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From: Sum Guy on 28 Jul 2010 20:49 I've found that PL-Premium (polyurethane construction adhesive) to be a very durable, strong and water-proof glue for wood for all applications (indoor and outdoor). I just filled a couple of holes on the trunk of a silver maple that have been formed by some sort of insect over the past maybe 6-months. The hole is in the face of a limb-cut that I made a few years ago and had painted with black pruning paint. I was surprised how deep the "rot" was - I was able to push the plastic dispensing nozzle of the glue cartridge all the way into down into the trunk. So even though I've already done it, I'm wondering if anyone knows how well this stuff works at filling holes in tree trunks to prevent further rot and allow the tree to grow over and eventually cover exposed heartwood.
From: JimR on 28 Jul 2010 22:37 "Sum Guy" <Sum(a)Guy.com> wrote in message news:4C50D026.EC3A74C9(a)Guy.com... > I've found that PL-Premium (polyurethane construction adhesive) to be a > very durable, strong and water-proof glue for wood for all applications > (indoor and outdoor). > > I just filled a couple of holes on the trunk of a silver maple that have > been formed by some sort of insect over the past maybe 6-months. The > hole is in the face of a limb-cut that I made a few years ago and had > painted with black pruning paint. I was surprised how deep the "rot" > was - I was able to push the plastic dispensing nozzle of the glue > cartridge all the way into down into the trunk. > > So even though I've already done it, I'm wondering if anyone knows how > well this stuff works at filling holes in tree trunks to prevent further > rot and allow the tree to grow over and eventually cover exposed > heartwood. Using pruning paint is not a recommended procedure because it traps moisture in the cavity and encourages rot, such as you found. It's better to leave this type of wound alone and let the tree heal itself. (Palms are a different matter . . . as monocots they don't heal . . .)
From: Sum Guy on 29 Jul 2010 00:26 JimR wrote: > Using pruning paint is not a recommended procedure because it traps > moisture in the cavity and encourages rot, such as you found. This was insect-induced rot. Moisture could not be trapped - this is a vertical surface we're talking about - roughly a circle about 3" diameter. Wood protected by oil-based coatings tends to weather better than left untreated. It's funny how pruning paint is somehow not good for exposed wood, yet you see people applying coatings to their decks and other exposed wood all the time. I've also found that pruning paint is good when applied to the top surface of horizontal limbs near the trunk that squirrels tend to tear apart - dammage that most people don't see because it's over their heads. The squirrels don't find the bark so tasty with the paint.
From: Evan on 29 Jul 2010 01:20 On Jul 29, 12:26 am, Sum Guy <S...(a)Guy.com> wrote: > It's funny how pruning paint is somehow not good for exposed wood, yet > you see people applying coatings to their decks and other exposed wood > all the time. Decks and other exposed wood which has been cut and milled into lumber is no longer alive... Wood on a tree is still alive and growing... It is best to leave tree wounds alone and allow them to heal naturally... Exceptions to this logic are rare... ~~ Evan
From: ransley on 29 Jul 2010 06:44 On Jul 28, 11:26 pm, Sum Guy <S...(a)Guy.com> wrote: > JimR wrote: > > Using pruning paint is not a recommended procedure because it traps > > moisture in the cavity and encourages rot, such as you found. > > This was insect-induced rot. > > Moisture could not be trapped - this is a vertical surface we're talking > about - roughly a circle about 3" diameter. > > Wood protected by oil-based coatings tends to weather better than left > untreated. > > It's funny how pruning paint is somehow not good for exposed wood, yet > you see people applying coatings to their decks and other exposed wood > all the time. > > I've also found that pruning paint is good when applied to the top > surface of horizontal limbs near the trunk that squirrels tend to tear > apart - dammage that most people don't see because it's over their > heads. The squirrels don't find the bark so tasty with the paint. what insect makes a hole 3"
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