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Old 08-29-2011, 11:44 AM   #1
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Expansion / Contraction 2x4 whitewood studs on brick


Home was built in the 1860s.

Old material removed: Plaster, lath and 1 5/8" x2 1/8" wood studs that ran from the bottom of each ceiling joist (ceiling joists are pocketed into 1st course of brick) to subfloor were removed from a 2nd floor room. The 1 5/8 x 2 1/8s were also fastened to the brick wall with nails into wood blocks (brick shaped) that are built into the brick wall. Attic is located above the 2nd floor.

New material installed and proposed:

2x4 framing with header, faced fiberglass insulation, drywall (possibly vapor barrier between brick wall and studs?)



The thought behind the removal was to install a 2x4 wall that could be insulated with faced roll insulation for better temperature control within the room.

Questions:

1) Will the expansion and contraction of the 2x4s create stress on the brick wall? (brick is 2 course). The house is located in a Northern climate with no air conditioning in the summer, so humidity fluctuates significantly over the year.

2) Should the 2x4 studs be affixed to the wood blocks in the brick wall? Did this give support to the brick wall or was it intended to give additional rigidity to the 1 5/8 x 2 1/8 studs that the lath was attached to?

3) Any suggestions on reducing the impact on the brick wall from expansion/contraction of the 2x4 studs?

Open to removing and redoing wall if needed. Looking for thoughts on how best to achieve insulated wall without damaging the brick.

Pic1: full wall; Pic2: close up of wall; Pic 3: closeup of wood block built into wall.
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Expansion / Contraction 2x4 whitewood studs on brick-pic1.jpg   Expansion / Contraction 2x4 whitewood studs on brick-pic2.jpg   Expansion / Contraction 2x4 whitewood studs on brick-pic3.jpg  

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Old 08-29-2011, 02:13 PM   #2
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Expansion / Contraction 2x4 whitewood studs on brick


Strange framing detail. Why would attach the studs to the brick like that? There’s no need for it.

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Old 08-29-2011, 02:22 PM   #3
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Expansion / Contraction 2x4 whitewood studs on brick


Thanks for the response, I agree... I only fastened the 2x4s to the wood bricks as the original 1 5/8 x 2 1/8s were fastened to the wood bricks using nails. Not sure of the original purpose.... I had not seen this before and was hoping someone had experience with a similar setup.
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