Outdoor masonry junction box


  #1  
Old 03-01-16, 10:09 PM
M
Member
Thread Starter
Join Date: Oct 2005
Location: Florida
Posts: 1,725
Received 2 Votes on 2 Posts
Outdoor masonry junction box

I just found the buried junction box for my pole/step lights. It was stucco-ed over.

After I chiseled out the stucco and pryed open the cover, I see a junction box in pretty bad shape.







The screw holes on this box are shot after 45 years.

I wonder if I get a weatherproof extension ring, something like this.



mount the ring onto the concrete directly (can't use the messed up holes on the junction box), then put a cover over it. Would that work?

It's going to be a real pain to take out this box to replace with a new one.
 
  #2  
Old 03-01-16, 10:32 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 70,055
Received 2,953 Votes on 2,664 Posts
I remember the thread where you were working on those lights and looking for a splice point.

That extension ring is the same size as the box. How will you be able to fasten it to the masonry ?

The six holes in the extension ring line up with the bosses where the screws would go in. Usually those bosses go all the way to the back of the box. It looks like you could catch two screws in the top ok. Can't quite see the bottom bosses. Sometimes longer screws or self tapping screws can be used.

I have used long tapcons to hold the extension ring on. It depends what's behind the box.
 
  #3  
Old 03-02-16, 07:00 AM
I
Forum Topic Moderator
Join Date: Feb 2005
Location: Near Lansing, Michigan
Posts: 10,941
Received 45 Votes on 43 Posts
I sometimes goop the screw holes with construction adhesive or 5 minute epoxy, jamb the screws in there and hold it for a few minutes. Tape or a clamp could help.

If you have more time to dedicate to the project, you could fill the holes with a hard epoxy putty, let it set up over night, then drill and tap it for new screw holes.
 
  #4  
Old 03-04-16, 05:23 AM
M
Member
Thread Starter
Join Date: Oct 2005
Location: Florida
Posts: 1,725
Received 2 Votes on 2 Posts
PJmax, yes I have been looking for the junction box for those lights for a while. Didn't think they would have stucco-ed over it but oh well.

ibpooks, I tried the three holes at the bottom, all three were literally turning into dust as I thread a screw in carefully. They are thoroughly corroded. The three top ones are ok.

I am thinking if I use an extension ring, I can make a "permanent" connection to the box and never mess with taking the ring off, just need to open the cover to the extension ring whenever I need to.

I am now thinking of using a bigger 2 gang extension ring like this.



I have patched the stucco around the box.



I think with this bigger ring, I can use the top center hole to attach to the existing box behind. Then I will enlarge the four outside holes of the extension ring if necessary, so I can use Tapcon screws to attach to the masonry directly. That will leave the four holes for the blank cover.
 
  #5  
Old 03-04-16, 10:52 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 70,055
Received 2,953 Votes on 2,664 Posts
That appears to be a good fix. You could cement right around the ring too.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: