Washboard rebuild

[Capt.Frank]

I am getting ready to paint topside this year. Have removed all rodholders and old bilge vent. Want to reinforce gunnels, plan A is remove old ply and glass some 1208 or 1408 no sure what is. Then 1/2 coosa blue water 15 then another layer of glass then another layer of coosa and finial layer of glass with 2 more gunnel supports. Or glass 3/4 ply and glass? Trying to beef up gunnels they have taken a beating last 40 years.
There is only one support and I feel that's what gives it all the flex.

[CaptPatrick]

Frank,

After you rip out the old plywood, replace it with 3/4" or 1" Coosa Board and add a layer of 1208 or 1708 biaxle. If you can't obtain the Coosa Board, (or similar product), go ahead and use plywood, just make sure it's fully sealed out with epoxy.

[Capt.Frank]

Patrick, yes removing old ply some rot around rodholders. I have ply, coosa, glass and epoxy. Was wondering if the coosa will compress too much. Coosa a bunch more work is it worth it? Is one layer of glass enough?

[CaptPatrick]

Coosa would be less work from my view point and zero chance for future water damage. Bed it in with thickened epoxy and a single layer of glass should do it. Lap the glass onto both the hull and inside of gunnel, (in essence creating an box channel).

[Capt.Frank]

So just glass then coosa bedded in thickened epoxy. No need for more glass? More work was just because it 1/2 want 2 pices right?

[CaptPatrick]

Bed the Coosa to the underside of gunnel in thickened epoxy. Glass over the underside of Coosa on to hull and gunnel skirt...

Glue two pieces of 1/2" Coosa with a straight layer of epoxy and cut from now what is 1".

[Capt.Frank]

Thanks Patrick