If you just want to seal the area, your husband is correct.

If you want to strengthen and reinforce the area, you are correct that
the glass cloth is needed.

Jonathan

TEE wrote:
My husband is rebuilding the seats for our bayliner. He has made the seat
boxes and is ready for fiberglass. He has sealed the plywood with resin.
Now is where we differ in opinion. I say that glass needs to be laid
anywhere that two points of plywood come in contact, i.e. the corners
meeting and the top meeting the sides. I even thought that fiberglass tape
could be used in the hard to get areas. He says that just applying the
resin will seal these areas.
Does anyone have the knowledge to know which is the correct way?
Thanks for any help,,,,,Tee