Delamination

[aod]

Has anyone any ideas about how to repair areas of delamination. I have some in the hull which is solid laminate but in the problem areas this is only 5mm thick. I want to repair it from the inside but am not sure about how to scrape/chisel/grind away the delaminated layers without punching straight through the hull. Any ideas, book suggestions or practical offers (for the appropriate level of remuneration) would be most welcome.

(the boat is at Gosport)

Richard

<hr width=100% size=1>

 

[sailorman]

how large is the area concerned

<hr width=100% size=1>

 

[oldsaltoz]

G'day Richard,

If you have full access to the area from inside its not a biggie, but will be dusty. Start by removing as kit as you can from inside, cover whatever is left.

Start with an angle grinder and an 80 grit flap sanding wheel, just take a small amount off in an area you are sure is delaminated (Tapping hull will show you).

As the grind look for an edge or line, then only grind off material outside this line, keep going till the edge or line disappears and continue at the same depth of at least another couple of inches to make sure you get it all.

Clean down with acetone and apply epoxy resin and cloth designed for use with epoxy, not chopped strand, it will hold too much resin and weaken the hull.

If it needs to be very waterproof, i.e., extends into or close to the bottom and may get wet when heeled over, apply 3 coats of resin over the top.

Then a coat of paint to protect it from UV light.

Hope this helps...



<hr width=100% size=1> Old Salt Oz /forums/images/icons/cool.gif Growing old is unavoidable. However, growing up is still optional.

 

[sailorman]

before u do anything it may be prudent to fill & fair the exterior area & take a "moulding" .
then carry out the internal works,if you end up with a hole to the outside world u have the mould ready to rectify the problem.
take care!.


<hr width=100% size=1>