: Gerald: 6 yards... I am getting ready to order glass for an 18' x
: ~20"-something boat. I am figuring I am going to need at least 24
: yards of 38" wide cloth to do this boat inside and outside hull and
: deck. I was going to get 30 yards to have some extra for misc stuff. I'm
: thinking 6oz hull and deck, with 4oz overall inside. Is that about right?

You are gonna have a lot of extra cloth.

Why are you shopping for 38 inch fabric? Is that the only stuff available near you? I'd look for 45 inch or 54 inch fabric and order 3 times the length of the boat, plus 1 yard. For an 18 foot boat that would be 19 yards.

When you cut the fabric you'll be using football shaped pieces to cover the deck and the hull. When you cut those from the rectangular fabric you get lots of very large remnants. Use these to glass the inside of the deck and the inside of the hull. With careful cutting you should even have enough excess to cut bias strips for attaching the deck to the hull. Do a mock up with pages of newspaper taped together to form a long sheet as wide as the fabric you are considering purchasing. Drape this paper over your hull or deck and see what excess you have. You might even want to cut the paper to make a pattern which you can lay on your glass cloth so you cut it to size. Even after allowing for a few inches of overang on all sides, your "scrap" fabric is going to be extensive, and should be used on areas which are not easily seen, such as the underside of the deck or fore or aft of the cockpit.

Paper mockups are cheap and will save you a considerable amount of money on your glass cloth purchases.

PGJ