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Old 02-12-2012, 01:24 PM
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Default "Marine Grade" Lumber vs. Pressure Treated

Are there any reasons why I should not use pressure treated boards from my local building supply store to replace the deck boards on my pier?
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Old 02-12-2012, 01:26 PM
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many of us do....I treat with Wood Rx - once a year
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Old 02-12-2012, 01:30 PM
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Nope, as long as there is no direct contact to the water.
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Old 02-12-2012, 01:34 PM
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Originally Posted by Salty1! View Post
Are there any reasons why I should not use pressure treated boards from my local building supply store to replace the deck boards on my pier?
That's the cheapest repair. Ipe is arguably the best material for decks and docks.

http://www.ipedepot.com/picelist01.h...FWm-tgodwVgDIQ

Some composites are pretty good.
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Old 02-12-2012, 01:36 PM
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Thanks for the feedback! And how about the hot dipped galvanized nails? Are they worth the expense?
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Old 02-12-2012, 01:39 PM
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With the pressure treated wood now being mostly copper (instead of arsenic) those nails are a must. The pressure treated wood eats normal nails and hurricane clips.
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Old 02-12-2012, 01:41 PM
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Thanks for the feedback! And how about the hot dipped galvanized nails? Are they worth the expense?
Yes, or you will be replacing on a regular basis. How about screws, coated square drives, do not pull out if you have tides go over the deck top.
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Old 02-12-2012, 01:42 PM
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Yep, screws are better. Stainless steel square drive screws are what they use at my marina.
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Old 02-12-2012, 02:03 PM
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Would my Dewalt 18V drive those screws or would I need something heavier?
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Old 02-12-2012, 02:04 PM
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Would my Dewalt 18V drive those screws or would I need something heavier?
It would drive them into pressure treated lumber just fine. Ipe would have to be pre-drilled.
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Old 02-12-2012, 02:56 PM
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Much obliged!
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Old 02-12-2012, 03:22 PM
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I would put a heavy paint on the wood. That should keep out most of the UV rays that makes wood twist and split. I used Thompson a few times and that was a waste of $$$$
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Old 02-12-2012, 05:03 PM
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Yep, screws are better. Stainless steel square drive screws are what they use at my marina.

X2 for Stainless Steel
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Old 02-12-2012, 05:19 PM
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We use stainless steel screws. My cordless drill will drive them, but a cordless impact driver works better.
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Old 02-12-2012, 07:25 PM
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have bought hot dipped galv nails from lowes that were rusting in the box.
I only buy from my hardware store now
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Old 02-12-2012, 08:25 PM
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The main advantage to buying from a marine supplier is they can still sell CCA lumber and usually at much higher concentrations than anything you can buy at the Home Depot. (,80 CCA or higher)
Up in a fresh water creek that may not be too important but in real salt water the HD wood might not last 5 years and it will be checking and splintering long before that.
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