Estimating materials???????

[Georgia Boy]

Anyone have a good way to estimate materials when laying glass? The mat and cloth is fairly simple, but I always seem to come up short or have way too much left over when it comes to resin. Is there a way to calculate it using the square footage of mat or cloth you will be using? Just found some floor problem's and got pissed, anyway a couple hours later, and cover it glass and wood scraps I have the old floor out and close to being ready to start putting the new one in. I am going Wednessday to buy some glass and resin. thanks for any help you guys can give. ~GB

[Racemore]

Depends on which coat,over bare wood 1 gal should wet out around 65sf of 1 1/2 oz mat,as a 2nd layer around 90.Don't know what kind of wood you are going to use but Lowes has a new plywood alot like the ac fir Superply that they quit carrying call Sand-e-ply.It is a dry wood,I put 1/2" down for my floor and rebuilt the seat frames.The grain turns up when resinated.Excellent adhesion quailty and has very little warp.:cool:

ps Try the Fiberglass forum.;)

[Techno]

Since cloth, mat and roving and all that should be saturated by a certain percentage you can use that and pad it a bit. Off the top of my head mat is something like 60%? and cloth around 45% resin by weight.
6 ounce cloth times the area times the percentage-.45 = say 3 ounces of resin weight, not volume. Convert it into volume.

[Hooty]

An ideal laminate is 50% glass, 50% resin. With cloth it's not too hard but mat and roving take some work (squeeging). Mat weight is the weight per sq. ft. (2 oz. mat weights 2 oz./sq.ft.). Cloth and roving weights are the weight per sq. yd..

c/6

Hooty

[Gordie Miller]

your all wrong, figure out how long you think it will take, how much it will cost, now TRIPLE both of those, you now have a reasonably accurate estimate.

[Hooty]

Gordie Miller wins tha seegar.

c/6

Hooty

[Scott]

The method I used, If I thought I needed two, I bought three! worked well most of the time!

Sorry GB:( Once the smart ass barrel is open.....