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-   -   Sealing Conduit (http://www.diychatroom.com/f18/sealing-conduit-135848/)

seansy59 03-03-2012 09:55 PM

Sealing Conduit
 
How would I seal the top of the pvc conduit so no water gets in. It is 1/2" and has speaker wire coming out of the top for a speaker on a 2x4.

The conduit faces straight up. What would I use? It is standard 14ga speaker wire if that even makes a difference.

Links are helpful.

Thanks

http://img859.imageshack.us/img859/2...nduitmount.jpg

rrolleston 03-03-2012 10:06 PM

Glue an outdoor box on top and put something like this on the front,

http://ep.yimg.com/ca/I/yhst-5323690..._2199_12376334

SD515 03-03-2012 10:17 PM

Being just speaker wire, I'd seal it with silicone or duct seal, if you don't mind the look. Does the bottom of the conduit go into the house?

Signal Guy 03-03-2012 10:47 PM

I would put a couple of ninety's on to form a U. Then, still seal it with silicone or duct seal to keep insects out

rrolleston 03-03-2012 10:57 PM

Quote:

Originally Posted by Signal Guy (Post 869666)
I would put a couple of ninety's on to form a U. Then, still seal it with silicone or duct seal to keep insects out

That would put the opening of the conduit about a foot away from where the speaker is. I would install a proper outlet box with plate to keep the water from getting in and stuff the box full of insulation so nothing will go in there.

Missouri Bound 03-03-2012 11:00 PM

The box seems like a good idea. I think I would just put a cap on it, drill the cap or the pipe from the side and silicone the wire in place......but that's just me.......:whistling2:

rrolleston 03-03-2012 11:10 PM

Quote:

Originally Posted by Missouri Bound (Post 869684)
The box seems like a good idea. I think I would just put a cap on it, drill the cap or the pipe from the side and silicone the wire in place......but that's just me.......:whistling2:

That would work too and keep stuff from getting in the pipe.

seansy59 03-04-2012 10:32 AM

Quote:

Originally Posted by SD515 (Post 869634)
Being just speaker wire, I'd seal it with silicone or duct seal, if you don't mind the look. Does the bottom of the conduit go into the house?

Yes the conduit goes into the house, but the conduit runs about 25-30ft buried, then it goes up about a foot and into the corner of a crawlspace vent (the 1/2" conduit slid perfectly into the vent whole) with silicone around it to prevent jumbo bugs from coming through.


Quote:

Originally Posted by Missouri Bound (Post 869684)
The box seems like a good idea. I think I would just put a cap on it, drill the cap or the pipe from the side and silicone the wire in place......but that's just me.......:whistling2:

I might do that, or get a PVC 1 gang box, and put a weatherproof cover on it with a small hole drilled for the wire, and silicone it. This way spare wire is inside the box incase the wire ever needs to be cut back and fixed or replaced (animals chewed it, oxidized, new speaker, etc)

Thanks all!

seansy59 03-04-2012 10:33 AM

Quote:

Originally Posted by rrolleston (Post 869621)
Glue an outdoor box on top and put something like this on the front,

http://ep.yimg.com/ca/I/yhst-5323690..._2199_12376334

Doesn't look like it would prevent water from entering in driving rains and wind. But thanks anyway.....

rjniles 03-04-2012 12:51 PM

Buried conduit will get wet no matter how you seal it. I hope your wire is rated for wet location.

rrolleston 03-04-2012 01:31 PM

Quote:

Originally Posted by seansy59 (Post 869942)
Doesn't look like it would prevent water from entering in driving rains and wind. But thanks anyway.....

Any water that manages to blow in that opening and up almost two inches would be very minimal and just stay in the insulation stuffed in there and evaporate.

And like rjniles said the wire should be rated for wet loacations and should probably also be sunlight resistant unless you plan on replacing it often.

seansy59 03-04-2012 03:17 PM

Quote:

Originally Posted by rrolleston (Post 870107)
Any water that manages to blow in that opening and up almost two inches would be very minimal and just stay in the insulation stuffed in there and evaporate.

And like rjniles said the wire should be rated for wet loacations and should probably also be sunlight resistant unless you plan on replacing it often.


I'm using the same wire I used 10 years ago outside. Its basic clear speaker wire for indoor use. It held up being directly buried for 10+ yrs. until an animal chewed on it. Same stuff I'm using in the conduit I just buried last week. The conduit is just going to keep animals from chewing on it, and keep it out of the sun/weather.

seansy59 03-04-2012 08:41 PM

Would this also work too? "Duct Seal"

It seems this is what electricians use, and I also so this at the top of a utility pole with the wires coming out of conduit.

It just seems to me a big PVC box would be "ugly" and annoying up on the top of the post near the speaker. At least I can paint this stuff and have it not "stick out" like a sore thumb.

http://www.homedepot.com/h_d1/N-5yc1...1&keyword=duct seal&storeId=10051

Missouri Bound 03-04-2012 09:16 PM

Quote:

Originally Posted by seansy59 (Post 870496)
Would this also work too? "Duct Seal"


It just seems to me a big PVC box would be "ugly

http://www.homedepot.com/h_d1/N-5yc1...1&keyword=duct seal&storeId=10051

Not nearly as ugly as duct seal....:laughing:

junkcollector 03-04-2012 09:58 PM

how about gluing on a service head? The ones for 1/2 and 3/4 PVC aren't that big.

http://images.lowes.com/product/conv...00061118lg.jpg


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