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 Topic: Delamination disaster
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06/4/2016 at 7:22pm
Location: Aberdeen
Outfit: Vango Tahoe 300
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I bought a cheap caravan with the intent to do it up, so naively thought that the couple of bits of spongy floor would not be an issue. It had a faulty skylight above one of the areas, so I thought I could just cut out the plywood and graft in new.
I got the van home and cut out a good section of the floor right. I did wonder why it was so difficult to remove the plywood. Only after that, did I find out why and about delamination and how I should have left the ply well alone; drilling and applying resin instead.
Can I treat the exposed insulation, then put new ply over it? My idea was, that I'd graft back in new thin ply, before putting thicker ply across the whole floor area, adding a little more weight but improving rigidity across the floor.
Any thoughts would be appreciated.
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06/4/2016 at 8:45pm
Location: West Scotland
Outfit: Fleetwood Garland and Almera
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lay in the ply loose (you can drill it for the dowels 1st if you like) then lay in place with a good dollop of adhesive, inject the resin, tap in dowels and weight down. TBH if the top layer of ply was dodgy then you wont have done that much damage. dont use expanding foam
see how it is after the resin has cured, you shouldnt need a layer of ply on top
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06/4/2016 at 9:16pm
Location: Lincs
Outfit: Skoda Yeti and Coach
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Best way to treat Delamination is to leave it alone we have 2 lots of Delamination and hav e done nothing about , in the end you forget that they are there. On our last van we had some for 11 years did not make any differnce to the vam, andf its a l;ot less hassel.
Sennen
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10/4/2016 at 3:00pm
Location: Aberdeen
Outfit: Vango Tahoe 300
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Thanks for the replies and advice. I take it that part of the process of putting in the resin, bonds the underside of the top (new) ply to the insulation?
The concern I have, is that the exposed insulation has a very definite crack - actually it's more of a crevasse, which I'd like to rectify before putting new ply back on. When carefully standing near it, either side of the crack moves independently.
Rather than doing the drilling and dowelling, I wondered if it might not be easier and more effective, to screed the resin over the insulation; allowing it to seep to the bottom layer of ply, before applying the precut new top ply.
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11/4/2016 at 2:27pm
Location: West Scotland
Outfit: Fleetwood Garland and Almera
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the wooden dowels add strength, okay dont drill out the new ply but put in some blocks of 2" by 2" or whatever the metric equivalent is, screed with resin, lay new ply on top and weight down
as for leaving delamination alone, just dont, the glue fails and with the bouncy bouncing it will get a lot worse. it is a pain of a job but needs must
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12/4/2016 at 8:27pm
Location: SHROPSHIRE
Outfit: Avondale argente 530 5
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If you use one part resin then dont use dowels. They prevent the proper expansion of the resin so therefore it wont bond as well.
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