WET location covers: keep the foam gasket, or toss?

fixizinFebruary 10, 2011

These thin black foam gaskets don't look sturdy enough for the long-haul here in the intense sun, intense rain sub-tropics. A telco buddy turned me on to the excellent RTV silicone they use, called "B-Sealant"; skins quickly, to avoid dust, but remains uncured for a long working period, to facilitate mating of parts.

He says they use the stuff everywhere outdoors, on everything--caps, covers, those slit rubber ports with cables passing through, high amperage power cables, etc.--and it's good for 10+ years, REAL LIFE, not "caulk tube marketing years", lol. (Seriously, in what sheltered lab do they derive that "50 year" figure on the $1.99 latex caulk? Stuff goes from caulk-to-chalk in like 4 years in So-Fla...)

Thanks in advance.

Thank you for reporting this comment. Undo
brickeyee

If the box is really exposed it will not matter much.

Condensation forms no matter how well you seal them against liquid water entering.

The AHJ could gig you if you omit the supplied gasket.

    Bookmark   February 10, 2011 at 11:49AM
Thank you for reporting this comment. Undo
fixizin

Good point, AHJs tend to see things one way--THEIRS... I was only thinking of the box-to-cover seal... there's also the GFCI-to-cover seal further in... don't want much/any goo on recep itself.

Gasket PLUS RTV it is! Thanks.

    Bookmark   February 11, 2011 at 2:20PM
Sign Up to comment
More Discussions
Insulation in electrical box
While in my attic the other day I saw an open electrical...
sgilliatt
Lights Flickering...
We paid an electrician to put in a ceiling light in...
regina_phalange
Too much load for circuit?
I have 200 amp service to the main panel (which has...
zver11
Help with 240V 50A location
I'm trying to do a challenging kitchen layout. I will...
12crumbles
Motion sensor that doesn't click
I have a motion sensor very much like the picture attached...
drmeow3
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™