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#1
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Saving deck supports
My is 20 yrs old and the 4x4 supports are sunk directly in the concrete.
Inspection does not reveal any obvious rot... yet. I was wondering if making a flashing near the concrete/ wood interface but high enough to allow air circ would be of any use at this late date. I also considered using the glycol-borax-boric acid mix as a preventative. There is a bit of a gap between the wood and concrete that should accept this if it's of sufficiently low viscocity. I know that in the long run I't's a lost cause but is this a worthy project? |
#2
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Saving deck supports
C & E wrote: My is 20 yrs old and the 4x4 supports are sunk directly in the concrete. Inspection does not reveal any obvious rot... yet. I was wondering if making a flashing near the concrete/ wood interface but high enough to allow air circ would be of any use at this late date. I also considered using the glycol-borax-boric acid mix as a preventative. There is a bit of a gap between the wood and concrete that should accept this if it's of sufficiently low viscocity. I know that in the long run I't's a lost cause but is this a worthy project? Location of deck? city, state Is concrete a slab on grade? A pier foundation? I doubt that the flashing would help much or be worth the effort. You might consider drilling a hole into the post at a 45 deg angle such that the bottom of the drilled hole is about 3 or 4" above the concrete......... fit the hole with palstic tube & funnel so that your can flood / saturate the post base with some sort of wood preservative if you want to go "organic" use raw linseed oil...like the Vikings do this dance when the wood is as dry as it gets ......no rain or watering for a long time cheers Bob |
#3
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Saving deck supports
52 detailed pages, see groundwater control, climate, and more at:
http://www.buildingscience.com/resou...r_Renovate.pdf it's always about the moisture travel, this website always shows more than i need to know, see other links from: http://www.buildingscience.com C & E wrote: My is 20 yrs old and the 4x4 supports are sunk directly in the concrete. Inspection does not reveal any obvious rot... yet. I was wondering if making a flashing near the concrete/ wood interface but high enough to allow air circ would be of any use at this late date. I also considered using the glycol-borax-boric acid mix as a preventative. There is a bit of a gap between the wood and concrete that should accept this if it's of sufficiently low viscocity. I know that in the long run I't's a lost cause but is this a worthy project? |
#4
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Saving deck supports
"BobK207" wrote in message ps.com... C & E wrote: My is 20 yrs old and the 4x4 supports are sunk directly in the concrete. Inspection does not reveal any obvious rot... yet. I was wondering if making a flashing near the concrete/ wood interface but high enough to allow air circ would be of any use at this late date. I also considered using the glycol-borax-boric acid mix as a preventative. There is a bit of a gap between the wood and concrete that should accept this if it's of sufficiently low viscocity. I know that in the long run I't's a lost cause but is this a worthy project? Location of deck? city, state Is concrete a slab on grade? A pier foundation? I doubt that the flashing would help much or be worth the effort. You might consider drilling a hole into the post at a 45 deg angle such that the bottom of the drilled hole is about 3 or 4" above the concrete......... fit the hole with palstic tube & funnel so that your can flood / saturate the post base with some sort of wood preservative if you want to go "organic" use raw linseed oil...like the Vikings do this dance when the wood is as dry as it gets ......no rain or watering for a long time cheers Bob Sorry about the lack of clarity, Bob. That ws writen in too much haste. My location is south- central PA. The concrete is simply pured in a hole around the wood. All that said I think that your comment suffices as does the site that buffalobill posted. Thanks to both of you. Have a great Christmas. |
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