Glacier Boats of Alaska - Builder's Forums

Great Alaskan and Boat Building => Boat Building Materials => Topic started by: sprig1 on January 05, 2022, 03:53:12 PM

Title: Old fiberglass mat
Post by: sprig1 on January 05, 2022, 03:53:12 PM
  I have read that old fiberglass mat and tape is not as strong as new. Someone is giving me some old clean on a roll fiberglass mat and tape. I would guess it only degrades to a point. It sure would be nice to use it. Iím acquiring things to get started building. Thanks
Title: Re: Old fiberglass mat
Post by: Brian.Dixon on January 05, 2022, 07:54:21 PM

Glass does not degrade, even in UV.  Dirt, grease, dust, and other contaminates can, however, result in a poor bond.  The only failure I've ever seen was fiberglass applied to dusty wood.

Title: Re: Old fiberglass mat
Post by: sprig1 on January 05, 2022, 08:52:43 PM
 Thanks Brian. Figures were I read it was building airplanes out of epoxy. All the fiberglass I ever used you couldnít seem to destroy it.
Title: Re: Old fiberglass mat
Post by: Brian.Dixon on January 05, 2022, 10:04:00 PM
Thanks Brian. Figures were I read it was building airplanes out of epoxy. All the fiberglass I ever used you couldnít seem to destroy it.

It's silicon dioxide ... pretty bullet proof, inert, stuff :)