| Top Left: Underground pipe shown wrapped in wax
coated corrugated paper prior to pouring of perlite concrete insulation.
Top Right: Pipe elbows
shown wrapped in double wraps of foil faced fiberglass insulation. Straight lengths
of wax coated corrugated cardboard piping are show at right of photo.
Bottom Left: Expansion
loop wrapped in double layers of foil faced fiberglass prior to pouring of perlite
insulating concrete.
Bottom Right: Expansion
loop following pouring of perlite insulating concrete prior to overwrapping with PVC
membrane. |
