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Old 09-29-2012, 07:38 AM   #16
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bad lumber for deck issue


I go and get my 5/4 decking and lay it down on the deck, its not flush! So I string a line across the top of the joists, nothing is level. So I start to measure the joists and NONE of them are the same size, they range from 7-1/8" to 7-1/2".

Side note, we are just building this sell the house next spring, so we are not looking for perfect, we are just look for meets code and is safe and looks respectable.


I see it off as much as 1/4". I dont think you'll see 3/8" after its decked but, I have used a power plane in the past to take off high spots. Allways seemed easier than taking structure apart.


Last edited by 12penny; 09-29-2012 at 07:44 AM.
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Old 09-29-2012, 12:20 PM   #17
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bad lumber for deck issue


rule of thumb for framing treated lumber, make the tops of the joists the same where the decking lays. Cut, notch, add any needed variances to the underside of the structure.

To fix your problem try and pull the hanger nails with a cats claw and reinstall flush with the top of the ledger-band board. If the cats claw does not work, get a 12" metal sawz all blade and a sawz all and cut the joists and hangers free and re attach flush to the top. You can even notch some out of the underside of the joists to sit down into the hanger better and flush out the tops...
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Old 09-30-2012, 07:40 AM   #18
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bad lumber for deck issue


After reading this thread, I'm curious. What is the best way to set your joists? Set a couple level lines across and adjust each one individually? What about the shrinkage? Can one board shrink much more than another?
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Old 09-30-2012, 09:18 AM   #19
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Quote:
Originally Posted by MisterSteve View Post
After reading this thread, I'm curious. What is the best way to set your joists? Set a couple level lines across and adjust each one individually? What about the shrinkage? Can one board shrink much more than another?
Not a lot can be done about board shrinkage, except leaving lumber at the job a few weeks before framing with it to get it acclimated but that does not always work. It is best to figure out the used side and make all joists flush with the useable side.
For a deck with the top side being used(decking) only, the best way is to build the floor with the joists flush along the top edge of the floor frame perimeter. Toe nail the joists into place, after it is framed add on the joist hangers. If you are sitting the joists onto a beam notch the joists at the beam to accommodate even sizes throughout or rip the entire joist down to make them all the same. With joist hangers, it does not matter if the joists have a 1/2" difference between one another because the difference ends up beneath the useable surface (topside).

Last edited by hand drive; 09-30-2012 at 09:22 AM.
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Old 09-30-2012, 10:28 AM   #20
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bad lumber for deck issue


Quote:
Originally Posted by MisterSteve View Post
After reading this thread, I'm curious. What is the best way to set your joists? Set a couple level lines across and adjust each one individually? What about the shrinkage? Can one board shrink much more than another?
Want to know the BEST way?

Use a steel frame system, the benefits far outweigh any downside, you don't deal with any of these issues.
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Old 09-30-2012, 12:38 PM   #21
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bad lumber for deck issue


Sorry to hear about you problems. Have you contacted your supplier about the material? Many times they will contact their manufacturer and they will replace the material and pay you money for labor to replace. I have had this type of problem before and my supplier made it right. The material with 1/2" of variance is not to manufacturing spec's. Your supplier mixed your material from two different bunks or from two different mill runs.
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Old 09-30-2012, 12:48 PM   #22
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Originally Posted by Rocket98 View Post
Sorry to hear about you problems. Have you contacted your supplier about the material? Many times they will contact their manufacturer and they will replace the material and pay you money for labor to replace. I have had this type of problem before and my supplier made it right. The material with 1/2" of variance is not to manufacturing spec's. Your supplier mixed your material from two different bunks or from two different mill runs.

1/2" in treated is standard imo, that stuff is all over the place...

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