Pressure treated buck boards for door ?

Mudball

In the picture is a 8" concrete block door opening that is 41" wide. Can we get by without installing the pressure treated buck boards ? Im asking because on the interior wall there will be 2" of foam board and then 2x4 stud and 1/2" drywall so the door will set flush with the interior drywall a total of 6" from the edge of the interior block. Cant the door jams be terminated up against the block and boxed in above the door or will it be much more important to have the pressure treated buck boards ? We are simply not wanting to put the boards in if its really not necessary.
Thanks

Scuba_Dave

Reg wood can't be in contact with cement
Not sure if there is another method to use

Mudball

Thanks Scuba_Dave but Im not asking if I can use kiln dried wood but rather can I get by without using the pressure treated for a door opening in this application.

Yoyizit

PT wood is poisonous. Not for interior use.
Maybe you can use a layer of tarpaper between the kiln dried wood and the concrete.

Scuba_Dave

PT wood is used inside
Basement bottom plates of walls & wood in contact with cement is PT

CrpntrFrk

Paint the side of the door jamb to be up against the concrete with Jasco. Shim and tapcon screw to the concrete.

Yoyizit

I thought they used a barrier, either tarpaper or plastic, with untreated wood. . .?

Mudball

Thanks for all the help. Everything that is being said sounds good. It makes sense to me now after reading the replies that it will be best to install the pressure treated to the concrete opening so that there will be something to attach the interior kiln dried wood to.
Thanks

Scuba_Dave

Might be possible some places, but my Inspector would expect to see PT as the bottom plate
Even with sill gasket below the PT
Many splits have finished basement & PT bottom plate is used
Builders here don't use a sill gasket that I have seen
Every beam I have ever seen in a concrete pocket has PT under it
Seems every basement build I have seen on here someone asks if the bottom plate is PT
With the change in chemical treatment the PT can look almost like reg wood

Gary in WA

Code doesn't require p.t. under a beam in a pocket, just 1/2" air space on three sides. Some use roofing scraps, though code recommends p.t. there. You want a thermal/capillary break at plate/slab or door/block. Sec. 2317.4. Plates, Sills and Sleepers. All foundation plates or sills and sleepers on a concrete or masonry slab, which is in direct contact with the earth, and sills which rest on concrete or masonry foundations, shall be treated wood or Foundation redwood, all marked or branded by an approved agency.Some areas have floating slabs- Colorado. If you have a vapor barrier under the slab, very little moisture will reach the studs. Older houses have no v.b. so really need the sill sealer: http://www.greenbuildingadvisor.com/...-building-code

See if your local Inspector will accept a capillary break material as suggested.

Be safe, Gary

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