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Clean Lichen off sandstone

Standard Toaster · 2017-04-03 10:00:42

I have what I think is lichen on sandstone around the house. Sills and quoins are affected. I was hoping to clean these back to their former glory without damagaing them. There's a few places where the lichen has not really affected the stone and it looks great. I'm no expert but I *think* the stone is sandstone. It's…

03-04-2017 10:00AM

#1

Standard Toaster

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I have what I think is lichen on sandstone around the house.
Sills and quoins are affected.

I was hoping to clean these back to their former glory without damagaing them. There's a few places where the lichen has not really affected the stone and it looks great.

I'm no expert but I *think* the stone is sandstone. It's seems very easily damaged so powerhose or anything abrasive is a no-no.

The plan (once the weather settles!) is to clean and then seal them up with say Thompson's Water Seal or similar.

A couple of pics attacted, any advice appreciated.

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Comments

#2 03-04-2017 08:22PM

Calahonda52

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A lot of unnecessary work in my opinion, that will need to be redone.
Anything other than light sandblasting will leave a stain which will look woeful

“I can’t pay my staff or mortgage with instagram likes”.

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#3 03-04-2017 08:31PM

_Brian

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This is how it's supposed to weather.

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#4 12-04-2017 05:33PM

Standard Toaster

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Power washer doing the job. They look brandnew.
Treating with Thompson's water seal afterwards.

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