Concrete walls

Old Apr 29th 2022, 2:49 pm
  #1  
BE Forum Addict
Thread Starter
 
Joined: Dec 2009
Posts: 2,184
FenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond repute
Default Concrete walls

We have two concrete walls, about 0.5m high at front of property. Both stained from grime, whatnot, etc. Tried to hand scrub but not effective so got out my karcher jet wash. Had to use one attachment which focuses water pressure on a very small area. So far one side of a wall is looking alot better. But once both walls jet washed should I apply a protective coating?
Tried to upload photos showing how bad it looks and the jet washed wall but can't upload.
FenTiger is offline  
Old Apr 29th 2022, 3:11 pm
  #2  
 
Pulaski's Avatar
 
Joined: Dec 2001
Location: Dixie, ex UK
Posts: 50,343
Pulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond reputePulaski has a reputation beyond repute
Default Re: Concrete walls

IMO any coating that traps moisture in the wall is just going to invite frost damage to the surface.

If the grime you're scrubbing off is mold and algae you could spray it with dilute bleach to discourage regrowth, but you'd probably need to reapply it a couple of times each year,
Pulaski is offline  
Old Apr 29th 2022, 3:23 pm
  #3  
BE Forum Addict
Thread Starter
 
Joined: Dec 2009
Posts: 2,184
FenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond repute
Default Re: Concrete walls

Originally Posted by Pulaski View Post
IMO any coating that traps moisture in the wall is just going to invite frost damage to the surface.

If the grime you're scrubbing off is mold and algae you could spray it with dilute bleach to discourage regrowth, but you'd probably need to reapply it a couple of times each year,
Ah, never thought to use diluted bleach. Will try tomorrow. I bought Karcher patio cleaner liquid but not effective. I actually tried hot water, washing up liquid and a scrubbing brush but it didn't budge!
Last time I scrubbed "painted" walls was in UK. It didn't end well. After a hard day of scrubbing "painted " walls I had one beer too many and left my dog outside. Fell asleep! 2am a police officer was standing over me. I thought WTF .... neighbours complained my dog had been barking from midnight to 2am! Neighbours thought I was dead! My wife was upstairs with our other senior dog! Police smashed our conservatory door .... cost £2,000 to replace because it was Easter weekend. Luckily claimed from insurance.
FenTiger is offline  
Old Apr 30th 2022, 4:37 am
  #4  
BE Enthusiast
 
Joined: Jul 2014
Location: Hawley
Posts: 496
Jack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond reputeJack_Russells4ever has a reputation beyond repute
Default Re: Concrete walls

+1 on the diluted bleach if it is algae, It does need to be done a couple times a year. If it is a paintable surface you may be able to find an algae resistant paint but if it does not allow the wall to breath properly I wouldn't use it.
Jack_Russells4ever is offline  
Old Apr 30th 2022, 6:41 am
  #5  
BE Forum Addict
Thread Starter
 
Joined: Dec 2009
Posts: 2,184
FenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond reputeFenTiger has a reputation beyond repute
Default Re: Concrete walls

Originally Posted by Jack_Russells4ever View Post
+1 on the diluted bleach if it is algae, It does need to be done a couple times a year. If it is a paintable surface you may be able to find an algae resistant paint but if it does not allow the wall to breath properly I wouldn't use it.
I learnt a harsh lesson in UK using paint which doesn't allow the wall to breathe.
FenTiger is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.