About to Fiberglass

[neauone]

I haven't purchased the fiberglass yet, but the interior is just about sanded and the next step would be to clean it.
What weight fiberglass would be acceptable and I'm leaning toward Selvage Tape.
Thoughts?

[David Tilston]

What are you fibreglassing?

[neauone]

Lets start with the new wood floor, so….from the floor to the walls of the Scamp.
Than where water damage entered the Scamp inside of the belly band.
I intend to use Bondo on the interior of the band, than fiberglass over it.

I removed all the old calking outside only to find cracks and holes, which I will be filling as well.

[neauone]

I will take some pics and post them so you can see what I am up against.

[stevebaz]

I would put down a layer of 4 inch wide tape and then a second layer of 6 inch wide tape to miniumize the hump. You could also use 2 layers of 4 Inch wide and offset the stack by an inch. Forget the bondo just take some of the glass tape and chop it up and mix with resin and use that for fill. It will be stronger and add structure. Bondo is for making pretty not for repair.

[David Tilston]

I use a bunch of small triangles of fibreglass when I am filling.

[Night Sailor]

There is a product commonly called Stitched Matt. It has another name that I can't remember. I buy it from Merton 'a Fiberglass in Massachusetts--Joe is close to me and far enough away to avoid sales tax. You can check out his products online and then try to find a source close to you.

You aways start with a layer if matt so by sewing that to a layer of biaxial cloth you get great adhesion and strength. I use a lot of it and it absorbs epoxy well. It is ideal for seams and wider material is available also. I use the 36" wide material with polyester resin for larger work-- covering a sheet of plywood for example--I would butt that instead of lapping it. That what I used I reinforce the deck of my 30' sloop after re-coring it. It saves a lot of time as two layers are done at once and that is often what you need.

It is important not to have sharp bends or folds. Corners need to be radiused, I agree with the other comment about using two pieces left. If you use the six-ish material and laugh at you have a very strong bond in a corner. Put a filet in the corner before laying up the tape.

If you have any questions, drop me a PM and I'll give you my number. I'code lots of this sort of work.

[Night Sailor]

Sorry can't fix the typos. I'm doing this through an iPhone I can't edit it through the mobile app. The worst was lapped not laughed.

[jeff sackett]

Don't use bondo on a seam or to seal a leak. Bondo isn't waterproof. Use something polyester based. Duraglass or tiger hair works well. It has chopped fiberglass in it and is waterproof. Hard to sand though so apply it as smooth as you can. Thirty five years in the body biz, lol. Regards, J.D.