If you use automotive dam, window dam, o-rings, washers or the like to
provide a little separation between the window and the hull (and you
should), it might be worth calculating the amount of goop you're going to
need. Do it beforehand, although it's more entertaining to do it after the
fact.

One tube of window caulk, of the type I bought, for example, has a volume of
88 milliliters, or 3 US fluid ounces. That works out to 5.37 cubic inches -
and now, using that relationship, one can figure out how much stuff to buy,
even if your caulk comes in different sized tubes.

Remember that you won't be able to use the whole tube - there's usually some
wastage, and you've got to allow for that, too.

Number of tubes = (Perimeter length * thickness * width of the sealant) /
(5.37 cubic inches * 80%)

In the above equation I assumed that we'd only be able to get 80% of the
sealant out of the tube. 80% is the same as 0.8 in the equation. Also, I
figured that you'd buy the same stuff I used. If not, then just adjust the
numbers accordingly.

Dave Paule
F-27 Second Chance


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