Moss and Mold

[BrettGC]

We're having a major moss and mould issue on our driveway right now.  It's a perfect environment for them, no sun at all and will all the rain we've been having lately it's thriving. 

I don't really want to buy a pressure cleaner but we need to get rid of it.  It's at a point where it's dangerously slippery even when it's dry. 

We've tried scrubbing it down with stiff brooms and bleach but it came back a couple of weeks later. The only thing I can think of that may help is some kind of defoliant left for a few hours then another scrub.  I realise we have to kill the microscopic spores but not sure how to.  

Here's a couple of pictures of what it's like right now.  

Yes, we are planning on replacing the concrete in the entire area later this year but in the meantime....

 

[GeoffH]

Bleach will kill mold that it comes into contact with but it may not penetrate to the base of the mold, try adding some detergent to your mixture (preferably liquid).

It will act as a wicking agent allowing the bleach to penetrate better.

 

NB... don't breath the fumes.

Edited February 1, 2023 by GeoffH

[BrettGC]

2 minutes ago, GeoffH said:

Bleach will kill mold that it comes into contact with but it may not penetrate to the base of the mold, try adding some detergent to your mixture (preferably liquid).

It will act as a wicking agent allowing the bleach to penetrate better.

Will that work for the moss as well?  It's what's making it slippery even when dry. 

[Possum]

Diluted vinegar and water works also. Turns yellow, dies and can be scrubbed away. Diluted muriatic acid does a fast number on it if you're really mad at it.

[OnMyWay]

5 hours ago, BrettGC said:

I don't really want to buy a pressure cleaner

My pressure washer won't stay running.  I'm not sure why.  I'm de-pressured.  I miss her so much.  

 

[GeoffH]

10 hours ago, BrettGC said:

Will that work for the moss as well?  It's what's making it slippery even when dry. 

Are you sure it’s moss?  It could be green mold?  Not sure what kills moss…

[Mike J]

7 hours ago, OnMyWay said:

My pressure washer won't stay running.  I'm not sure why.  I'm de-pressured.  I miss her so much.  

Mine also stopped working just a couple days ago, no pressure at all.  Have not tried taking it apart yet so not sure why it stopped.

[BrettGC]

7 hours ago, OnMyWay said:

My pressure washer won't stay running.  I'm not sure why.  I'm de-pressured.  I miss her so much.  

 

 

21 minutes ago, Mike J said:

Mine also stopped working just a couple days ago, no pressure at all.  Have not tried taking it apart yet so not sure why it stopped.

What brand did you guys buy? So I know not to buy one in the event I change my mind 

[Kingpin]

1 hour ago, GeoffH said:

Not sure what kills moss…

Bleach kills everything, including moss.

The problem is that it will eventually return, especially with all this rainy weather.

[Mike J]

12 minutes ago, BrettGC said:

 

What brand did you guys buy? So I know not to buy one in the event I change my mind 

Mine worked great until it didn't.