Recommend how to keep black algae out of travertine deck

[tradewinds]

I wash my limestone/travertine deck with 0.8 gal water + 0.2 gal 10% chlorine + 2oz dish washing liquid as the surfactant.

Is there a better wash that will also get out the black algae in the crevices?

 

[nick.s]

I would recommend hiring a pro with a hot water pressure surface cleaner. The soft wash with bleach might not be enough to break into the black algae. Steps below:

1. Pre treat with SH and surfactant
2. Pressure clean with high PSI and hot water
3. Post clean soak with SH again without surfactant
4. Seal with a good water based paver sealer like this Ure-Seal H₂O - Clear Urethane Sealer and add anti-slip beads if needed (Do not seal with solvent based in Florida)

Depending on where you live in FL these guys might be able to help Paver Sealing experts. #1 rated company

 

[tradewinds]

I would recommend hiring a pro with a hot water pressure surface cleaner. The soft wash with bleach might not be enough to break into the black algae. Steps below:

1. Pre treat with SH and surfactant
2. Pressure clean with high PSI and hot water
3. Post clean soak with SH again without surfactant
4. Seal with a good water based paver sealer like this Ure-Seal H₂O - Clear Urethane Sealer and add anti-slip beads if needed (Do not seal with solvent based in Florida)

Depending on where you live in FL these guys might be able to help Paver Sealing experts. #1 rated company

Thanks, unfortunately they do not service in my county/area.

Is this a good choice:

Amazon.com

 

[nick.s]

Thanks, unfortunately they do not service in my county/area.

Is this a good choice:

Amazon.com

That is a really good sealer but meant more for counter tops. It would be unbelievably expensive to buy a few gallons of that for a pool deck. Sherwin Williams has a decent water based sealer but not nearly as good as Ure-Seal H&C ClariShield Water-Based Natural Look Sealer | SherwinWilliams