Decking wood vs framing wood

miamicuse

I need some boards that's thicker than 1x for bracing. I found this decking wood that's 5/4" thick at Home Depot.

http://www.homedepot.com/Lumber-Composites-Decking-Decking-Boards-and-Posts/h_d1/N-5yc1vZbqm4/R-100087342/h_d2/ProductDisplay?catalogId=10053&langId=-1&storeId=10051#.URWKJPL_3s0

5/4 x 6 x 8 Premium Pressure-Treated Decking

What I found interesting is these boards are MUCH harder then the standard framing 1Xs and 2Xs which I believe are made of pine. Those my drills and drivers would cut through like knife through butter. This wood decking my drill would take over a minute to drill through with new wood bits. Old bits wouldn't even make a dent. What kind of wood is this?


Furthermore, I understand one needs to use pressure treated wood furrings when connecting to concrete block walls. However, if the wall is not perfectly plumb and need to be shimmed a little, why are those shims never pressure treated? Doesn't that defeats the purpose?

framer52

What kind of wood is this?
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southern yellow pine

why are those shims never pressure treated? Doesn't that defeats the purpose?
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always use cedar shingles and hey have properties that resist moisture in them

woodworkbykirk

you can get non pressure treated 5/4 stock no problem at a lumber yard, just dont go to a big box.. as for keeping wood out of contact of concrete just use either 8 mil vapor barrier or sil gasket.. regarding the shims.. cedar will still rot if its against a concrete wall that has moisture issues. you can also buy plastic shims at big box stores though you only get 1/5 the amount you would from a bundle of cedar shims at the same cost

kwikfishron

Change the drill rotation from reverse to forward and try again.

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miamicuse

No serious. It was in forward. I couldn't believe it. I had to lean in real hard too.

woodworkbykirk

buy a new bit

A Squared

So what are you doing that 4/4 is inadequate but 5/4 is sufficient, and how did you determine that?



If you're seriously taking more than a minute to drill 5/4 of any kind of wood, you're doing something wrong.

woodworkbykirk

needing 5/4 is commonly needed in renos in order to several things.. such as furring out walls.. strapping ceilings where existing pipes are just over 3/4" thick so that extra 1/4 is needed so drywall will clear it when hung.. amoung other things