I have a path made of (what I'm guessing is) keystone slats that goes
from the sidewalk to my house door. When it rains the stones become
Is that the property of all stones or are some stones more slippery than
others? I'd like to stick with natural stone if possible.
Is it a new walk, I dont know what Keystone is but my old Limestone in
shade becomes moldy and slippery in a year or so, Muiatic acid and a
powerwash opened up the pores so I dont slip, now I just spray bleach
on it twice a year. Slate and moldy concrete is slipery when wet. If
its new and slippery , its the stone, but mold can grow quickly in
shady areas. Old slate can be like Ice, here some people have slate
sidewalks that are killers.
I presume that almost all slate id prepared by splitting along cleavage
planes, Purring such plates horizontally on a walk seems like a sure way
I have no idea if it will work, and it is bound to cost by but try to
pieces of slate into the ground with the cleavage plane vertical. That
way, as the slate crumbles from usage, new rough surface gets exposed.
Private Profit; Public Poop! Avoid collateral windfall!
The walk way / patio stones I've used are referred to as Arizona
The material is some what rough and not slippery when wet when the
light tan / beige stones are used; grey or blue / green / grey stones
tend to be less rough and more prone to being slippery.
As Ransley mentions, any kind of slime / mold growth can be VERY
Also drainage water can carry soil "fines" onto the stone & leave it
covered with a thin layer of slippery mud.
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