Re: How Much Material does it take to cover 18x6
depends on the mat. This is from the stickey at the top of the restoration section..... it is a must read if you want to but never done fiberglass...
Fiberglass Information, and How much resin do I need?
Please remember several things: These are estimates not hard and fast rules. If you are laminating over wood, the raw wood will soak up some resin, which is good, but you will use more resin on the first layer. Thin resin goes farther than thick resin.
Chopped strand mat:
The general rule for chopped stand mat is 1.5 to two times the weight in resin to the weight of mat.
For 1.5 ounce chopped strand mat you will need 3 to 4 ounces per SQUARE FOOT.
For 2.0 ounce chopped strand mat you will need 4 to 5 ounces per SQUARE FOOT.
There are about 150 ounces or resin by weight per gallon. Example: 10 square yards of chopped strand mat is 90 square feet. 90 x 4 = 360 oz. 360 oz of mat divided by 150 oz per gallon gives you 2.4 gallons.
Material to approximate gallons of resin used.
1.5 OZ MAT = 1 gallon covers 4.2 square yds
2.0 OZ MAT = 1 gallon covers 3.4 square yds
Here is a helpful table for cloth:
There are about 150 ounces per gallon by weight
1.5 ounce cloth (cloth not chopped mat)?.1 gallon wets out 40 square yards
2.5 ounce cloth?.1 gallon wets out 25 square yards
4 ounce cloth??1 gallon wets out 15 square yards
6 ounce cloth??1 gallon wets out 10 square yards
10 ounce cloth?..1 gallon wets out 6.5 square yards
18 ounce woven roving ?1 gallon wets out 4.5 square yards
24 ounce woven roving ?1 gallon wets out 3.5 square yards.
Biaxial mat 1708.????.. 1 gallon wets out 4 square yards
