Joist question - InspectionNews

mathew stouffer · #1 (**permalink**) 06-30-2008, 09:33 PM

Is this type of joist rated for exterior exposure. Several joists were sistered under a hot tub and the water from the tub was deteriorating the joist. But,I was curious what everyone knows about these.

Thanks

Matt Fellman · #2 (**permalink**) 06-30-2008, 10:07 PM

Wow, all kinds of problems there....

Leaking tub of some type

Boring in the lower 1/3 of the joists

And no, I'd say that's not an 'outdoor' piece of lumber. However, I think the decking might give out before the joist.... kind of a race, really

That's a glue-lam of sorts, definitely not intended for outdoor use... under a hot tub.

Billy Stephens · #3 (**permalink**) 06-30-2008, 10:31 PM

Weyerhaeuser makes it .

.
http://www.ilevel.com/literature/TJ-7000.pdf
.
Also as treated / exterior applications ( PSL )

http://www.ilevel.com/literature/TJ-7100.pdf

David Banks · #4 (**permalink**) 07-01-2008, 05:14 AM

Second PDF posted by Billy says PSL for exterior use.
Rusty nails not good.
Is deck bolted to house. Proper flashings?

mathew stouffer · #5 (**permalink**) 07-01-2008, 07:50 AM

Thanks for the info. I spoke to a rep today and he said they have to be wolmanized for exterior use. Also the hole drilled is not an issue. Thanks for the web site, very helpful.

Mat

Jerry McCarthy · #6 (**permalink**) 07-01-2008, 09:57 AM

If those drilled holes are within 2 inches of the bottom of those framing support members its a violation of IBC 2308.10.4. (2007 CBC same)

Ron Bibler · #7 (**permalink**) 07-01-2008, 10:13 AM

Good eye Jerry.

Best

Ron

mathew stouffer · #8 (**permalink**) 07-01-2008, 01:01 PM

Jerry,
What if the joists are sistered, does that negate the detrimental effects of holes being drilled in the lower third.