Sistered 2xs for Posts?

[crokett]

I want to add an open sided structure to my shed to store stuff that can be covered but still survive outside. To make it as cheap as possible, any problems with using sistered 2x4s or 2x6s for posts? I have that lumber already, I do not have any posts.

[maxparot]

The Problem is that it allows a route for moisture to get into the core of your post and then rot from the inside out. This is true even when using treated lumber because of the increase in core moisture. Treated lumber will slow things down but compared to a solid treated post you will see a decrease in its useful life.

[scorrpio]

You might consider using some kind of moisture-barrier wrap...

[crokett]

Max,

I thought about the moisture issue. My thinking is for one of the posts there will be walls around it. The posts at the open end is a concern but I thought about using silicone sealant between the 2xs plus I'd be using construction adhesive to glue them together.

[JimD]

I did this on a temporary basis for pump-jacks. I was residing my house at the time and needed 24 foot 4x4 posts. Even if I could find them, I couldn't move them so I made some out of pressure treated 2x4s. I overlapped the joints 6 feet or so and glued and nailed them together. The load was not high but they held up for the 6 months or so I needed them to just fine.

[lkazista]

Silicone the joints and use some exterior grade stain or oil based primer and paint, repaint it every year without miss and you will be fine. Or just break down and buy a couple of pressure treated posts.

[crokett]

Or just break down and buy a couple of pressure treated posts.

Yeah, I know. The 10 bucks or whatever for the posts isn't gonna blow the budget, I just have this big pile of lumber I got for free stacked near the shed. I sold getting it to LOM in part cause I said I could use the stuff for this project among other things.