Ordering "git rot" for hull delamination, math problem

I have a '76 H16 and noticed the last time I went out that on each hull about 6-8 inches in front of the pylons were two soft spots. I have measured the total area of the combined soft spots to be roughly 88 inches ^2. My first assumption is that the thickness of the deck is about 1/2 inch. This would bring the total volume of the soft spots to around 88 in^3. I have searched this forum and it seems that git rot is the preferred epoxy for such repairs. The largest bottle from west marine is 34 oz and costs around $80. This 34 ounces should equal about 1,005.38 cm^3 if you assume 1 ml = 1 cc. I converted the total volume of the soft spot to be about 1,442 cm^3. So I would have to buy 2, 34 ounce cans but obviously the soft spots are not all void space that has to be filled in with epoxy. Can anyone guide me along with how much epoxy they used with a similar repair.

Best
Branson

_________________
War Damn Eagle
Branson

You're way overestimating the volume required.

Firstly, the laminate sandwich is only about 3/8" thick - and most of that is the foam core, which is mostly intact. The Git Rot only fills the void between the foam and the fiberglass laminate - which can vary from almost nothing to ~ 1/8". A more conservative estimate of the volume needed would be 88 in^2 x .0875" = 7.7 in^3 = 126 mL = 4.25 fluid ounces.

Buy two 4 oz bottles of Git Rot and you should be covered.

BTW, Jamestown Distributors has the 34 oz Git Rot kit for only $58.

MBounds,

Thanks, I figured I was overestimating the actual volume the epoxy will eventually occupy, but I did not know by how much. Thanks for the quick reply, combined with the smaller volume and Jamestown Distributors this will cost me a lot less than I originally thought. One last question, if I am correct in my research this stuff takes about 24 hrs to set up, how long till the repair is ready for moderate sailing conditions, say 10-15 kts?

Best
Branson

_________________
War Damn Eagle
Branson

According to the BoatLife (makers of Git Rot) website:

I think that answers your question.