Anyone ever make their own headliner?

[kaysboat]

My 1980 C10 is a stripper and initially didn't have a headliner. I happened to find all the parts and trim in a junk yard truck and some cloth/foam headliner material that is a dead match.

I recovered the stock headliner backer board twice now, but the foam stock backerboard keeps letting go within a couple weeks, and my headliner sags dramatically as a result.

I was thinking of making my own new backerboard out of something that will stand up better. I was thinking about fiberglassing oveer the existing backerboard and then scrapping the original away and recovering the "new" fiberglass board.

Anyone have any ideas of done anything like this? I don't want to pay the hundreds of dollars plus crazy shipping prices for a new ABS board from LMC or Classic truck parts.

Thanks.