05:42PM | 03/24/04
Member Since: 03/23/04
3 lifetime posts
Hi all....

Just a quick question. How long will a treated 4x4 last if buried in the ground. Will this period be diminished if it is buried in concrete? Lastly, is there any recommended treatment that can be applied to the 4x4 to extend it's life? Appreciate your time and thanks for taking the time to look!



10:16AM | 03/27/04
Member Since: 11/06/02
1280 lifetime posts
part of the answer can depend on soil type, water level, and climate, as well as kind of PT lumber.

In the pacific region of America, you could be talking about incised doug fir with pt whick doesn't penetrate as far into the wood as SYP PT

There are levels of saturation too.

.4 for above ground

.6 for ground contact

.8 for immersion

and the enviro wackos made such a stink about a product that they could not prove was hurting anyone that the lumber industry has changed formulae so that no-one is sure.

when the govt made the painting industry take all the VOCs out of paint, the quality went downhill drasticly so we could be looking at the same result in PT lumnber. WE already know that the hardware corrodes faster.

That said, 30-40 years should be a decent estimate.

You can paint it with compounds like Osmose having copper in it to extend lifespan some more.

Excellence is its own reward!


02:19AM | 03/28/04
Member Since: 03/27/04
28 lifetime posts
"and the enviro wackos made such a stink about a product that they could not prove was hurting anyone that the lumber industry has changed formulae so that no-one is sure." actually at places like fort christmas in florida they found alarming levels of toxins in peoples systems that worked there from day to day insde the recreated wooden fort. the old fashioned non-enviro friendly way to make any post treated any way last long is to paint the ground contacting end with blackjack. you could also dip the ends of a resistant wood like ceder or cypress in copper tox and that should last a lot longer then the poor quality pt woods.

Excellence is in the mind of the beholder!
Click to reply button
Inspiration banner


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.

Reply choose button


Post new button or Login button

To test the boundaries of small-footprint living, interior designer Jessica Helgerson moved her family to a 540-square-foo... Filling an underutilized area beneath the stairs is a smart way to save space. Doing so with a stash of wood, however, is ... The Audubon Society inspired wallpaper in this Adirondack-styled mudroom will get you in the outdoor mood. Grab your coat ... Chalkboard paint opens up endless possibilities for customizing your dresser time and time again. Use chalk to label the c... A fireplace in the bathroom creates the ultimate setting for relaxation. Homeowners often choose electric or gas over wood... This roomy boot tray made from punched metal stands up to all the elements. Station it in your mudroom or at your back doo... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... FLOR tiles are an affordable way to customize a carpeted floor covering for any space. Make anything from runners to wall-... Chalkboard paint features prominently in this elegant yet unpretentious headboard design. Add a new message daily to reflec... Salvaged boards in varying widths and colors make up the dramatic accent wall in this attic space. The high-gloss white of... The indecisive homeowner need not fret over choosing one (or even two) cabinet colors. The kitchen cabinets in this artist... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... First dress up your metal shelves with a coat of paint in an accent color that complements your kitchen decor. Then arrang... Dark wood shelving and a matching upholstered bench keep this closet sleek and refined. The large window brightens the sub...
Follow banner a
Newsletter icon Flipboard glossy Facebook Twitter Pinterest Youtube Rss icon