Rosie1963
Active member
Hi All,
I want to get opinions on a specific problem I have. I have 7 galvanised strap floors. All of these were removed in 2011, re-galvanised and re-bolted using galvanised bolts. They are bedded on neoprene to try and insulate against other fastenings in the frame. This was post survey where a few of the bolts had turned to nothing and I could push a biro through the holes.
Ten years on, and in preparation for another survey, I have found some localised galvanic action around bolt heads. The Iroko around the bolts looks like “shredded wheat”. This has been made good, but clearly it is an ongoing problem and it seems to have accelerated whilst being out of the water. The yard has suggested trying different types of bolts and monitor them – using either stainless or bronze and see if that improves things? At first this sound like more a metal mix, but maybe it is worth a shot? (replacing bolts is easier than replacing or scarphing planks once they have gone).
Interested in people who have dealt with similar issues and what the outcomes were.
I want to get opinions on a specific problem I have. I have 7 galvanised strap floors. All of these were removed in 2011, re-galvanised and re-bolted using galvanised bolts. They are bedded on neoprene to try and insulate against other fastenings in the frame. This was post survey where a few of the bolts had turned to nothing and I could push a biro through the holes.
Ten years on, and in preparation for another survey, I have found some localised galvanic action around bolt heads. The Iroko around the bolts looks like “shredded wheat”. This has been made good, but clearly it is an ongoing problem and it seems to have accelerated whilst being out of the water. The yard has suggested trying different types of bolts and monitor them – using either stainless or bronze and see if that improves things? At first this sound like more a metal mix, but maybe it is worth a shot? (replacing bolts is easier than replacing or scarphing planks once they have gone).
Interested in people who have dealt with similar issues and what the outcomes were.
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