Stubborn moss on walkway
#1
05-10-20, 08:25 PM
Stubborn moss on walkway
I have stubborn moss on the walk way to my front steps and on my travertine patio that surrounds my pool. For the walkway, I tried using a hard brush with a bleach solution that is taking a long way to slowly destroy the moss. Is there a faster way? I don't have much on the travertine patio so I can do that by hand but how do I handle that long term? Can I brush fine sand between the tiles? Or will that scratch the patio?
#3
05-11-20, 05:46 AM
Group Moderator
A strong chlorine solution will kill moss. You can also use a solution of iron sulphate (a plant fertilizer) but at higher concentration it may give your stones a slight rust stain. The moss will turn white when hit with either solution. Then you can pressure wash to remove it. You will need to re-apply occasionally as the moss tries to come back, but once or twice a year is usually enough.
#4
05-15-20, 07:50 PM
I can't use Chlorine on the travertine but I can use the power washer. To prevent weeds/moss/etc, should I lay down a fine sand within the gaps of the stone?
#5
05-16-20, 04:57 AM
Group Moderator
Sand will not do anything to block or stop moss. It actually promotes moss growth which is why you have it growing in only the joints. I know you want to avoid an acid but chlorine is a base (pH 11). Keep in mind that this is not a kitchen floor getting daily or weekly cleaning. This would be a once or twice a year thing and with a sprayer you can apply it to only the joints. Other than that you're left with mechanical removal like pressure washing or a lot of time on your hands & knees scraping it out my hand.
#7
05-16-20, 07:51 PM
Power washer took care of moss and made me a black mess. After all cleaned up, you can see a ton of gaps in the pavers. I think it still looks better than the green.
#8
06-02-20, 07:56 PM
Eh. Ton of missing areas due to not having a wider spread nozzle. I got a new 2000PSI electric washer. Should I be concerned about damage and do a test area? Or is 2000PSI on pavers not a concern?
#9
06-03-20, 05:48 AM
Group Moderator
The width of the tip and how far you hold it from the surface determines how strong the stream is. You may have to get pretty close with your pressure washer to get all the moss out. If you are missing areas then you just need to go back and hit them so the walkway has a more uniform appearance.
Damage is always a possibility. Most commonly it will be to the sand joint between pavers. With heavy growth like you've got at least some of the sand between stones will have to be blasted away to get the moss. After it's all clean to your liking then you can apply new sand to the joints.
Damage is always a possibility. Most commonly it will be to the sand joint between pavers. With heavy growth like you've got at least some of the sand between stones will have to be blasted away to get the moss. After it's all clean to your liking then you can apply new sand to the joints.
#10
06-03-20, 07:08 PM
There are some gaps that seem a bit too big for paver sand (e.g. https://www.homedepot.com/p/SAKRETE-...0004/202070568).
