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Message
advice from contractors about moisture barriers
Posted on 2/14/18 at 2:34 pm
Posted on 2/14/18 at 2:34 pm
im building some house steps from all treated lumber that will be in direct contact with concrete slab, so moisture wicking is of serious concern.
its a large set of steps with a landing, basically a small porch, so it is not easily moved or lifted after its built.
i thought about putting small squares of roofing tar paper for a vapor barrier under the 4x4 posts but is there something else that might be better?
its a large set of steps with a landing, basically a small porch, so it is not easily moved or lifted after its built.
i thought about putting small squares of roofing tar paper for a vapor barrier under the 4x4 posts but is there something else that might be better?
7
Posted on 2/14/18 at 2:38 pm to keakar
Jump over to the OB. They’ve been arguing over vapor barriers for the past few days.
Posted on 2/14/18 at 2:40 pm to keakar
Glue a piece of rubber mat under the 4x4 posts/legs.
Posted on 2/14/18 at 2:42 pm to keakar
Could you use some caulk and a foam sill plate gasket?
Posted on 2/14/18 at 2:49 pm to keakar
What you need is a standoff post base.
ETA: Simpson Strongtie CPTZ
ETA: Simpson Strongtie CPTZ
This post was edited on 2/14/18 at 2:50 pm
Posted on 2/14/18 at 3:08 pm to dfintlyHmmrd
quote:
What you need is a standoff post base.
i looked at those, but the galvanized ones dont seem strong enough and the heavy duty steel ones will rust like crazy seeing its down in golden meadow and even the fog and dew is salty like.
plus this is a house entry point so it needs to carry huge loads. just the steps alone are likely a few hundred pounds, then add the load of people carrying sofas, refrigerators, and appliances in and out of the house, i dont think a stamped steel bracket is not going to hold up under those conditions.
Posted on 2/14/18 at 3:09 pm to Geauxtiga
quote:
Glue a piece of rubber mat under the 4x4 posts/legs.
hmmm, i hadnt thought of that
Posted on 2/14/18 at 3:41 pm to keakar
Bro....
Those things can hold A LOT of weight.
Those things can hold A LOT of weight.
Posted on 2/14/18 at 3:47 pm to keakar
If you're already using a concrete slab, just get post anchor brackets and attach it to the concrete. The metal will be in between the concrete and the ground. If you really wanted to "seal" it, I guess you could put some roofing tar on the ends of the posts before attaching but it doesn't seem necessary if you don't have tar on-hand.
Posted on 2/14/18 at 3:48 pm to keakar
quote:
the galvanized ones dont seem strong enough
They are. How tall are these steps and how many posts? This is the preferred method of attaching wooden posts to concrete.
Posted on 2/14/18 at 3:50 pm to teambooyah
quote:This.
Those things can hold A LOT of weight.
The only worry I’d consider in Golden Meadow is uplift (the wooden structure floating) from flooding.
This post was edited on 2/14/18 at 3:51 pm
Posted on 2/14/18 at 3:54 pm to soccerfüt
Its rated to 3,350lbs of uplift, thats more than enough to keep it from floating away.
Posted on 2/14/18 at 6:11 pm to MLCLyons
quote:
How tall are these steps and how many posts?
three 8ft posts for landings and railings and three 4ft ones for the steps
Posted on 2/14/18 at 6:22 pm to dfintlyHmmrd
quote:
What you need is a standoff post base.
ETA: Simpson Strongtie CPTZ
ok, i am sorry, i thought you were talking about these things LINK
that is what i saw at home depot, and you can see why i wasnt sure how strong those things were.
these were the steel ones i saw that i figured would be rusty as shite in no time LINK
i didnt know about the ones you mentioned but yes, those look strong and solid so i will look into getting those
This post was edited on 2/14/18 at 6:25 pm
Posted on 2/14/18 at 6:45 pm to keakar
Just throw some STEGO on it and be done with it
Posted on 2/14/18 at 6:57 pm to keakar
You need a #8 Henway, we use them all the time.
Posted on 2/14/18 at 7:10 pm to keakar
Coat that wood with Copper-Tox, it’ll last for a long time if treated with it
Posted on 2/15/18 at 10:32 am to keakar
quote:
three 8ft posts for landings and railings and three 4ft ones for the steps
galvanized anchors should be more than sufficient. The random one I looked up specs on had a weight limit between 1200-3600lbs depending on the application. That's per bracket, with the weight spread this much those brackets will probably outlive you.
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