Cast iron pipe lining, or cured-in-place pipe (CIPP), is a felt tube soaked in resin that is pulled into the old drain and hardened in place. The liner becomes a smooth, jointless pipe inside the cast iron, so wastewater no longer touches the old metal. Liners used inside homes are certified under NSF/ANSI 14 to the performance requirements of ASTM F1216.
Lining works only when the old pipe still holds its shape, because the cast iron acts as the form while the liner cures. A camera inspection checks every section first. Collapsed sections, long holes in the pipe bottom and low spots that hold water are replaced with PVC instead.
Bradenton homes built from the 1950s to the 1970s have their main drain under a slab poured over sandy fill. Lining reaches that drain through the cleanout, so tile, terrazzo and cabinets stay in place. Most houses need 3 to 6 days.
Cast Iron Pipe Lining Services We Offer
Camera inspection
Recorded video of every section before any work.
Descaling
Chain knockers remove rust scale back to the pipe wall.
Liner install
Resin liner pulled in and cured in place.
Branch reinstatement
Branch openings cut back open after curing.
Camera proof
Second video run through the finished liner.