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Old 10-06-2012, 04:13 PM   #16
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Wood rot repair epoxy recs?


Here is a picture of a repair that I did 10 years ago with polyester resin mixed with sawdust. I took the picture this morning. It shows how strong a repair with epoxy can be. We had a branch break and our tree guy just sawed it off. When the second one broke I jacked up the branch off the ground and reconnected it with resin and fiberglass matting laid inside the break. About one third of the bark was still attached so there was sap flow. It is a healthy growing branch. Full disclosure. I also cabled the branch.
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Old 10-08-2012, 09:53 AM   #17
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Wood rot repair epoxy recs?


Hey, thanks all. Well, I went with the "Git Rot" product this weekend to strengthen the remaining wood. It was available locally at West Marine. Man, that stuff is expensive! I also found some old West System 105 epoxy base I had from a boat repair about ten years ago. I'm going to get some new hardener and see if it still works. That stuff is expensive, too! I have plenty of sawdust from under the table saw to mix with it. I'll let you know how it turns out.

funfool, I saw that Durham's Rock Hard stuff, but I think I read somewhere that that stuff is water soluble and not good for outdoor repairs? I'm not sure, though.

Zircon, cool story and pic!! I would never have thought of epoxying a limb back onto a tree!
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Old 10-08-2012, 10:16 AM   #18
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Wood rot repair epoxy recs?


Please be careful with outdated resin or hardener. Nothing worse than a gooey mess that will not cure. I think when a prior poster mentioned using leftover marine resin he was talking about something not so old.
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Old 10-08-2012, 11:05 AM   #19
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Wood rot repair epoxy recs?


Thanks SD, I'll test it first
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Old 10-08-2012, 11:54 AM   #20
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Wood rot repair epoxy recs?


Quote:
Originally Posted by zircon View Post
Here is a picture of a repair that I did 10 years ago with polyester resin mixed with sawdust. I took the picture this morning. It shows how strong a repair with epoxy can be. We had a branch break and our tree guy just sawed it off. When the second one broke I jacked up the branch off the ground and reconnected it with resin and fiberglass matting laid inside the break. About one third of the bark was still attached so there was sap flow. It is a healthy growing branch. Full disclosure. I also cabled the branch.
Great story! They do sell fiberglass rebar type material that will soak in resin and cure in place. That might have given you some added strength.

Good epoxy repairs can and should be as strong as the original wood. If they do not flex and adapt though it is like a bad filling in a tooth.

As for mixing sawdust and resin. I used to build custom fiberglass kayaks to make a few bucks and pour such material into the the bow and stern tips when all else was finally finished. Then I would drill through the cured plugs for rope to carry and tie the things to car rooftops. As far as I know, none ever leaked.
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Old 10-08-2012, 12:50 PM   #21
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Wood rot repair epoxy recs?


oh-fudge I agree it is like $7 dollars for a huge can of it from home depot, mix it up with water in a pan and apply it.
I have used it in exterior applications, example is a front porch post and beam setup.
Structurally is still sound, it is the front entrance to home and looks like crap.
Real fix is to stop whatever caused the rot, replace the beam. Toss out a bid for proper repair and is out of budget. What else can we do?

I have used both the durham and the bondo, happy with both of them, I can report 5 years later with one project, looks just as good 2 months ago as it did 5 years ago.

I find that the duhram is easy to carry and store in my work van, I have the bondo also, but the 2 part hardeners are missing or dried up, basically garbage and need to throw away.

I also have never used the Fiberglas materials that are mentioned, I am taking notes on them, we never stop learning.

My mindset is, you know the proper repair, stop the rot and replace the wood. If not cost effective, we go into "git me by mode"
Next week will be using it on exterior French doors, is standard brick moulding with stucco rolled into it.
Fix properly is break out the stucco and replace trim, have stucco repaired, or put durham on the job again.
Maybe I also should be using these new resin products, But I know what has worked for me over the years.
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Old 10-08-2012, 01:20 PM   #22
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Wood rot repair epoxy recs?


I totally agree with sourcing rot and replacing with real wood when possible. But sometimes on my projects the cost of finding the last millwright on the planet still doing such work out of solid teak just does not work out. I hope I did not suggest epoxy was an alternative to fixing problems behind fails?

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