Welcome, Guest. Please Login or Register
Welcome To Ask The Trades!
Mar 28th, 2024, 9:23am
Quote: Since light travels faster than sound, some people appear bright until you hear them speak


Page Index Toggle Pages: 1
Send Topic Print
White powder (effluorescence?) on walls (Read 2765 times)
Zac
Junior Member
**
Offline

Ask The Trades
Posts: 8


Total Thanks: 0
For This Post: 0



White powder (effluorescence?) on walls
Apr 22nd, 2017, 7:37pm
 
About 5 weeks ago I had my kitchen reskimmed but I haven't redecorated yet. Near the kitchen sink, behind the washing machine, a couple of patches of powdery white deposits (effluorescence?) have appeared, also a patch near the kitchen door (both patches on outside walls). I'm now wondering if I need to repoint the brickwork outside to stop dampness. There are also effluorescence remover products on the market but I feel that they would not really solve the problem. Any advice welcome.
Back to top
 
Thank User For This Post  
IP Logged
 
woodsmith
Global Moderator
Trade Member
Author
*****
Offline


Posts: 4395


Total Thanks: 135
For This Post: 1


Gender: male

Trade: Joiner

Re: White powder (effluorescence?) on walls
Reply #1 - Apr 23rd, 2017, 8:04am
 
How old is the house, and do you know how the walls are constructed?
Back to top
 
Thank User For This Post View members image gallery  
IP Logged
 
Zac
Junior Member
**
Offline

Ask The Trades
Posts: 8


Total Thanks: 0
For This Post: 0



Re: White powder (effluorescence?) on walls
Reply #2 - Apr 24th, 2017, 12:31am
 
1920s/30s. Double brick, no cavity wall.
Back to top
 
Thank User For This Post  
IP Logged
 
woodsmith
Global Moderator
Trade Member
Author
*****
Offline


Posts: 4395


Total Thanks: 135
For This Post: 1


Gender: male

Trade: Joiner

Re: White powder (effluorescence?) on walls
Reply #3 - Apr 24th, 2017, 10:28pm
 
Sounds like you do need to check your pointing and look for any signs of water getting onto the brickwork from faulty guttering for instance. However it may just be salts in the brickwork,or mortar, that have been activated by the wet plaster and once you clear them off they won't reappear.
Back to top
 
Thank User For This Post View members image gallery  
IP Logged
 
thescruff
Global Moderator
Trade Member
Author
*****
Offline

Who said plumbing was
easy.
Posts: 6037


Total Thanks: 147
For This Post: 1


Gender: male

Trade: Plumber



Re: White powder (effluorescence?) on walls
Reply #4 - Apr 25th, 2017, 8:47am
 
woodsmith wrote on Apr 24th, 2017, 10:28pm:
However it may just be salts in the brickwork,or mortar, that have been activated by the wet plaster and once you clear them off they won't reappear.


That's what it sounds like to me, you can tell if the plaster is dry/drying as it changes colour (lighter)
Back to top
 
Thank User For This Post View members image gallery  
IP Logged
 
Page Index Toggle Pages: 1
Send Topic Print