Pressure Treated Wood Question????

davinci

i may be getting an addition. should all the plywood on walls be pressure treated, how bout the studs?
thanks

wallmaxx

Why all PT?
Is it to remain exposed to the elements
without any veneer such as brick, siding or stucco?

PT stuff is typically not kiln dried after treatment...
so when you build with it,
it is wet and can and does twist as it dries.

More project info and someone on the site
can be more helpful.

davinci

i guess building a deck would warrant ALL pressure treated wood? how would the wood then be stained?
would the footing postes be pressure treated as well as the joists or just the floor decking?

concretemasonry

The wood exposed to the weather should be pressure treated or naturally resistant (redwood, cedar) to moisture. The amount of treatment or loading depends on whether it is in direct contact of just exposed to the weather.

All treated wood must be connected with the appropriate fasterens (plates, nails, screws) AND all normal wood connected to the treated wood must have the same type of fasteners.

Generally, there is no benefit using treated wood where not required, but there is the potential problems caused later by long term exposure to the chemicals. This is the reason for the changes in the materials used for treatment.

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Dick

Engineer, designer and consultant recently active domestically and internationally on construction and design in about 35 countries.

Joe Carola

The answer is no. No reason. Did soemone tell you to do this?

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Joe Carola

Joe Carola

Yes, building a deck would, but your building an addition, so you don't need any pressure treated studs and plywood.

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Joe Carola

wallmaxx

I missed the part about this being a deck.

concretemasonry

Are you building an addition now or a deck that may be converted to a 3 season room and then ultimately to a finished addition?

This is a comon aproach, but it requires planning and awareness to codes and the fact that they will change.

My son did the same thing and had to tear out some along the way as the codes changed and enforcement got enforced more.

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Dick

Engineer, designer and consultant recently active domestically and internationally on construction and design in about 35 countries.

genecarp

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davinci

he also mentioned number 1 pine and number 2 pine??? what the heck are the both of those about?

BuiltByMAC

Dude, are you just bored?

Mac

davinci

why for a deck? number one or two?

Joe Carola

Davinci,

Are you building an addition or deck? Can you answer this?

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Joe Carola

AtlanticWBConst

Maybe he's been watching too much Holmes on Holmes...

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Jason Whipple

What in the world is going on here?!?

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Jason E Whipple, General Manager
Historic House Restoration, Cincinnati, Ohio
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neolitic

http://www.woodbin.com/ref/wood/softwood_grades.htm

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(Sorry....it seems there really are dumb questions)

Tom R

I don't believe pressure-treated wood is even legal in 'living space' (aside from basements), at least here in Jersey.

I'm guessing because in the case of a fire the noxious fumes would kill you even before the smoke or flames.

JustaFramer

You could use marine ply but be pepared to pay. The only time I have ever installed marine was because stone was going over the area where the marine was installed.

Like the others I don't see any point using pt for anything else other than a sole plate that is in contact with concrete. Or for deck building.

davinci

you would use ppt for the decking ?

Jason Whipple

Are you talking about floor decking for an addition or a deck? We keep asking and your not clearing it up at all

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Jason E Whipple, General Manager
Historic House Restoration, Cincinnati, Ohio
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