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Old 01-23-2009, 10:11 AM   #1
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Blocking necessary


Is blocking necessary if a header is nailed directly to the top plates? It also has double king studs. It wouldn't be much trouble to add blocking.

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Old 01-23-2009, 11:22 AM   #2
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Blocking necessary


Hey blue, if you're talking about trimmers ... yes you do. Doesnt matter if its a window or a door you must have something under header to support it.

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Old 01-23-2009, 12:29 PM   #3
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Blocking necessary


Not too sure I understand the question. As 12penny correctly stated, trimmer studs are always required under the header in addition to kingstuds up the ends of the header. The only blocking I can think of would be cripple studs between the header and the top plate if you were to install the header lower than you are.
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Old 01-23-2009, 01:31 PM   #4
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Blocking necessary


bluefitness, are you referring to cripples?
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Old 01-23-2009, 01:54 PM   #5
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Blocking necessary


Sorry guys. I might be using the wrong terminology again. I'm referring to a piece of wood that is placed between the last king stud and the next adjacent stud. It is usually just a piece of 2X8, 10, or 12 in (I guess what ever is on hand). It is to prevent the header assembly from shifting to the side.
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Old 01-23-2009, 02:42 PM   #6
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Blocking necessary


?????

Let's check terms here. Kingstuds are full height studs in the wall that but up against the end of the header, and the header is nailed to the kingstuds to keep the header from "rolling".

Trimmers are studs that the header actually sits on. There are usually 1 or 2 trimmers on each end of a header, depending on the header's length. Trimmers and kingstuds touch, and should be nailed together.

I cannot imagine where blocks would be installed.
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Old 01-23-2009, 06:53 PM   #7
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Blocking necessary


Here is a picture of what I'm referring to:




Instead of a 2x4 laying flat, a 2x8 or larger is put vertical. It is placed in the space adjacent to the king stud and next stud.
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Old 01-23-2009, 09:17 PM   #8
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Blocking necessary


Ahhh, now I got it. The blocking isn't critical to the framed opening. In some cases the sheathing of the exterior of the house needs the edges blocked so they can be nailed off. This depends on sheathing orientation, house design, and local requirements and accepted practices.

The blocking is of NO VALUE unless you can nail the exterior sheathing to it from the outside. If you can't, don't lose sleep over it.
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Old 01-25-2009, 07:00 PM   #9
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Blocking necessary


I have never seen blocking just by the window's king stud before. Some areas require blocking on studed walls for fire blocking but if its just by the king stud unless its to keep the window rough opening straight and plumb maybe. Never had to do it that way before

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