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Quote: Originally posted by Geoff48 on 19/8/2017

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Delamination repair from under the van will have been done by a repair shop. They inject the solution from under the van.
Your right in that the styrofoam becomes detached from the ply the solution you pour in from the top layer is an expanding adhesive and forms a new layer filling the voids between the styrofoam and ply and adhering to both the styrofoam and ply. I'd suggest re-dowelling where the dowels have fallen out under the van otherwise your solution will just drain through. The most time consuming thing for me was pulling the carpet up and removing the hundreds of carpet staples. I relaid the floor with vinyl. One snag I did come across was that the water pipes in my van came diagonal from the water inlet to the kitchen sink - I had incorrectly thought that these pipes would have been been run like domestic electric cables. I managed to puncture two pipes and the pipes were then relaid going around the van and not under the floor. Congratulations on the jobs done so far, not sure I would have wanted to tackle that.   

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Quote: Originally posted by tango55 on 23/8/2020

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The dowels are nothing more than a process to cover and seal the holes that were used for pouring in the glue and that's it. It's the glue itself that does the delamination repair which fills up the gaps between the upper and lower floor ply that causes the spongy floor on the upper ply. The dowels have no connection with creating greater strength in any way whatsoever.

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Quote: Originally posted by Pickled Onion on 23/8/2020

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Quote: Originally posted by tango55 on 23/8/2020

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The dowels are nothing more than a process to cover and seal the holes that were used for pouring in the glue and that's it. It's the glue itself that does the delamination repair which fills up the gaps between the upper and lower floor ply that causes the spongy floor on the upper ply. The dowels have no connection with creating greater strength in any way whatsoever.

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Welcome to the forum knuttyman.
Sorry but I'm afraid we will have to disagree with you on this one Tango, I still believe they do have a part to play in adding to the structural integrity of the ply sandwich, especially if you use enough. The one-shot 'glue/foam' will stick to almost anything, as is apparent with any excess or spills, hence it will bond to both plys as well as the wooden dowel (if they are touching both top and bottom), therefore it must add strength to the finished repair as a whole.

Dave.

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