How many gallons of resin?

evan420g

Cadet
Joined
Oct 13, 2020
Messages
6
This is a 19 foot boat with a 10 foot long by 6 foot deck. I plan on putting down 3/4 ply with 1 layer of csm and one layer of 1708 ontop, and 1 layer of csm on bottom. How much polyester laminating resin should this take?










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froggy1150

Senior Chief Petty Officer
Joined
Nov 3, 2017
Messages
796
My 21 foot cuddy took about 35 gal to do transom,stringers,motor mounts, floor and sime little things. I did wrap all the stringers and transom before installing though
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
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Jul 23, 2011
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47,309
the last thing to rot in a boat is the floor, the first thing is the transom and stringers. from the looks of the pic, you are not done with demolition.

for a 19' boat, minimum amount of resin for transom stringers and floor would be in the 15-20 gallon range.
 

KJM

Lieutenant Junior Grade
Joined
Jul 31, 2016
Messages
1,186
The floor alone would probably get done with about 3 gallons, maybe a bit more. But like was already said, keep digging, you will likely find more rot. I'm on my third 5 gallon bucket of polyester resin now and have the transom done, stringers done and floor 1/2 done. I figure i'll need a forth bucket before i'm all done things above the floor. Same size boat roughly as yours.
 

Reserector_

Chief Petty Officer" & 2021 Splash of the Year Win
Joined
Oct 15, 2019
Messages
592
I did a 17' ski boat complete with 12 gallons. I took the time to hard roller the air out and keep the layers compressed as I wetted it out. Lighter and stronger if you put in the effort. If you just saturate it, you will need a good bit more.
Floor alone will take 3 to 4 gallons with the layup schedule you described.
 

kcassells

Fleet Admiral
Joined
Oct 16, 2012
Messages
8,578
1 GALLON OF RESIN COVERS 1608 SQUARE FEET PER 1 MIL OR 0.001 INCH CURED COATING THICKNESS ON A SMOOTH AND NONE ABSORBENT SUBSTRATE (A PANE OF GLASS FOR EXAMPLE) (LENGTH X WIDTH X COATING THICKNESS)/ 231 CUBIC INCHES PER GALLON = CUBIC INCHES OF COATING NEED 50 INCHES X 36 INCHES X 0.010 (10 MILS) = 18 CUBIC INCHES
Conversion Table - The Epoxy Experts

theepoxyexperts.com/conversion-table/
theepoxyexperts.com/conversion-table/
 

jbcurt00

Moderator
Staff member
Joined
Oct 25, 2011
Messages
24,829
Rough guide for Polyester resin, 1.5oz CSM & 1708 are the recommended weights
1 Gallon of Resin Wets Out
MaterialsSq. Ft.
.75oz Mat64 SF
1.50oz Mat32 SF
3.50oz Cloth150 SF
6.00oz Cloth90 SF
10.00oz Cloth60 SF
13.00oz Unidirectional26 SF
1708 Biaxial27 SF
18.00oz Worven Roving40 SF
1808 Biaxial26 SF
24.00oz Worven Roving32 SF
2415 Bi-Ply16 SF
(50″ wide material = approx.. 12 square foot per linear yard)
 

Timecore

Recruit
Joined
May 9, 2020
Messages
4
Ok for those on the other side of the pond in OZ we work to 1mtr is 1 ltr on csm
just some useless info for ya
 
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