Reappearing Deck Screw Rust Stains

Reply

  #1  
Old 05-28-13, 08:13 PM
B
Member
Thread Starter
Join Date: May 2013
Posts: 2
Received 0 Votes on 0 Posts
Reappearing Deck Screw Rust Stains

Hello,

I am hoping that you can help me. I read another post on this forum from a few years ago in which a forum member was having the same issue that I am:

I used a wood brightener containing Oxalic Acid to clean my fully covered cedar decking on my screen porch and mostly to remove the rust stains that are on it because the builder used non-stainless steel screws. In my case, I actually REMOVED the old screws before cleaning because I'm going to replace them with stainless. When the wood was wet, and through the drying process, it was clear that the chemical HAD worked - perfectly in fact. HOWEVER, after the boards had dried, the stains came back.... and I'd say they were even larger (albeit faded). I repeated the process, again it looked like everything had worked, but again the black stains are back. I've attempted to attach pictures for you to see an example.

Anybody know what I can do? I'm not planning on staining it... and it has essentially zero exposure to moisture.

Thanks

Name:  ResizedImage_1369789666623.jpg
Views: 1569
Size:  20.7 KBName:  ResizedImage_1369789667032.jpg
Views: 1410
Size:  16.4 KB
 
Attached Images  
Sponsored Links
  #2  
Old 05-29-13, 08:05 AM
P
Temporarily Suspended
Join Date: Jul 2008
Location: NY
Posts: 10,982
Received 0 Votes on 0 Posts
I would pressure wash it with a gas powered machine. Those electric things are worthless in my opinion.
 
  #3  
Old 05-29-13, 08:20 AM
B
Member
Thread Starter
Join Date: May 2013
Posts: 2
Received 0 Votes on 0 Posts
Not at all what I asked...
 
  #4  
Old 05-29-13, 08:34 AM
P
Temporarily Suspended
Join Date: Jul 2008
Location: NY
Posts: 10,982
Received 0 Votes on 0 Posts
The idea of the pressure wash is to get the oxalic acid out of the deck completely. That's why the stains are coming back.
 
Reply
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


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: