[JPizzle]

Getting ready to glass in new casting decks. Do I need to put a finish over the fiberglass on the underside? I plan to use brushable gelcoat for the top sides but didn’t know if I needed to do all under sides also. It is foam core and polyester resin. Could paint if needed for an easier application.

 

[Clubhunter]

Do nothing on underside. You can on the underside of hatches

 

[DuckNut]

To clarify, apply your cloth to the foam core.

Painting or gelcoat is not necessary.

You need to scuff before attaching.

 

[JPizzle]

yes I laminated two layers of 1708 top and bottom already on the foam core panels. It would be easier to put a finish on the bottom before I glassed it down to the gunnels.

To clarify, apply your cloth to the foam core.

Painting or gelcoat is not necessary.

You need to scuff before attaching.

nated two

 

[DuckNut]

yes I laminated two layers of 1708 top and bottom already on the foam core panels. It would be easier to put a finish on the bottom before I glassed it down to the gunnels.

nated two

Yes, indeed, it would be easier. But not needed.

 

[Lowtidelowlife]

Yes. If using poly use a gelcoat for it to fully cure it needs zero exposure to oxygen. Or just use a couple coats of PVA which can be washed off at a later time. Water soluble.