Plywood delamination

[Petercatterall]

The wheelhouse and cabin sides of my 1970s Colvic were looking rather tatty.
Ispection shows that in most cases the outer plyood laminate has become unstuck and wrinkled. I believe that I could remove these areas and simply paint the next layer( there is adaquate thickness left!) I guess that I could also glue on a new 1mm 'construction' veneer.
Any general advice would be apreciated. Are there specific recomendations about suitable adhesives for this, I would like to use some kind of use of contact adhesive as wieghting the job will be difficult.
Thanks


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[Captain Coochie]

I doubt that you would be able to get a flat enough surface to relaminate
Youll find in some places it is still bonded and youll tear into the other layers
much easier to remove the whole part clamp it onto a new sheet and with a router cutter with a flush bearing copy route it
itll be an exact copy and wont take long
and itll last another 30 odd years
Also if its delaminated the water has got behind it and rot could be setting in on the other layers
www.trendm.co.uk for the router cutters
Good luck

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[Blue_Blazes]

Chances are that if your delamination is extensive, someone has used crappy "exterior" grade plywood instead of pukka marine ply. If you can remove the part with reasonable ease you'd be better off replacing it as detailed by Seaspray 111. If you decide to re-laminate, make sure you remove the old glue layer along with the outer lamination. Then use cascamite or cascophen or whatever they are calling themselves now, rather than contact adhesive. Cut your veneer into manageable strips, glue them down and hold them temporarily with staples till the glue goes off. Pull out the staples, sand fill , and paint.

Hope this helps,

Bill.


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[oldsaltoz]

G'day Peter,

Another alternative, if you are confident the existing material is sound; you could remove the loose layer/s, sand the whole section, fill the low areas with epoxy resin and micro-balloons, then apply another 2 coats of epoxy sand and paint, should see the boat out.

Hope this helps

Andavagoodweelend Old salt Oz /forums/images/icons/cool.gif

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[Petercatterall]

Thanks guys, 3 good options for me to try. Possible that I may use al 3 on different areas.
I was suprised to see the delamination, the quality of the original build has been good I cannot see the (professional) builder using cheap ply. Staples...! why didnt I think of that !!

Thanks again

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