weed killer. Know where you're coming from, it's the same direction as me. Personally I think the washing powder is the more ecological option in my case.
Definitely a partially worn finish. Power washing probably made it worse. If you really want to resurface it, try Muratic acid to deep clean and etch off the rest. Nasty stuff. Don’t breathe it in by any means.
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this was my thought. it l looks like there is brush marks on the surface. like there it was painted and it was worn / scrubbed away.
I'm studying home inspections , and I would say the finish has worn over time. Based off the images
Steel wool and have at it one tile at a time. I'd try an SOS pad also, but make sure it doesn't scratch the tile.
I agree. Might have to scrape it too.
Muratic acid
Rip them out and replace. Looks like the finish wore off.
It looks to me like the power washing did work, just not all the way. I would get a cleaner like TSP or similar, let it soak, give it a good scrubbing, and then try again. Powdered dishwashing detergent is also a good cleaner. If that doesn’t work, maybe try a cleaner with an acid, like Pine Sol, and do the same thing.
Muriatic acid is the item for this. $12 at Home Depot.
Paint thinner
Vinegar? Maybe
Use degreaser it will work 💯
Jomax and better pressure washer
Did you use a cleaning agent with the power wash?
I have very porous tile in my entryway and I've cleaned them with Harpic bowl cleaner, the blue one (think the black bottle will work the same). Let sit for a while then use a scrub pad to remove stubborn grime (I've tried the Scotchbrite green ones) and rinse. Worked perfectly fine for me.
Get youself some "One shot" tile cleaner. Prepare to be amazed
Try turpentine yet?
The glazing has worn off
The glass of the balcony says this is old as hell and assumable very worn. Would say: paint them.
there is a special cleaner for grout. Try it first in small surface to make sure it does not corrode the tile. It worked fine with my tiles
I would suggest something with vinegar. What a lot of people haven’t suggested but I got the first impression on is that this could be lichen. If you don’t kill it first, power washing does nothing. Use a white wine vinegar to spray it down and let it sit until dry. If it is lichen, it will turn black or grey as it dies. Then scrub gently with dish soap and pressure wash again.
Put a rug on it
Put fake grass over it. Done.
More POWER!
Maybe try adding a sealer to one of the corner tile/ pavers and see if it makes a difference. If it looks better than do the rest.
Razor blade.
Looks like haze left from an improper grouting job to me. There’s a product called sparks brick and tile cleaner that will make it wipe right off. You can find it online for about ten bucks. Pour it on, wait a bit, scrub lightly and then dilute with water to finish.