Hey john looking at the picture it looks like it s was made with chopped strand mat and polyester resin.
Thinned epoxy for recovering fiberglass mat strands.
It can be used with epoxy polyester or vinyl ester resin including west systems epoxy.
The fiberglass provides durability and strength.
Four or five layers of 1 5 oz chopped stand mat and orca 200 p16 laminating resin will work great.
You can use the same to repair it.
Choosing the right fiberglass mat.
The mat is made of high quality e glass strands.
In certain repairs you will need some type of reinforcement to the repair area.
Premium fiberglass mat this fiberglass chopped strand mat is marine grade and suitable for boat building and repairs roofing pond lining and many other applications.
This chopped strand mat has a good wet out.
It does get put into suspension and is sealed in the cured epoxy this undissolved binder causes the wet out mat to remain a bit stiff compared to wet out with a styrene based resin.
Epoxy resin varies from brand to brand but on average there is a 35 decrease in its strength properties of the epoxy for ever 5 of thinner added.
By the most possible and the most used method for thinning epoxy.
But also the most harmful.
Epoxy resin is a very strong material that can be used as a sealant and an adhesive as well as a myriad of other things however one troublesome thing about this substance is that it is very thick and viscous which means that it can be hard to apply and sometimes it will not get into all of the dings and nicks in a surface.
Apply some clear packing tape over the back of the hole to have something to lay up against.