Replies

1. 
   Matt | Dec 06, 2005 04:10am | #1

   No, No, Yes

   It depends on what species of PT lumber you are using.  Here in the SE US we use SYP which absorbs the PT chemicles quite well.  Most 2x boards appear to be fully saturated when you cut them in half.

2. 
   davidmeiland | Dec 06, 2005 04:29am | #2

   PT here seems to be hem-fir. When you cut a 2x8 there is maybe 1/4" saturation all around and white wood in the center. I paint all cut areas with Termin-8, and/or I flash joists and rims with Vycor. I think the latter is better and the preservative paints appear to wash out.

3. 
   Piffin | Dec 06, 2005 05:12am | #3

   Partly this will depend on the lumber you are using.

   I add to cut ends when placing timbers in ground contact only

    

    

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   Taunton University of Knowledge FHB Campus at Breaktime.
    where ...
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4. 
   toolbear | Dec 06, 2005 05:28am | #4

   In the NorthWet it's PT hemlock/fir.  Interesting to hear that southern pine takes up the chemicals better. 

   Getting stuff to move across the grain is very hard.  Figure about 1/4" of treatment outside and now that you cut it, nothing on the end grain.

   Liquids and rot move up and down the grain easily.  We paint all cuts with Termin8 or something similar.  They make the stuff in colors. 

   Worked on a big HOA termite project and all wood was primed on six sides with Kilz and all cuts were sprayed with Kilz by us.  We were issued cans of the stuff.

   The ToolBear

   "Never met a man who couldn't teach me something." Anon.

5. 
   JourneymanCarpenterT | Dec 09, 2005 03:24am | #5

        Thanks for the replies.  Here's links to the preservatives mentioned:

   • TERMIN-8
   • VYCOR
   • KILZ

        Anymore responses on how much you think preservative should be used are welcome.

   -T

6. 
   seek1970 | Dec 09, 2005 04:24am | #6

   on my job we miter all outside corners and glue them. no endgrain.

1. 
   Piffin | Dec 09, 2005 04:39am | #7

   how you do that when joining joists to ledgers or rim joists??? 

    

   Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!

7. 
   Matt | Dec 11, 2005 02:13am | #8

   One other thing - when I did treat endgrain, I had a 5 gal bucket handy and just dipped the ends of the boards.