There may be some fiberglass in the ceiling joist and some foam under the rubber.

We tend to go overboard on R-30 rolls of unfaced fiberglass insulation because it's incredibly cheap for the savings it offers.

Notice it is NOT fiberglass insulation. 

Spend a little on the fiberglass fishing rod and its doable.

The fiberglass tub has a crack in the floor.

Wondering if it's worth redoing a shower in subway tile or sticking with a fiberglass tub/shower combo.

I would recommend fiberglass doors over steel, they don't ding up up like the metal does.

FWIW I'm very good with wet sanding and refinishing fiberglass (mostly boats).

And one we replaced with a door that looks like wood but is either fiberglass or vinyl with a Styrofoam interior (cheaper than hardwood, better than hollow, and we were broke at the time).I got a text from a tenant (different place) once saying that the door was peeling and when I went out to fix it found that the previous owner had apparently patched a hole in the door with mesh and drywall mud, then just painted over it. 

About the property:Foreclosure: Bank Asking 86,900ARV: 105,000 (my calc giving the area and rental rates)Property Characteristics: SFH (ranch) 1970s, 2bed, 1bath, 1274 sqft, wood paneling throughoutRehab Budget: $48,000 (reconfig to: 3bed, 1.5bath [fiberglass insert], rewire, fixtures, outlets, kitchen [laminate counters])The BRRRR Calculator is telling me the ARV is $50,250 (still would like to know how this calculated).